# STF Kronos vs FITJO

The clearest difference is update cadence: FITJO at monthly against STF Kronos's every 2 months. STF Kronos's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

STF Kronos ships an update every 2 months, FITJO monthly. The most recent releases landed on September 20, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | STF Kronos | FITJO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (9 ratings)](https://appshunter.io/ios/app/stf-kronos/id1476804951/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | — |
| Size | 228 MB | 102 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [STUFFACTORY](https://appshunter.io/developer/1476804950) | [JP Consulting UG (haftungsbeschraenkt)](https://appshunter.io/developer/1605626662) |

## What reviewers say

### STF Kronos

[App page](https://appshunter.io/ios/app/stf-kronos/id1476804951)

This app syncs with your smartwatch to monitor your fitness performance across various sports. Track heart rate, steps, and sedentary periods to analyze your health metrics. It offers additional features based on your specific smartwatch model.

**Highlights:** Smartwatch synchronization, Sports performance monitoring, Heart rate tracking, Step counting, Sedentary period analysis, iOS Health App integration

**Features:** Vision Pro support

**In-app purchases:** none


### FITJO

[App page](https://appshunter.io/ios/app/fitjo/id1605626660)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is STF Kronos free?

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

### Is FITJO free?

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

### Do STF Kronos or FITJO have ads?

Neither STF Kronos nor FITJO shows ads.

### Which is updated more often, STF Kronos or FITJO?

STF Kronos ships an update every 2 months, and FITJO monthly. Most recently, STF Kronos was updated on September 20, 2026 and FITJO on May 16, 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.*