# Zabuton vs TrackBack Symptom Tracker

The clearest difference is iOS requirement: TrackBack Symptom Tracker at 15.1 against Zabuton's 17.6. 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.

## The numbers

| Metric | Zabuton | TrackBack Symptom Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 18 MB | 44 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Harmonic Projects LLC](https://appshunter.io/developer/1772974838) | [Geoffrey Jensen](https://appshunter.io/developer/1877156841) |

## What reviewers say

### Zabuton

[App page](https://appshunter.io/ios/app/zabuton/id6736668920)

**Features:** macOS Compatibility

**In-app purchases:** none


### TrackBack Symptom Tracker

[App page](https://appshunter.io/ios/app/trackback-symptom-tracker/id6759174933)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zabuton free?

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

### Is TrackBack Symptom Tracker free?

TrackBack Symptom Tracker is free to download, with no in-app purchases.

### Do Zabuton or TrackBack Symptom Tracker have ads?

Neither Zabuton nor TrackBack Symptom 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.*