# Workout & Rest Interval Timer vs Keya Authenticator

The clearest difference is in-app purchases: Workout & Rest Interval Timer at none against Keya Authenticator's 3. Workout & Rest Interval Timer also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). Keya Authenticator's advantage is ads (none vs shown). On price and update cadence there is nothing between them.

Both are free to download. Keya Authenticator sells 3 one-off in-app purchases. Workout & Rest Interval Timer asks for nothing beyond the download.

Workout & Rest Interval Timer ships an update every 5 weeks, Keya Authenticator every 3 weeks. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Workout & Rest Interval Timer | Keya Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 33 MB | 3 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Seulki Eom](https://appshunter.io/developer/1718927408) | [Eldar SHAIDULLIN](https://appshunter.io/developer/1894639063) |

## What reviewers say

### Workout & Rest Interval Timer

[App page](https://appshunter.io/ios/app/workout-and-rest-interval-timer/id6737192266)

**Features:** macOS Compatibility

**In-app purchases:** none


### Keya Authenticator

[App page](https://appshunter.io/ios/app/keya-authenticator/id6764358712)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $2.99 | one-time |
| Pizza | $9.99 | one-time |
| Family Dinner | $29.99 | one-time |


## Frequently asked questions

### Is Workout & Rest Interval Timer free?

Workout & Rest Interval Timer is free to download, with no in-app purchases.

### Is Keya Authenticator free?

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

### Do Workout & Rest Interval Timer or Keya Authenticator have ads?

Workout & Rest Interval Timer shows ads; Keya Authenticator does not.

### Which is updated more often, Workout & Rest Interval Timer or Keya Authenticator?

Workout & Rest Interval Timer ships an update every 5 weeks, and Keya Authenticator every 3 weeks. Most recently, Workout & Rest Interval Timer was updated on October 11, 2026 and Keya Authenticator 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.*