# Sport Timer vs GrowCalth

The clearest difference is in-app purchases: GrowCalth at none against Sport Timer's 2. GrowCalth also leads on update cadence (every 3 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sport Timer sells 2 one-off in-app purchases. GrowCalth asks for nothing beyond the download.

Sport Timer ships an update every 3 weeks, GrowCalth every 3 days. The most recent releases landed on September 9, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Sport Timer | GrowCalth |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 60 MB | 20 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Oliver Glaettli](https://appshunter.io/developer/1515025314) | [School of Science and Technology, Singapore](https://appshunter.io/developer/649690368) |

## What reviewers say

### Sport Timer

[App page](https://appshunter.io/ios/app/sport-timer-interval-tracker/id1628356363)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sports Timers Set One | $4.99 | one-time |
| Full Sports Timers Version | $7.99 | one-time |


### GrowCalth

[App page](https://appshunter.io/ios/app/growcalth/id6456388202)

**In-app purchases:** none


## Frequently asked questions

### Is Sport Timer free?

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

### Is GrowCalth free?

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

### Do Sport Timer or GrowCalth have ads?

Neither Sport Timer nor GrowCalth shows ads.

### Which is updated more often, Sport Timer or GrowCalth?

Sport Timer ships an update every 3 weeks, and GrowCalth every 3 days. Most recently, Sport Timer was updated on September 9, 2026 and GrowCalth on September 11, 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.*