One app. 88 utilities. Built for how people in India actually work — loan EMIs at the bank, GST at the shop counter, UPI QR on a laminated standee, emergency numbers on a highway at night.
Desi Tools bundles finance, tax, math, converters, payments, social selling helpers, document utilities, and emergency locators into a single offline-first app. No signup. No interrupting ads. Free on Google Play and the App Store.
This is the complete guide to every category and what each tool does — with links to web pages and deeper blog posts where we have them.
Why one app instead of eighty-eight
Every utility app on the Play Store wants permissions, notifications, and ad screen time. Install twelve single-purpose apps and your phone becomes a billboard.
Desi Tools groups related tools with consistent design, Indian defaults (lakh, crore, GST splits, land units), and shared privacy principles: calculations on device, no login required.
Download Desi Tools or browse the full tools directory.
Finance and Loans (12 tools)
Money decisions start here.
| Tool | What it does |
|---|---|
| EMI Calculator | Home, car, and personal loan monthly installment |
| SIP Calculator | Mutual fund SIP returns projection |
| Lumpsum vs SIP | Compare one-time vs monthly investing |
| Loan Prepayment | Impact of lump-sum principal payment |
| Loan Eligibility | Estimate loan amount from income |
| Compound Interest | Growth with compounding |
| FD Calculator | Fixed deposit maturity |
| RD Calculator | Recurring deposit maturity |
| PPF Calculator | Public Provident Fund projection |
| Moratorium Impact | EMI pause effect on interest |
| Rent vs Buy | Housing cost comparison |
| Inflation Calculator | Purchasing power over time |
Deep dive: How to calculate EMI for home and car loans
Tax and Statutory (10 tools)
For shopkeepers, freelancers, and salaried taxpayers.
| Tool | What it does |
|---|---|
| GST Calculator | CGST, SGST, IGST add/remove |
| GSTIN Validator | Format and checksum check |
| HSN Code Lookup | Product classification reference |
| Income Tax Calculator | Old vs new regime estimate |
| PF / EPF Calculator | Provident fund accumulation |
| HRA Exemption | House rent allowance tax benefit |
| Gratuity Calculator | Retirement gratuity estimate |
| NPS Calculator | National Pension System projection |
| Professional Tax | State professional tax reference |
| TDS Estimator | Tax deducted at source estimate |
Deep dives:
Calculators (7 tools)
Everyday math without opening a spreadsheet.
| Tool | What it does |
|---|---|
| Age Calculator | Exact age from date of birth |
| Percentage Calculator | Marks, tips, changes |
| Discount Calculator | Sale price from MRP |
| Margin / Markup | Retail pricing profit |
| Product Price Estimator | Cost, margin, GST, selling price |
| Split Bill | Divide expenses among friends |
| Number to Words | Cheque and invoice amounts in words |
Deep dive: Best offline calculator apps for India
Health Tools (3 tools)
Fitness and nutrition helpers.
| Tool | What it does |
|---|---|
| BMI Calculator | Body mass index |
| BMR Calculator | Basal metabolic rate |
| Protein & Diet Planner | Indian veg/non-veg protein targets |
Converters (8 tools)
Units India actually uses.
| Tool | What it does |
|---|---|
| Unit Converter | Length, weight, temperature |
| Area Converter | Sq ft, sq m, acre |
| Land Units India | Bigha, guntha, regional measures |
| Currency Converter | Live FX rates (needs internet) |
| Fuel Efficiency | km/l, mileage conversion |
| Time Zone Converter | IST and global zones |
| Roman Numerals | Number ↔ Roman |
| Data Size Converter | KB, MB, GB |
QR and UPI (6 tools)
Accept and share payments.
| Tool | What it does |
|---|---|
| QR Generator | Text and URL QR codes |
| UPI QR Generator | Shop payment QR |
| Bharat Payment QR | Bharat QR standard |
| QR Scanner | Scan codes (camera) |
| UPI Payment Link | Shareable pay link |
| IFSC Finder | Bank branch IFSC (internet) |
Deep dive: How to create a UPI QR code for your shop
WhatsApp (4 tools)
Sell and support on India’s favourite messenger.
| Tool | What it does |
|---|---|
| Click to Chat | Open WhatsApp without saving number |
| wa.me Link Builder | Custom WhatsApp links |
| Business Catalog Link | Catalog deep links |
| SMS / Email Templates | Ready message formats |
Instagram (2 tools)
Content helpers for creators and small brands.
| Tool | What it does |
|---|---|
| Caption Generator | Post and reel caption ideas |
| Hashtag Generator | Hashtag sets by topic |
Everyday India (11 tools)
Daily life in Indian cities and towns.
| Tool | What it does |
|---|---|
| Fuel Cost Calculator | Trip fuel expense |
| Mileage / Average | km per litre from trip data |
| Fuel Price Reference | City fuel price reference |
| Electricity Bill Estimator | Units to bill estimate |
| Pincode Lookup | Postal pincode search (internet) |
| PAN Validator | PAN format check |
| Indian Festivals & Holidays | Gazetted and festival calendar |
| Gold / Silver Rate | Live rates (internet) |
| Toll Estimator | Highway toll estimate |
| Kya Karu? | Random decision picker |
| Local Reminders | On-device reminders |
Documents and Dev (9 tools)
Files, security, and text for paperwork and side projects.
| Tool | What it does |
|---|---|
| Image Convert & Compress | JPG, PNG, WebP resize |
| Passport Photo Guide | Size and framing reference |
| Aadhaar / PAN Mask | Redact ID numbers in images |
| PDF Merge | Combine PDF files |
| PDF Split | Split PDF pages |
| Password Generator | Strong random passwords |
| Hash Generator | MD5, SHA hashes |
| JSON Formatter | Pretty-print JSON |
| Text Tools | Case, word count, utilities |
Emergency Locators (16 tools)
Reference when seconds count — always call 112 in active emergencies.
| Tool | What it does |
|---|---|
| Govt Helplines | Toll-free government numbers |
| Ambulance Numbers | 108 and EMS contacts |
| Police Stations | Thana directory reference |
| Fire Brigades | Fire station listing |
| Highway Accident Helplines | NH and state highway help |
| Govt Hospitals | Public hospital directory |
| Blood Banks | Blood bank references |
| Food Banks | Hunger relief contacts |
| Municipalities | Urban local body refs |
| Animal Shelters | Shelter and rescue |
| Animal Rescue | Wildlife and SPCA refs |
| Electricity Dept | DISCOM complaint lines |
| Sulabh / Public Toilets | Public toilet locator ref |
| Car Service Centres | Authorised workshop refs |
| Bike Service Centres | Two-wheeler service refs |
| Fuel Stations | Petrol pump directory ref |
Deep dive: Emergency helpline numbers: 112, 100, 101, 108
How tools are organised in the app
Open Desi Tools and you see categories matching the tables above. Search finds tools by English or Hindi title and by tags (emi, gst, upi, blood, etc.).
Popular tools — EMI, GST, income tax, UPI QR, age, unit converter — surface on home for one-tap access.
Browse by category on the web: Finance, Tax, Emergency, and more.
Offline vs online at a glance
Works offline (after install): EMI, GST, tax estimators, age, percentage, UPI QR generation, most converters, emergency helpline lists, PDF tools, password generator, and most calculators.
Needs internet: Currency, IFSC finder, pincode lookup, gold/silver live rates, and any tool that fetches live government or market data.
We label internet-dependent tools so you are never stuck mid-task on a bad connection.
Privacy and ads
Desi Tools does not require an account. Your loan amounts, salary inputs, and shop margins are not uploaded for calculation. There are no interrupting ads.
Read more: Why Desi Tools is offline, free, and ad-free
Who uses all 88 tools?
Nobody uses all 88 on day one. Shop owners lean on GST and UPI QR; salaried users on income tax and EMI; students on percentage and age; travellers on fuel and highway helplines. Install once; discover tools when life needs them.
Try EMI or GST on the web, then install the app for offline access. Desi Tools is maintained by CrazzyCodes — Tools for India.
Get the full bundle free
- Visit /#download
- Install from Google Play or App Store
- Star your favourite tools
- Share with family — parents, shop staff, college friends
88 tools. One app. Zero signup.
Related reading
- Why offline, free, no ads
- Best offline calculator apps
- EMI calculation guide
- GST CGST SGST IGST
- UPI QR for shops
- Income tax regimes
- Emergency numbers 112
Download Desi Tools now — tools for India, on your phone.
Frequently asked questions
How many tools are in Desi Tools?
Desi Tools includes 88 utilities across finance, tax, calculators, converters, QR and UPI, WhatsApp helpers, Instagram tools, everyday India features, documents, and emergency locators.
Are all 88 tools free?
Yes. The app is free on Google Play and the App Store with no subscription and no in-app purchase wall for core tools.
Which tools need internet?
A few tools need live data — currency converter, IFSC finder, pincode lookup, gold and silver rates, and similar. They are marked in the app. The majority work offline.
Can I use tools on the website too?
Yes. Popular tools have SEO pages at desitools.crazzycodes.com/tools/. The mobile app adds offline access and the full catalog in one place.
Get Desi Tools free
88 offline-first utilities for India. No signup. No interrupting ads.
Download now
