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.
49 published articles

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.
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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.