# Interval Timer vs Ferro AI

The clearest difference is iOS requirement: Interval Timer at 16.0 against Ferro AI's 18.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Interval Timer sells 4 in-app purchases, starting at $3.99 per 7 days and Ferro AI sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Interval Timer ships an update every 6 weeks, Ferro AI monthly. The most recent releases landed on October 20, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Interval Timer | Ferro AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (39 ratings)](https://appshunter.io/ios/app/interval-timer-workout-timer/id6740899335/reviews)** | — |
| Number of ratings | **39** | — |
| Positive reviews | 85.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 73 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Vipul Prajapati](https://appshunter.io/developer/1737800971) | [FRANCESCO SCURA](https://appshunter.io/developer/1881130560) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-workout-timer/id6740899335)

This app provides a versatile interval timer for various fitness activities, including Tabata, HIIT, and running. Customize work and rest periods, set multiple rounds, and utilize voice prompts for seamless training. It functions as a stopwatch and countdown timer for diverse workout needs.

**Highlights:** Customizable interval timer, Tabata and HIIT workout support, Running and cardio intervals, Stopwatch and countdown timer, Voice prompts and loud alerts, Background mode, Screen stays awake

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Interval Timer For Workouts | $3.99 | per 7 days |
| Workouts Timer, Interval Timer | $9.99 | per month |
| Interval Timer, Tabata, HIIT | $19.99 | per year |
| Workouts Tabata Interval Timer Pro | $19.99 | one-time |


### Ferro AI

[App page](https://appshunter.io/ios/app/ferro-ai-timer-companion/id6759845484)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ferro Monthly | $3.99 | per month |
| Ferro Annual | $29.99 | per year |


## Frequently asked questions

### Is Interval Timer free?

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

### Is Ferro AI free?

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

### Do Interval Timer or Ferro AI have ads?

Neither Interval Timer nor Ferro AI shows ads.

### Which is updated more often, Interval Timer or Ferro AI?

Interval Timer ships an update every 6 weeks, and Ferro AI monthly. Most recently, Interval Timer was updated on October 20, 2026 and Ferro AI on October 22, 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.*