Conversion! vs Wristy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Conversion!
Read full descriptionHide full description
Unit Converter – Fast, Accurate and Easy to Use Unit Converter is the perfect companion for quickly and accurately converting a wide variety of units. Whether you're at home, at work, in school, at university, or on the go, the app provides reliable results with an intuitive and easy-to-use interface. Features • Fast and precise unit conversions • Clean and intuitive user interface • Instant calculations while typing • Wide range of conversion categories • High calculation accuracy • Perfect for everyday use, education, engineering and professional work • Optimized for both iPhone and iPad • Simple, fast and efficient operation Available Categories Depending on the version, the app includes many conversion categories such as: • Length • Area • Volume • Weight • Speed • Temperature • Pressure • Energy • Power • Time • Angle • Digital Storage • Force • Density • Frequency • Currency and many more. Whether you need a quick conversion for everyday life or accurate engineering calculations, Unit Converter gives you reliable results in seconds.
Wristy
Displays your wrist temperature directly on your homescreen via widgets. Requires an Apple Watch Series 8 or Ultra to gather sleep temperature data. Supports dark mode and is available in English and German.
- Homescreen widgets
- Wrist temperature display
- Apple Watch Series 8/Ultra data integration
- HealthKit authorization
- Dark mode support
- English and German language support
Read full descriptionHide full description
Wristy show the temperature at your wrist as widget on your homescreen! NOTICE: This data is only gathered if you wear an Apple Watch Series 8 or Ultra while sleeping. If you don't have such data yet the widgets will show you a random preview of their functionality. The app allows you to authorize the data from HealthKit and shows it as a small, medium or large widget on your homescreen. It is kept plain and simple by design and includes only the most necessary things. In the near future I plan to add other data but the temperature at your wrist from HealthKit into the app to make even more widgets possible – but first things first. The app as well as the widgets fully support darkmode and are available in english and german.
Screenshots
Verdict
The clearest difference is price: Conversion! at Free against Wristy's $0.99. Wristy's advantage is update cadence (every 8 months vs every 20 months) and iOS requirement (16.0 vs 26.0). On ads, in-app purchases and device support 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
Conversion! is free to download; Wristy costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Conversion! ships an update every 20 months, Wristy every 8 months. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.
| Parameter | Conversion! | Wristy |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 20 months | Every 8 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Gerhard Lentschik | Daniel Bleisteiner |
In-app purchases
Conversion!
No in-app purchases
Wristy
No in-app purchases









