All Unit Conversion vs Unit Converter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
All Unit Conversion
Easily convert between various units of measurement with this free utility app. It supports conversions for length, area, volume, mass, time, digital storage, energy, and currency.
- Length conversion
- Area conversion
- Volume conversion
- Mass conversion
- Time conversion
- Currency conversion
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This is a simple and useful free unit converter - Length Converter - Area Converter - Volume Converter - Mass Converter - Time Converter - Digital Storage Converter - Energy Converter - Currency Converter
Unit Converter
Easily perform instant unit conversions across a vast array of categories, from engineering to everyday life. Features include dark mode, favorites, and dual language support for enhanced usability. Ideal for scientists, engineers, students, and anyone needing quick, accurate conversions.
- Extensive conversion categories
- Dark mode for night use
- Favorite frequently used conversions
- Dual language support
- Offline functionality
- User feedback option
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Convert 1,000+ units across 80+ converters—from everyday measurements to advanced engineering and scientific units. Unit Converter - Scientific is fast, accurate, free, and completely ad-free. WHY YOU’LL LOVE IT • 80+ converters and 1,000+ units • Metric and imperial measurement systems • Fast and accurate results • Standard unit conversions work offline • Save frequently used conversions as favorites • Comfortable dark mode • No account required • Available in English, Turkish, German, French, Spanish, and Brazilian Portuguese • All conversion tools remain free; optional tips unlock no features POPULAR CONVERSIONS • Length: centimeters, inches, meters, feet, miles, and kilometers • Weight and mass: kilograms, pounds, ounces, and grams • Temperature: Celsius, Fahrenheit, and Kelvin • Volume: milliliters, liters, cups, and gallons • Speed: miles per hour and kilometers per hour • Pressure: PSI, bar, pascal, and more • Currency conversion ADVANCED SCIENTIFIC AND ENGINEERING TOOLS Convert energy, power, force, torque, density, acceleration, flow, viscosity, electricity, magnetism, light, heat transfer, and radiology units—all in one clean interface. Whether you are an engineer, scientist, student, traveler, or simply need a quick everyday conversion, Unit Converter - Scientific gives you the tools you need without ads or unnecessary complexity.
Screenshots
Verdict
The clearest difference is review sentiment: Unit Converter at 90% against All Unit Conversion's 50%. Unit Converter also leads on update cadence (weekly vs every 2 months) and rating (4.9 vs 4.6). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Unit Converter holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 17 and 18 respectively. Written reviews point the same way: 50% of All Unit Conversion's written reviews are positive against 90% of Unit Converter's.
All Unit Conversion ships an update every 2 months, Unit Converter weekly. The most recent releases landed on October 17, 2026 and September 30, 2026 respectively.
| Parameter | All Unit Conversion | Unit Converter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (17 ratings) | 4.9 (18 ratings) — better |
| Positive reviews | 50.0% of reviews | 90.0% of reviews — better |
| Number of ratings | 17 | 18 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 22 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Tiago Do Couto | Ahmet Burak Albayrak |
Customer experience
All Unit Conversion
Unit Converter
In-app purchases
All Unit Conversion
No in-app purchases
Unit Converter
No in-app purchases
Questions
Is All Unit Conversion free?
Is Unit Converter free?
Which has better reviews, All Unit Conversion or Unit Converter?
Do All Unit Conversion or Unit Converter have ads?
Which is updated more often, All Unit Conversion or Unit Converter?
Other comparisons
