# Interval Timer vs PROSPR

The clearest difference is iOS requirement: Interval Timer at 16.0 against PROSPR'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 12 in-app purchases, starting at $1.99 per month and PROSPR sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Interval Timer ships an update every 4 weeks, PROSPR every 2 weeks. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Interval Timer | PROSPR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3.5K ratings)](https://appshunter.io/ios/app/interval-timer/id1610398390/reviews)** | — |
| Number of ratings | **3.5K** | — |
| Positive reviews | 66.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Monetization | Subscription | — |
| Size | 243 MB | 21 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [HIIT Apps Sp. z o.o.](https://appshunter.io/developer/1713395721) | [INFN8](https://appshunter.io/developer/1733831464) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer/id1610398390)

This app is a versatile interval timer designed for various training styles like Tabata and HIIT. It offers customizable workout parameters, voice guidance, and music ducking for an enhanced training experience. Save your custom workouts and track your progress.

**Highlights:** Customizable interval settings, Voice assistant with text-to-speech, Music ducking for audio integration, Save custom workouts, Tabata, Rounds, Stopwatch modes, Apple Health integration

**Features:** Family Sharing, Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Intervals: monthly membership | $1.99 | per month |
| Intervals: membership | $3.99 | per 3 months |
| Intervals: monthly membership | $4.99 | per month |
| Intervals: yearly membership | $6.99 | per year |
| Intervals: yearly membership | $9.99 | per year |
| Intervals: yearly membership | $19.99 | per year |
| Intervals: yearly membership | $24.99 | per year |
| Intervals: membership | $24.99 | per year |
| Intervals \| PRO version | $14.99 | one-time |
| Intervals \| Membership | $14.99 | one-time |
| Intervals \| Membership | $34.99 | one-time |
| Intervals \| Membership | $39.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Customizable workouts
- 🚀 Versatile and efficient
- 🚀 Helpful voice prompts
- 👍 Seamless music integration

**What reviewers complain about**

- 🐛 Bugs causing lost workouts
- 🔋 High battery consumption
- 💰 Subscription-based model
- 🔒 Forced free trial
- 🐛 Timing issues with intervals

**Reported bugs**

- Workouts disappearing
- App crashes and freezes
- Timing issues with intervals

**Requested features**

- Apple Watch integration
- More customization options
- Additional audio cues and prompts
- Improved workout tracking and history


### PROSPR

[App page](https://appshunter.io/ios/app/prospr/id6756621507)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PROSPR Monthly Subscription | $6.99 | per month |
| PROSPR 1 Year Promo | $9.99 | per year |
| PROSPR Yearly Subscription | $44.99 | per year |


## Frequently asked questions

### Is Interval Timer free?

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

### Is PROSPR free?

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

### Do Interval Timer or PROSPR have ads?

Neither Interval Timer nor PROSPR shows ads.

### Which is updated more often, Interval Timer or PROSPR?

Interval Timer ships an update every 4 weeks, and PROSPR every 2 weeks. Most recently, Interval Timer was updated on October 14, 2026 and PROSPR 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.*