Convertible vs All Unit Conversion
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Convertible
This app offers a comprehensive unit and currency conversion tool with a visually appealing interface and extensive unit options. It supports standard and non-standard units, compound conversions, and fraction input, making it versatile for various needs.
- Extensive standard and non-standard unit conversions
- Currency conversion with 161 currencies
- Compound unit conversion
- Fraction input and output
- Adjustable decimal precision
- Elegant interface with themes
- iPad split view and Today Extension support
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Features: • iPad split view and slide over mode for compatible devices (iOS 9+ only) • Today Extension, view your most recent conversion (great for Currency updates) • Elegant interface with 19 beautiful themes • Full range of standard units for both metric (SI) and non-metric conversions • Hundreds of non-standard units categorised for quick access: Geography, Nature, Everyday Objects, Sports, etc. • Compound unit conversion on many units including time (e.g. hours, minutes, seconds), length, area, etc. • Fraction input and output on some units (e.g. inches) • URL Scheme support, automate conversions with apps such as Launch Center Pro. • Adjustable decimal precision from 5 to 15 significant figures. • A huge range of standard and non standard units from planck lengths to the size of the visible universe. • Share conversions via Twitter, Facebook, email and messaging. Convertible helps to visualise unit conversions in ways not possible with other unit converters: compare distance in miles to the length of the Amazon River, area in square yards to the size of a football field, the possibilities are endless. More conversion types are being added with each release, currently Convertible can convert: • Length • Mass/Weight • Area • 161 Currencies including Bitcoin • Energy • Power • Torque • Volume • Flow • Pressure • Force • Fuel Economy • Temperature • Data • Time • Speed Unit conversion is also entertaining and educational thanks to the many non-standard units of measure available. “Stands out from many other apps of its type.” - The New York Times "Convertible is one of the most peculiar and fun iPhone apps I’ve downloaded recently." - MacStories.net "With customizable themes, amazing readability and an intuitive and easy to use interface, Convertible is definitely in a class of its own." - 4.5 stars, 148apps.com
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
Screenshots
Verdict
Convertible and All Unit Conversion both sit at 4.8 stars, but that hides the real split: 89% of Convertible's written reviews are positive against 50% of All Unit Conversion's. Convertible also leads on device support (3 vs 1) and ratings volume (101 vs 29). All Unit Conversion's advantage is monetization model (free vs paid). On price, rating, 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.
On the App Store both sit at effectively the same score — 4.8 for Convertible against 4.8 for All Unit Conversion. Both are backed by a comparable volume of ratings — 101 and 29 respectively. Written reviews are what separate them: 89% of Convertible's written reviews are positive against 50% of All Unit Conversion's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | Convertible | All Unit Conversion |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (101 ratings) | 4.8 (29 ratings) — better |
| Positive reviews | 89.2% of reviews — better | 50.0% of reviews |
| Number of ratings | 101 — better | 29 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 12 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Efecto Pty Ltd | Tiago Do Couto |
Customer experience
Convertible
All Unit Conversion
Bugs and requests
Convertible
Reported bugs
2 issues- Conversion results not always accurate
- Crashes when trying to share conversion results
Requested features
4 requests- Add support for more measurement categories (e.g. fuel consumption, flow rate)
- Implement a search function to easily find units
- Provide a widget for quick access to conversions
- Add support for more languages
All Unit Conversion
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Convertible
No in-app purchases
All Unit Conversion
No in-app purchases
Questions
Is Convertible free?
Is All Unit Conversion free?
Which has better reviews, Convertible or All Unit Conversion?
Do Convertible or All Unit Conversion have ads?
Which is updated more often, Convertible or All Unit Conversion?
Other comparisons
