# DieselOn vs CalAquaFit

The clearest difference is in-app purchases: DieselOn at none against CalAquaFit's 8. DieselOn also leads on ads (none vs shown). CalAquaFit's advantage is update cadence (every 3 weeks vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. CalAquaFit sells 8 in-app purchases, starting at $2.99 per month. DieselOn asks for nothing beyond the download.

DieselOn ships an update every 2 months, CalAquaFit every 3 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | DieselOn | CalAquaFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (350 ratings)](https://appshunter.io/ios/app/dieselon/id1156389971/reviews)** | — |
| Number of ratings | **350** | — |
| Positive reviews | 37.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 243 MB | 43 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fossil, Inc.](https://appshunter.io/developer/403955532) | [Zeynel Cumhur MURAT](https://appshunter.io/developer/1847187609) |

## What reviewers say

### DieselOn

[App page](https://appshunter.io/ios/app/dieselon/id1156389971)

Enhance your smartwatch experience with unique watch faces and customizable notifications. This companion app connects to your smartphone to offer fitness tracking, real-time weather, and more.

**Highlights:** Unique watch faces, Customizable notifications, Fitness tracking (steps, calories, sleep), Heart rate and blood oxygen monitoring, Real-time weather updates, Find your smartwatch feature, Voice assistant integration

**In-app purchases:** none


### CalAquaFit

[App page](https://appshunter.io/ios/app/calaquafit/id6757205515)

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Aylık | $2.99 | per month |
| Beslenme Koçu Aylık | $4.99 | per month |
| Antrenman Koçu Aylık | $4.99 | per month |
| Tam Paket Aylık | $5.99 | per month |
| Premium Yıllık | $29.99 | per year |
| Beslenme Koçu Yıllık | $49.99 | per year |
| Antrenman Koçu Yıllık | $49.99 | per year |
| Tam Paket Yıllık | $59.99 | per year |


## Frequently asked questions

### Is DieselOn free?

DieselOn is free to download, with no in-app purchases.

### Is CalAquaFit free?

CalAquaFit is free to download, with in-app purchases available.

### Do DieselOn or CalAquaFit have ads?

CalAquaFit shows ads; DieselOn does not.

### Which is updated more often, DieselOn or CalAquaFit?

DieselOn ships an update every 2 months, and CalAquaFit every 3 weeks. Most recently, DieselOn was updated on October 29, 2026 and CalAquaFit on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*