# Stem Global Service vs Watch Tracker

The clearest difference is in-app purchases: Stem Global Service at none against Watch Tracker's 1. Watch Tracker's advantage is iOS requirement (16.6 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Watch Tracker sells 1 one-off in-app purchase. Stem Global Service asks for nothing beyond the download.

## The numbers

| Metric | Stem Global Service | Watch Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/watch-tracker-collection/id6752223953/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | — | Free with in-app purchases |
| Size | 25 MB | 5 MB |
| Requires iOS | 18.6 | **16.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [STEM s.r.l.](https://appshunter.io/developer/1577070000) | [Vladislav Zhirnov](https://appshunter.io/developer/1476188065) |

## What reviewers say

### Stem Global Service

[App page](https://appshunter.io/ios/app/stem-global-service/id6502402821)

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

**In-app purchases:** none


### Watch Tracker

[App page](https://appshunter.io/ios/app/watch-tracker-collection/id6752223953)

Measure and record how your watches perform over time. This app helps you track accuracy, identify issues like magnetism, and understand positional variance with detailed charts and exports. It provides a smart reference time and a magnetism check utility for watch collectors.

**Highlights:** Record watch accuracy in seconds per day (SPD), Build and manage a watch collection, Smart atomic-time reference, Capture real-world context (position, notes), Magnetism check using phone's magnetometer, Export data as PDF/PNG or CSV

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $1.99 | one-time |


## Frequently asked questions

### Is Stem Global Service free?

Stem Global Service is free to download, with no in-app purchases.

### Is Watch Tracker free?

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

### Do Stem Global Service or Watch Tracker have ads?

Neither Stem Global Service nor Watch Tracker shows ads.

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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.*