# Interval Timer ~ HIIT & Tabata vs SumCha

The clearest difference is in-app purchases: Interval Timer ~ HIIT & Tabata at none against SumCha's 1. Interval Timer ~ HIIT & Tabata also leads on update cadence (every 2 days vs every 10 days) and iOS requirement (18.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. SumCha sells 1 one-off in-app purchase. Interval Timer ~ HIIT & Tabata asks for nothing beyond the download.

Interval Timer ~ HIIT & Tabata ships an update every 2 days, SumCha every 10 days. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Interval Timer ~ HIIT & Tabata | SumCha |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 10 days |
| Size | 9 MB | 7 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [manabu ueda](https://appshunter.io/developer/1606163236) | [Iksang Hwang](https://appshunter.io/developer/1712487986) |

## What reviewers say

### Interval Timer ~ HIIT & Tabata

[App page](https://appshunter.io/ios/app/interval-timer-hiit-and-tabata/id6762538816)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### SumCha

[App page](https://appshunter.io/ios/app/sumcha-interval-running/id6819497314)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Interval Timer ~ HIIT & Tabata free?

Interval Timer ~ HIIT & Tabata is free to download, with no in-app purchases.

### Is SumCha free?

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

### Do Interval Timer ~ HIIT & Tabata or SumCha have ads?

Both Interval Timer ~ HIIT & Tabata and SumCha show ads.

### Which is updated more often, Interval Timer ~ HIIT & Tabata or SumCha?

Interval Timer ~ HIIT & Tabata ships an update every 2 days, and SumCha every 10 days. Most recently, Interval Timer ~ HIIT & Tabata was updated on October 31, 2026 and SumCha on October 29, 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.*