# Interval Timer vs UV Butterfly

The clearest difference is in-app purchases: UV Butterfly at none against Interval Timer's 3. Interval Timer's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 18.5). On price, update cadence and ads there is nothing between them.

Both are free to download. Interval Timer sells 3 in-app purchases, starting at $1.99 per month. UV Butterfly asks for nothing beyond the download.

Interval Timer ships an update every 5 months, UV Butterfly every 3 months. Both last shipped on October 6, 2026.

## The numbers

| Metric | Interval Timer | UV Butterfly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (149 ratings)](https://appshunter.io/ios/app/interval-timer-tabata-timer/id1579228573/reviews)** | — |
| Number of ratings | **149** | — |
| Positive reviews | 29.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 5 MB |
| Requires iOS | **12.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [DMYTRO DOLOTOV](https://appshunter.io/developer/1536992504) | [Tobiasz Sikora](https://appshunter.io/developer/1846034791) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-tabata-timer/id1579228573)

This versatile timer assists with various fitness routines, including HIIT, Tabata, and boxing. It also functions as a productivity timer for tasks like Pomodoro. Easily configure intervals, sets, and rest periods for personalized workouts.

**Highlights:** HIIT and Tabata workout timer, Boxing and martial arts round timer, Productivity and Pomodoro timer, Customizable interval and set configurations, Templates for quick setup, Supports various fitness exercises

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Access | $1.99 | per month |
| Lifetime Access -50% | $4.99 | one-time |
| Lifetime Access | $9.99 | one-time |


### UV Butterfly

[App page](https://appshunter.io/ios/app/uv-butterfly/id6753972570)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer free?

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

### Is UV Butterfly free?

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

### Do Interval Timer or UV Butterfly have ads?

Neither Interval Timer nor UV Butterfly shows ads.

### Which is updated more often, Interval Timer or UV Butterfly?

Interval Timer ships an update every 5 months, and UV Butterfly every 3 months. Most recently, Interval Timer was updated on October 6, 2026 and UV Butterfly on October 6, 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.*