M

Muthu

Founder, sole writer & editor of Techpulzo

I'm Muthu, a software engineer based in India who writes about technology, career growth, and personal finance on the side. I started Techpulzo because most content in these spaces online is either too shallow to be useful or too jargon-heavy to actually help you decide anything — so every article here starts from a real question I'd want answered myself, and tries to show the actual numbers and trade-offs instead of surface-level advice.

Writes from hands-on use and day-to-day work as a software developer. See our editorial policyfor what that does and doesn't qualify him to write about.

49 published articles

Wired vs Wireless Earbuds: What You Give Up With Each
Buying Guides#audio#gadgets

Wired vs Wireless Earbuds: What You Give Up With Each

Every format has a real cost, latency, audio compression, or battery anxiety, and it does not disappear just because a brand solved one of them

Wireless did not fix every problem wired earbuds had, it traded them for new ones. Here is what you actually lose with each format.

5 min27
28 September 2026
Power Bank Buying Guide: What the mAh Number Does Not Tell You
Buying Guides#gadgets#buying-guide

Power Bank Buying Guide: What the mAh Number Does Not Tell You

The capacity printed on the box is not the capacity you get out of the USB port, and the gap is bigger than most buyers realize

A 10000mAh power bank does not give your phone 10000mAh of charge. Here is why, and what to actually check before buying one.

5 min26
28 September 2026
Smartwatch Buying Guide: Which Features Are Worth Paying Extra For
Buying Guides#gadgets#buying-guide

Smartwatch Buying Guide: Which Features Are Worth Paying Extra For

Some premium smartwatch features change daily usability, others are marketing checkboxes that rarely get used after the first week

A practical breakdown of which smartwatch features, GPS, cellular, ECG, actually change day-to-day usability enough to justify the extra cost.

5 min30
27 September 2026
Chrome vs Firefox vs Edge: Does Your Browser Choice Matter?
Buying Guides#privacy#software

Chrome vs Firefox vs Edge: Does Your Browser Choice Matter?

Page rendering is nearly identical across all three now — the real differences are memory habits, privacy defaults, and ecosystem lock-in.

Most browsers load pages the same way now; the differences that actually matter are RAM use, privacy defaults, and cross-device sync.

5 min36
26 September 2026
Prepaid vs Postpaid Mobile Plans: Which Costs Less Over a Year
Buying Guides#money#telecom

Prepaid vs Postpaid Mobile Plans: Which Costs Less Over a Year

The honest comparison depends less on the sticker price and more on discipline, family sharing, and how you actually use data

Prepaid usually wins on raw cost, but postpaid can come out ahead for families and heavy data users once you factor in the full picture.

4 min44
25 September 2026
SSD vs HDD for a Budget Laptop: Where Your Money Should Go
Buying Guides#hardware#buying-guide

SSD vs HDD for a Budget Laptop: Where Your Money Should Go

On a tight budget, storage type changes how a laptop feels to use every single day far more than storage size does

On a budget laptop, prioritizing an SSD over extra HDD storage or a slightly faster CPU makes the biggest difference to how the machine actually feels.

6 min34
25 September 2026
RO vs UV Water Purifier: Which Type Suits Your Water Supply
Buying Guides#buying-guide#home

RO vs UV Water Purifier: Which Type Suits Your Water Supply

The right choice depends on your water source, not on which one sounds more advanced.

RO and UV purifiers solve different water problems. Picking based on your actual water source matters more than picking the pricier tech.

5 min37
24 September 2026
Inverter vs UPS for Home Power Backup: Which One You Need
Buying Guides#electronics#power backup

Inverter vs UPS for Home Power Backup: Which One You Need

They solve different problems, and picking the wrong one wastes money either way.

Inverters and UPS units both store and supply backup power, but they're built for different situations and switch over differently.

5 min42
24 September 2026
How to Get a Duplicate PAN Card Online
Finance#government#documents

How to Get a Duplicate PAN Card Online

Reprinting a lost or damaged PAN through NSDL or UTIITSL without changing your existing PAN number.

How to reprint a lost or damaged PAN card online, what it costs, and how to get an instant e-PAN as a stopgap while you wait.

5 min50
23 September 2026
How UPI Fraud Happens: Five Warning Signs to Watch For
Finance#money#fraud

How UPI Fraud Happens: Five Warning Signs to Watch For

Why receiving money on UPI can never ask you to enter your PIN, and the five patterns fraud actually follows

The actual mechanics of UPI fraud, fake collect requests, screen-sharing apps, QR scams, and five concrete warning signs to check for.

5 min50
22 September 2026
How Cashback Apps Make Money (and What It Costs You)
Finance#money#apps

How Cashback Apps Make Money (and What It Costs You)

Cashback isn't charity — it's a cut of an affiliate commission, and the business model shapes what deals it actually shows you.

Cashback apps aren't charity — here's the affiliate commission, breakage, and float that actually fund your cashback.

5 min42
22 September 2026
Credit Card vs Debit Card for Everyday Spending: Which Saves You More
Finance#money#banking

Credit Card vs Debit Card for Everyday Spending: Which Saves You More

The float period matters more than the rewards program — but only if you can reliably pay the full bill.

The float period beats rewards as the real financial edge of a credit card — but only if you clear the bill in full every month.

5 min40
21 September 2026
How Much of Your Salary Should Go to Rent in India
Finance#salary#money

How Much of Your Salary Should Go to Rent in India

The 30% rule ignores take-home pay, HRA tax exemption, and commute cost — here's how to work out your own number.

The 30% rent rule ignores HRA tax exemption and take-home pay — here's how to actually size your rent budget.

5 min36
21 September 2026
Fixed Deposit vs Recurring Deposit: How the Returns Differ
Finance#money#savings

Fixed Deposit vs Recurring Deposit: How the Returns Differ

The same quoted interest rate doesn't mean the same actual return — the way money accumulates changes the math.

FD and RD can quote the same rate and still earn different returns — here's the real math and when to use each.

5 min41
19 September 2026
How Often to Clean Your Laptop Fans (and How to Do It Safely)
Tech#how-to#maintenance

How Often to Clean Your Laptop Fans (and How to Do It Safely)

The signs that tell you it's overdue, and how to do it without opening the whole machine.

Dust buildup is the single most common reason laptops slow down and run hot over time. Here's a realistic cleaning schedule.

5 min51
17 September 2026
How to Set Up a Home Wi-Fi Guest Network, and Why You Should
Tech#security#wifi

How to Set Up a Home Wi-Fi Guest Network, and Why You Should

Keeping visitors, smart devices, and your main network on separate footing.

A guest network takes minutes to set up and keeps your main devices and data separate from anyone or anything you don't fully trust.

8 min60
17 September 2026
How to Set Up a Password Manager in 15 Minutes
Tech#tools#security

How to Set Up a Password Manager in 15 Minutes

A concrete step-by-step setup, not just "you should use one"

A step-by-step 15-minute setup for a password manager: install, master password, import, autofill, and fixing your worst reused passwords first.

6 min57
16 September 2026
How to Turn Off Ads in Free Android Apps — What Is Legal and What Is Not
Tech#android#privacy

How to Turn Off Ads in Free Android Apps — What Is Legal and What Is Not

Paying for an ad-free tier or using network-level blocking is fine; installing a cracked APK that strips ads out of the app itself is not, and carries real risk.

Removing ads through official IAPs or network-level tools is fine — patched or cracked APKs that strip ads violate copyright and carry real malware risk.

5 min68
15 September 2026
How to Stop Spam Calls and SMS on an Indian SIM: Settings That Help
Tech#india#privacy

How to Stop Spam Calls and SMS on an Indian SIM: Settings That Help

Between TRAI's DND registry, carrier-side spam AI, and phone-level filters, most spam is blockable with settings you already have — you just haven't turned them on.

TRAI's DND registry, carrier spam detection, and Android's built-in filters together cut most spam — here's how to actually configure each one.

5 min78
15 September 2026
How to Set Up Parental Controls Without Making a Teenager Furious
Tech#privacy#phones

How to Set Up Parental Controls Without Making a Teenager Furious

The tools are the easy part — whether a teenager experiences them as a negotiated boundary or an ambush decides if they actually hold.

Family Link, Screen Time, and router controls only work long-term if they're set up with a teenager, not announced to them afterward.

7 min63
14 September 2026
How Much RAM You Need in a Laptop in 2026
Tech#hardware#buying-guide

How Much RAM You Need in a Laptop in 2026

Browser tabs and background apps have quietly pushed the comfortable baseline higher than most buying guides admit

8GB is the bare minimum today, not the comfortable choice. Here is how much RAM different real-world usage patterns actually need in 2026.

5 min66
13 September 2026
Why You Should Not Reuse Passwords: What Happens When One Site Gets Breached
Tech#security#privacy

Why You Should Not Reuse Passwords: What Happens When One Site Gets Breached

The mechanical chain from one leaked database to your other accounts, explained step by step

How credential stuffing actually turns one breached, reused password into access to your other accounts, and how to break the chain.

5 min79
13 September 2026
What a VPN Protects You From, and What It Doesn't
Tech#security#privacy

What a VPN Protects You From, and What It Doesn't

The encrypted tunnel explained honestly, including the part where you're just trusting a different company instead of your ISP

What a VPN's encrypted tunnel genuinely blocks versus the common claims (anonymity, malware protection, total privacy) it doesn't deliver.

5 min78
10 September 2026
What End-to-End Encryption Means for the Apps You Use Daily
Tech#privacy#encryption

What End-to-End Encryption Means for the Apps You Use Daily

Why E2EE protects message content but not who you talked to, when, or how often

How end-to-end encryption actually works, what it hides from the app provider, and the metadata and backup gaps most people don't realize exist.

6 min93
10 September 2026
How to Read a Loan APR Instead of Just the EMI
Finance#money#banking

How to Read a Loan APR Instead of Just the EMI

Two loan offers can show the same EMI and still cost tens of thousands of rupees apart. Here is how to see it before you sign.

The EMI tells you what fits your budget, not what the loan costs. How flat vs reducing rates and fees hide inside a loan, with worked numbers, and how to use the RBI Key Facts Statement.

7 min126
30 August 2026
How to Learn Python in 30 Days — A Day-by-Day Beginner Roadmap
Tech#python#coding

How to Learn Python in 30 Days — A Day-by-Day Beginner Roadmap

A day-by-day Python roadmap for complete beginners: verified code you can run every week, three real projects, and an honest answer to what 30 days can and can’t get you.

14 min171
29 August 2026
Google Search Console for Beginners: How to Add Your Site and Read the Reports
Tech#beginners#seo

Google Search Console for Beginners: How to Add Your Site and Read the Reports

Setting it up takes ten minutes. Understanding what each report is actually telling you is the part most guides skip.

Search Console does not bring you traffic, it shows you what Google already thinks of your pages. Here is how to add and verify your site, submit a sitemap, and read the Performance and Pages reports without misleading yourself.

7 min164
29 August 2026
Best Time of Year to Buy Electronics in India: What the Sales Calendar Shows
Buying Guides#money#shopping

Best Time of Year to Buy Electronics in India: What the Sales Calendar Shows

The deepest discounts cluster around a few predictable windows, and buying right before a launch event usually costs you money

Indian electronics prices follow a predictable annual pattern around a handful of sale events. Here is how to time a purchase around it.

5 min149
20 August 2026
Buy Now Pay Later in India: The Costs Hidden in the Fine Print
Finance#money#credit

Buy Now Pay Later in India: The Costs Hidden in the Fine Print

The interest really is zero if you pay on time — the actual cost hides in flat late fees and credit bureau reporting instead.

BNPL's real cost isn't the advertised 0% interest — it's the flat late fees and credit score impact the fine print skips.

5 min132
20 August 2026
How to Turn a Spreadsheet Into a Simple Budget Tracker
Finance#productivity#money

How to Turn a Spreadsheet Into a Simple Budget Tracker

Three columns, one dropdown, and a SUMIF formula do more than most budgeting apps that get uninstalled by week three.

A budget tracker that survives past week two needs to be fast to enter and automatic to summarize — here's the minimal structure that works.

5 min54
17 August 2026
How to Use Google Alerts to Track Anything Automatically
Tech#productivity#internet

How to Use Google Alerts to Track Anything Automatically

It's a saved search that emails you, and the setup screen most people skip is where all the useful filtering lives.

Google Alerts is free and genuinely set-and-forget once you write a proper query and adjust the options most people never open.

5 min57
16 August 2026
Notion vs Google Docs vs Obsidian: What Each One Is Built For
Buying Guides#productivity#software

Notion vs Google Docs vs Obsidian: What Each One Is Built For

One stores documents, the other stores a database wearing a document's clothes.

Docs is faster for anything meant to be finished and shared; Notion earns its setup time for anything meant to be maintained and filtered.

7 min86
15 August 2026
Google Sheets vs Excel — Which One Fits How You Work
Buying Guides#productivity#software

Google Sheets vs Excel — Which One Fits How You Work

The decision isn't features, it's who touches your file and where.

Sheets and Excel overlap on most formulas — the real split is collaboration, offline reliability, and how large your data gets.

7 min76
13 August 2026
Why Video Calls Lag Even With Fast Internet
Tech#internet#networking

Why Video Calls Lag Even With Fast Internet

Bandwidth and lag are two different problems, and a fast connection only fixes one of them

Video call lag usually isn't a bandwidth problem at all — it's latency, jitter, and packet loss, three separate issues a fast connection doesn't automatically fix.

6 min102
11 August 2026
How Your Phone's Fast Charging Works, and Why It Slows Down Near 80 Percent
Tech#smartphones#hardware

How Your Phone's Fast Charging Works, and Why It Slows Down Near 80 Percent

The battery isn't slowing down because it's nearly full — it's slowing down to stop lithium from plating itself onto the electrode

Fast charging isn't one constant speed — it's a deliberately shrinking current curve, and the slowdown past 80% is chemistry protecting the battery, not a software limit.

6 min127
7 August 2026
How to Choose Budget Wireless Earbuds Under ₹2,000: What to Check
Buying Guides#buying-guide#audio

How to Choose Budget Wireless Earbuds Under ₹2,000: What to Check

Most spec sheets highlight the wrong numbers. Here's what to actually check before buying

Battery life on the box and battery life in daily use are two different numbers. A practical checklist for choosing budget wireless earbuds, focused on what actually affects day-to-day use.

8 min99
1 August 2026
SIP vs Lump Sum: How to Decide Where to Put Your Money
Finance#personal-finance#money

SIP vs Lump Sum: How to Decide Where to Put Your Money

The honest answer depends on where the money is coming from, not on which one 'wins' historically

SIP vs lump sum isn't really a contest with a universal winner — it depends on whether the money already exists or is still coming in. A practical framework for deciding, with the trade-offs made explicit.

7 min86
30 July 2026
How Two-Factor Authentication Stops Common Account Hacks — and Which Method Is Safest
Tech#security#authentication

How Two-Factor Authentication Stops Common Account Hacks — and Which Method Is Safest

It takes about 10 minutes to set up and blocks the single most common way accounts actually get broken into

A stolen password alone shouldn't be enough to get into your accounts. What 2FA actually protects against, which method to pick, and how to turn it on where it matters most.

7 min130
21 July 2026
Buying vs Leasing a Car in India — The Math Most People Get Wrong
Finance#finance#money

Buying vs Leasing a Car in India — The Math Most People Get Wrong

Why the monthly payment is the least useful number for comparing the two

A lease payment looks cheaper than a loan EMI for a reason that has nothing to do with which one costs less. Here's the real total-cost comparison, including the fees both options hide.

6 min358
18 July 2026
Why "Just Learn to Code" Doesn't Get Freshers Hired in 2026
Tech#career#job-search

Why "Just Learn to Code" Doesn't Get Freshers Hired in 2026

The bar moved when AI assistants started handling the work that used to prove basic competence

AI coding assistants now handle much of what used to prove a junior developer's basic competence. The actual differentiator in 2026 is judgment and debugging, not syntax fluency — here's what that means for how you prepare.

5 min289
18 July 2026
Why Your Phone Battery Degrades Over Time, and How to Slow It Down
Tech#tech#phone

Why Your Phone Battery Degrades Over Time, and How to Slow It Down

What's actually happening inside the battery, and what genuinely slows it down

Battery degradation isn't vague "wear and tear" — it's a specific, well-understood chemical process driven mainly by heat and time spent at extreme charge levels. Here's the real mechanism and what helps.

8 min175
18 July 2026
How Much Home Loan You Can Afford — The Math Banks Don't Show You
Finance#finance#money

How Much Home Loan You Can Afford — The Math Banks Don't Show You

What a bank will approve and what actually leaves you financially comfortable are two different numbers

Banks will approve an EMI that eats half your take-home pay. That doesn't mean you should take it. Here's the real affordability math, the hidden first-year costs, and how to stress-test the decision.

6 min168
18 July 2026
Is an MBA Worth It in India? Costs, Salaries and Payback Time
Finance#career#salary

Is an MBA Worth It in India? Costs, Salaries and Payback Time

The break-even calculation that matters more than the generic yes-or-no answer

"Is an MBA worth it" is really three separate questions: is this specific college's placement data strong, does the switch require the credential, and can you afford the real cost. Here's how to run the numbers.

6 min172
18 July 2026
Why Your Wi-Fi Feels Slow in Certain Rooms — Router Placement and How to Extend Range
Tech#tech#tools

Why Your Wi-Fi Feels Slow in Certain Rooms — Router Placement and How to Extend Range

It's not your internet plan — it's brick, metal, and water fighting a radio signal

Wi-Fi dead zones aren't random — they're radio waves losing a fight against brick, metal, and water. The actual physics behind router placement, and the fixes that follow from it.

8 min226
18 July 2026
Credit Score in India: How It Works and How to Fix a Bad One
Finance#finance#money

Credit Score in India: How It Works and How to Fix a Bad One

What actually moves the number, and the realistic timeline for recovering from a damaged score

Your credit score comes down to two things: do you pay on time, and how much of your available credit are you using. Here's exactly how each factor is weighted, and how to recover from a bad score.

8 min280
18 July 2026
Google Drive vs OneDrive vs iCloud in 2026 — Which Cloud Storage Fits You
Tech#tech#tools

Google Drive vs OneDrive vs iCloud in 2026 — Which Cloud Storage Fits You

What each one is genuinely built for, and where each one falls apart outside its own ecosystem

Google Drive, OneDrive, and iCloud aren't interchangeable — each is built around a specific ecosystem. Here's which one fits your setup, and how to avoid paying for storage you don't need.

7 min108
18 July 2026
Voice Access: How to Control Your Android Phone Using Just Your Voice
Tech#voice#voice-access

Voice Access: How to Control Your Android Phone Using Just Your Voice

Free, official, and takes about two minutes to set up

Voice Access is Google's free app for controlling your Android phone entirely by voice — open apps, scroll, tap, and type hands-free. Here's the full setup guide.

6 min355
8 July 2026
Zero-Based Budgeting: A Practical Guide to Giving Every Rupee a Job
Finance#budgeting#personal-finance

Zero-Based Budgeting: A Practical Guide to Giving Every Rupee a Job

The budgeting method that forces you to plan discretionary spending before you make it

Zero-based budgeting assigns every rupee of income a job before the month starts. A step-by-step method for setting one up, with a worked example.

7 min155
8 July 2026
Best Budget Smartphones Under ₹15,000 in 2026 — Complete Buying Guide
Tech#phone#redmi

Best Budget Smartphones Under ₹15,000 in 2026 — Complete Buying Guide

Poco M7 Pro 5G vs Realme P4 Lite 5G vs Samsung Galaxy M17 5G, compared on what actually matters (August 2026)

We compared the Poco M7 Pro 5G, Realme P4 Lite 5G, and Samsung Galaxy M17 5G on display, camera, battery, and software support -- current models and prices as of August 2026, with our take on which to pick.

7 min438
28 June 2026