# SZOS vs GT FIT Pro

The clearest difference is rating: GT FIT Pro at 4.3 against SZOS's 2.8. GT FIT Pro also leads on ads (none vs shown) and monetization model (free vs ad-supported). SZOS's advantage is update cadence (every 3 weeks vs every 3 months) and ratings volume (105 vs 26). On price, review sentiment, 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.

GT FIT Pro holds the better App Store score, 4.3 against 2.8. Both are backed by a comparable volume of ratings — 105 and 26 respectively. Written reviews complicate that: 6% of SZOS's written reviews are positive against 0% of GT FIT Pro's, so the app with the better star average is not the one people write more warmly about.

SZOS ships an update every 3 weeks, GT FIT Pro every 3 months. The most recent releases landed on September 12, 2026 and August 10, 2026 respectively.

## The numbers

| Metric | SZOS | GT FIT Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (105 ratings)](https://appshunter.io/ios/app/szos/id1543848875/reviews) | **[4.3 (26 ratings)](https://appshunter.io/ios/app/gt-fit-pro/id1627436134/reviews)** |
| Number of ratings | **105** | 26 |
| Positive reviews | **5.6% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Ad-supported | **Free** |
| Size | 70 MB | 198 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [晟 谷](https://appshunter.io/developer/1543671031) | [景明 彭](https://appshunter.io/developer/1624821621) |

## What reviewers say

### SZOS

[App page](https://appshunter.io/ios/app/szos/id1543848875)

This app syncs with a smart watch to track your daily activity, including steps, heart rate, and sleep patterns. It provides insights into your health and fitness metrics.

**Highlights:** Step tracking, Heart rate monitoring, Sleep analysis, Syncs with smart watch, Activity mode

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### GT FIT Pro

[App page](https://appshunter.io/ios/app/gt-fit-pro/id1627436134)

Track your daily activity, sleep patterns, and workouts with detailed analysis. Set exercise goals, monitor calories burned, and record routes with GPS. Receive smart reminders for alarms and information.

**Highlights:** Accurate exercise records, Detailed sleep analysis, Step count and goal setting, GPS route tracking, Smart alarm and information reminders, HealthKit integration

**In-app purchases:** none


## Frequently asked questions

### Is SZOS free?

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

### Is GT FIT Pro free?

GT FIT Pro is free to download, with no in-app purchases.

### Which has better reviews, SZOS or GT FIT Pro?

GT FIT Pro is rated higher. SZOS averages 2.8 out of 5 from 105 ratings, while GT FIT Pro averages 4.3 from 26 ratings.

### Do SZOS or GT FIT Pro have ads?

SZOS shows ads; GT FIT Pro does not.

### Which is updated more often, SZOS or GT FIT Pro?

SZOS ships an update every 3 weeks, and GT FIT Pro every 3 months. Most recently, SZOS was updated on September 12, 2026 and GT FIT Pro on August 10, 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.*