# Gym Timer Pro vs Custom Interval Timers

The clearest difference is ads: Gym Timer Pro at none against Custom Interval Timers's shown. Gym Timer Pro also leads on update cadence (every 4 days vs every 4 months) and monetization model (free vs ad-supported). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Gym Timer Pro against 5.0 for Custom Interval Timers. Both are backed by a comparable volume of ratings — 11 and 14 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Gym Timer Pro ships an update every 4 days, Custom Interval Timers every 4 months. The most recent releases landed on September 10, 2026 and August 24, 2026 respectively.

## The numbers

| Metric | Gym Timer Pro | Custom Interval Timers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (11 ratings)](https://appshunter.io/ios/app/gym-timer-pro-interval/id1539358626/reviews) | [5.0 (14 ratings)](https://appshunter.io/ios/app/custom-interval-timers/id1552160706/reviews) |
| Number of ratings | 11 | **14** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 4 months |
| Monetization | **Free** | Ad-supported |
| Size | 57 MB | 40 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dae Won Kim](https://appshunter.io/developer/1539358628) | [Alex Rich](https://appshunter.io/developer/1030627712) |

## What reviewers say

### Gym Timer Pro

[App page](https://appshunter.io/ios/app/gym-timer-pro-interval/id1539358626)

This free interval timer app helps you structure your workouts with customizable work, rest, and set periods. Easily configure countdowns or count-ups for up to three distinct workout items, with an optional ready time before starting.

**Highlights:** Countdown and count-up timers, Up to 3 workout items, Configurable work, rest, and sets, Adjustable ready time, Completely free with no ads or purchases

**In-app purchases:** none


### Custom Interval Timers

[App page](https://appshunter.io/ios/app/custom-interval-timers/id1552160706)

Design personalized interval timers for workouts or productivity. Its intuitive editor allows for custom flows with various settings like countdowns and personalized interfaces. Offers light/dark modes and an option to disable ads.

**Highlights:** Customizable interval flows, Intuitive timer editor, Count up or down timers, Personalized running interface, Light/dark mode, Ad-free option

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

**In-app purchases:** none


## Frequently asked questions

### Is Gym Timer Pro free?

Gym Timer Pro is free to download, with no in-app purchases.

### Is Custom Interval Timers free?

Custom Interval Timers is free to download, with no in-app purchases.

### Which has better reviews, Gym Timer Pro or Custom Interval Timers?

Gym Timer Pro and Custom Interval Timers are both rated 5.0 out of 5 on the App Store, from 11 and 14 ratings respectively.

### Do Gym Timer Pro or Custom Interval Timers have ads?

Custom Interval Timers shows ads; Gym Timer Pro does not.

### Which is updated more often, Gym Timer Pro or Custom Interval Timers?

Gym Timer Pro ships an update every 4 days, and Custom Interval Timers every 4 months. Most recently, Gym Timer Pro was updated on September 10, 2026 and Custom Interval Timers on August 24, 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.*