# Interval Pro Timer vs ByteFast

The clearest difference is iOS requirement: Interval Pro Timer at 15.1 against ByteFast's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Interval Pro Timer ships an update every 5 days, ByteFast weekly. The most recent releases landed on August 11, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Interval Pro Timer | ByteFast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/interval-pro-timer/id6759046377/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Free | — |
| Size | 30 MB | 10 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [MADELEINE RANDINE WOODBURY](https://appshunter.io/developer/1876516712) | [ByteSeed](https://appshunter.io/developer/1896674402) |

## What reviewers say

### Interval Pro Timer

[App page](https://appshunter.io/ios/app/interval-pro-timer/id6759046377)

Create custom timers for workouts, study, or any timed activity. Set work and rest intervals, rounds, and themes with audio and haptic cues. Your data stays private on your device.

**Highlights:** Custom work and rest intervals, Configurable round count, 3-second countdown, Audio and haptic cues, Background-safe notifications, Save unlimited timer presets, Light and dark themes

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

**In-app purchases:** none


### ByteFast

[App page](https://appshunter.io/ios/app/bytefast-fasting-tracker-168/id6769618458)

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

**In-app purchases:** none


## Frequently asked questions

### Is Interval Pro Timer free?

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

### Is ByteFast free?

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

### Do Interval Pro Timer or ByteFast have ads?

Neither Interval Pro Timer nor ByteFast shows ads.

### Which is updated more often, Interval Pro Timer or ByteFast?

Interval Pro Timer ships an update every 5 days, and ByteFast weekly. Most recently, Interval Pro Timer was updated on August 11, 2026 and ByteFast on September 9, 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.*