# ZymFit vs Just'a Tabata

The clearest difference is ads: ZymFit at none against Just'a Tabata's shown. ZymFit also leads on iOS requirement (16.6 vs 26.0). Just'a Tabata's advantage is update cadence (every 5 days vs every 3 weeks) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. ZymFit sells 4 in-app purchases, starting at $4.99 per month and Just'a Tabata sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ZymFit ships an update every 3 weeks, Just'a Tabata every 5 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ZymFit | Just'a Tabata |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 16 MB | 21 MB |
| Requires iOS | **16.6** | 26.0 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Roberto Bilic](https://appshunter.io/developer/1892893051) | [Vinh Nguyen](https://appshunter.io/developer/1802304933) |

## What reviewers say

### ZymFit

[App page](https://appshunter.io/ios/app/zymfit-calorie-scanner/id6762097915)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZymFit Pro | $4.99 | per month |
| ZymFit Basic | $4.99 | per month |
| ZymFit Pro | $34.99 | per year |
| ZymFit Basic | $49.99 | per year |


### Just'a Tabata

[App page](https://appshunter.io/ios/app/justa-tabata-a-workout-timer/id6789550194)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Yearly | $4.99 | per year |
| Just'a Tabata Pro | $0.99 | one-time |


## Frequently asked questions

### Is ZymFit free?

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

### Is Just'a Tabata free?

Just'a Tabata is free to download, with in-app purchases available.

### Do ZymFit or Just'a Tabata have ads?

Just'a Tabata shows ads; ZymFit does not.

### Which is updated more often, ZymFit or Just'a Tabata?

ZymFit ships an update every 3 weeks, and Just'a Tabata every 5 days. Most recently, ZymFit was updated on October 25, 2026 and Just'a Tabata on October 28, 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.*