# Symptom Trigger Tracker 3 vs Studio 191

The clearest difference is price: Studio 191 at Free against Symptom Trigger Tracker 3's $3.99. Symptom Trigger Tracker 3's advantage is iOS requirement (11.0 vs 16.4). On ads, in-app purchases and device support there is nothing between them.

Studio 191 is free to download; Symptom Trigger Tracker 3 costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Symptom Trigger Tracker 3 | Studio 191 |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Size | 11 MB | 84 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [cellHigh](https://appshunter.io/developer/380874052) | [Studio 191](https://appshunter.io/developer/1879263999) |

## What reviewers say

### Symptom Trigger Tracker 3

[App page](https://appshunter.io/ios/app/symptom-trigger-tracker-3/id6463772369)

**Features:** macOS Compatibility

**In-app purchases:** none


### Studio 191

[App page](https://appshunter.io/ios/app/studio-191/id6557075174)

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

**In-app purchases:** none


## Frequently asked questions

### Is Symptom Trigger Tracker 3 free?

Symptom Trigger Tracker 3 costs $3.99, with no in-app purchases.

### Is Studio 191 free?

Studio 191 is free to download, with no in-app purchases.

### Do Symptom Trigger Tracker 3 or Studio 191 have ads?

Neither Symptom Trigger Tracker 3 nor Studio 191 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.*