All Unit Conversion vs The Conversion App
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
The Conversion App
This utility app offers a simple and powerful way to perform various unit conversions. It supports a wide range of categories and allows users to request new conversions to be added. Available on iPhone and iPad, it's designed for ease of use.
- Area conversion
- Data conversion
- Length conversion
- Speed conversion
- Time conversion
- Volume conversion
- Weight conversion
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By far the simplest, cleanest and most powerful unit conversion app available. Support for iPhone, iPad and Family Sharing. If you want a unit that isn't provided send a feedback email through the app and it will be added promptly. Currently Available Conversions: - Area - Data-computer data (byte, kilobyte, megabyte, etc.) - Fuel-milage - Length - Power - Pressure - Speed - Time (days, weeks, hours, etc.) - Volume - Weight - Acceleration - Energy - Cooking - Frequency - Temperature What's Coming Next? - Real-time currencies - Anything you ask for - Mac Support - Apple TV Support If you send a request for a new conversion type consider it done. Thank you icons8 designers for the icons.
Screenshots
Verdict
The clearest difference is rating: All Unit Conversion at 4.6 against The Conversion App's 4.1. The Conversion App's advantage is device support (3 vs 1) and ratings volume (60 vs 17). On price, review sentiment, update cadence and ads 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.
All Unit Conversion holds the better App Store score, 4.6 against 4.1. Both are backed by a comparable volume of ratings — 17 and 60 respectively. Written reviews point the same way: 50% of All Unit Conversion's written reviews are positive against 45% of The Conversion App's.
All Unit Conversion ships an update every 2 months, The Conversion App every 5 weeks. The most recent releases landed on September 13, 2026 and September 18, 2026 respectively.
| Parameter | All Unit Conversion | The Conversion App |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (17 ratings) — better | 4.1 (60 ratings) |
| Positive reviews | 50.0% of reviews — better | 45.0% of reviews |
| Number of ratings | 17 | 60 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Tiago Do Couto | Sparrow Development LLC |
Customer experience
All Unit Conversion
The Conversion App
In-app purchases
All Unit Conversion
No in-app purchases
The Conversion App
No in-app purchases
Questions
Is All Unit Conversion free?
Is The Conversion App free?
Which has better reviews, All Unit Conversion or The Conversion App?
Do All Unit Conversion or The Conversion App have ads?
Which is updated more often, All Unit Conversion or The Conversion App?
Other comparisons
