# R.A.B. Intervals Timer vs Justfit

The clearest difference is review sentiment: Justfit at 100% against R.A.B. Intervals Timer's 50%. Justfit also leads on device support (4 vs 2). R.A.B. Intervals Timer's advantage is iOS requirement (10.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. R.A.B. Intervals Timer sells 1 one-off in-app purchase and Justfit sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

R.A.B. Intervals Timer ships an update every 4 days, Justfit every 3 days. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | R.A.B. Intervals Timer | Justfit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/justfit-boxing-interval-timer/id6449503037/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 days | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 45 MB | 117 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Hyun-il Kim](https://appshunter.io/developer/1273509681) | [Ferda Nahit Fidanci](https://appshunter.io/developer/1689464732) |

## What reviewers say

### R.A.B. Intervals Timer

[App page](https://appshunter.io/ios/app/rab-intervals-timer/id1456220476)

Create custom interval timers with detailed settings for rounds and repetitions. Features simple animations to guide you through Ready, Action, and Break phases. An in-app purchase is available to remove banner ads.

**Highlights:** Detailed interval time settings, Customizable round repetitions, Timeline animation for phases, Create multiple timers, Ad removal via in-app purchase

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ad | $0.99 | one-time |


### Justfit

[App page](https://appshunter.io/ios/app/justfit-boxing-interval-timer/id6449503037)

This interval timer app allows users to create custom workout routines like Tabata, HIIT, or boxing circuits with customizable intervals and voice announcements. It offers background operation, Apple Watch integration, and detailed workout history.

**Highlights:** Unlimited custom intervals, sets, and rest periods, Voice announcements and countdowns, Background operation with large display, Apple Watch app and Lock Screen Live Activity, Workout history and weekly insights, Widgets and Siri integration

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annual | $14.99 | per year |
| Justfit Pro Annual | $14.99 | per year |
| Justfit Pro Lifetime | $22.99 | one-time |
| Lifetime access | $29.99 | one-time |


## Frequently asked questions

### Is R.A.B. Intervals Timer free?

R.A.B. Intervals Timer is free to download, with in-app purchases available.

### Is Justfit free?

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

### Do R.A.B. Intervals Timer or Justfit have ads?

Both R.A.B. Intervals Timer and Justfit show ads.

### Which is updated more often, R.A.B. Intervals Timer or Justfit?

R.A.B. Intervals Timer ships an update every 4 days, and Justfit every 3 days. Most recently, R.A.B. Intervals Timer was updated on November 2, 2026 and Justfit on November 7, 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.*