# Interval Timer HIIT Tabata vs RepBook

The clearest difference is update cadence: RepBook at every 5 days against Interval Timer HIIT Tabata's monthly. RepBook also leads on iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Interval Timer HIIT Tabata sells 2 in-app purchases, starting at $4.99 per 7 days and RepBook sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Interval Timer HIIT Tabata ships an update monthly, RepBook every 5 days. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Interval Timer HIIT Tabata | RepBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Size | 32 MB | 52 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Volodymyr Yahenskyi](https://appshunter.io/developer/961335645) | [Jimmy Brooks](https://appshunter.io/developer/6792578845) |

## What reviewers say

### Interval Timer HIIT Tabata

[App page](https://appshunter.io/ios/app/interval-timer-hiit-tabata/id6787092191)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly plan | $4.99 | per 7 days |
| Annual plan | $39.99 | per year |


### RepBook

[App page](https://appshunter.io/ios/app/repbook-workout-log/id6792578843)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RepBook Pro Monthly | $4.99 | per month |
| RepBook Pro Annual | $49.99 | per year |
| RepBook Pro Lifetime | $150.00 | one-time |


## Frequently asked questions

### Is Interval Timer HIIT Tabata free?

Interval Timer HIIT Tabata is free to download, with in-app purchases available.

### Is RepBook free?

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

### Do Interval Timer HIIT Tabata or RepBook have ads?

Neither Interval Timer HIIT Tabata nor RepBook shows ads.

### Which is updated more often, Interval Timer HIIT Tabata or RepBook?

Interval Timer HIIT Tabata ships an update monthly, and RepBook every 5 days. Most recently, Interval Timer HIIT Tabata was updated on October 10, 2026 and RepBook on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*