# Interval Workouts & Exercises vs OTB

The clearest difference is in-app purchases: OTB at none against Interval Workouts & Exercises's 2. Interval Workouts & Exercises's advantage is update cadence (fortnightly vs every 4 months) and device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Interval Workouts & Exercises sells 2 in-app purchases, starting at $69.99 per year. OTB asks for nothing beyond the download.

Interval Workouts & Exercises ships an update fortnightly, OTB every 4 months. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Interval Workouts & Exercises | OTB |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Size | 163 MB | 312 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [RARUS-SOFT, OOO](https://appshunter.io/developer/1501340314) | [Maricel Constanza Testa](https://appshunter.io/developer/1806585199) |

## What reviewers say

### Interval Workouts & Exercises

[App page](https://appshunter.io/ios/app/interval-workouts-and-exercises/id6449491895)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access - Yearly | $69.99 | per year |
| Full Access - Yearly | $69.99 | per year |


### OTB

[App page](https://appshunter.io/ios/app/otb/id6744239108)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval Workouts & Exercises free?

Interval Workouts & Exercises is free to download, with in-app purchases available.

### Is OTB free?

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

### Do Interval Workouts & Exercises or OTB have ads?

Neither Interval Workouts & Exercises nor OTB shows ads.

### Which is updated more often, Interval Workouts & Exercises or OTB?

Interval Workouts & Exercises ships an update fortnightly, and OTB every 4 months. Most recently, Interval Workouts & Exercises was updated on October 3, 2026 and OTB on October 8, 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.*