# Custom Interval Timers vs Interval Timer One

The clearest difference is ads: Interval Timer One at none against Custom Interval Timers's shown. Interval Timer One also leads on monetization model (free vs ad-supported) and update cadence (every 2 months vs every 4 months). Custom Interval Timers's advantage is ratings volume (14 vs 2). On price, rating, in-app purchases and device support 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 Custom Interval Timers against 5.0 for Interval Timer One. That said, the two scores are not equally well evidenced: Custom Interval Timers has 14 ratings behind it against 2, so its average is the more settled of the two.

Custom Interval Timers ships an update every 4 months, Interval Timer One every 2 months. The most recent releases landed on October 5, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Custom Interval Timers | Interval Timer One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (14 ratings)](https://appshunter.io/ios/app/custom-interval-timers/id1552160706/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/interval-timer-one/id6449265364/reviews) |
| Number of ratings | **14** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Ad-supported | **Free** |
| Size | 40 MB | 2 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alex Rich](https://appshunter.io/developer/1030627712) | [jun hyun](https://appshunter.io/developer/1688453095) |

## What reviewers say

### 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


### Interval Timer One

[App page](https://appshunter.io/ios/app/interval-timer-one/id6449265364)

This user-friendly interval timer app simplifies fitness routines by allowing effortless customization of workout durations. It offers intuitive controls for setting intervals, pausing, resuming, and adjusting the timer, ensuring a focused and efficient training experience without unnecessary features.

**Highlights:** Intuitive interval customization, Pause and resume functionality, Adjust timer forward/backward, Uninterrupted timer operation, Plays music without disruption

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Custom Interval Timers free?

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

### Is Interval Timer One free?

Interval Timer One is free to download, with no in-app purchases.

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

Custom Interval Timers and Interval Timer One are both rated 5.0 out of 5 on the App Store, from 14 and 2 ratings respectively.

### Do Custom Interval Timers or Interval Timer One have ads?

Custom Interval Timers shows ads; Interval Timer One does not.

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

Custom Interval Timers ships an update every 4 months, and Interval Timer One every 2 months. Most recently, Custom Interval Timers was updated on October 5, 2026 and Interval Timer One on October 1, 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.*