# Mountain Project vs Simple Interval Timer

The clearest difference is review sentiment: Simple Interval Timer at 85% against Mountain Project's 41%. Simple Interval Timer also leads on rating (4.9 vs 4.6) and iOS requirement (14.5 vs 16.0). Mountain Project's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price, ratings volume and device support there is nothing between them.

Both are free to download. Simple Interval Timer sells 4 one-off in-app purchases. Mountain Project asks for nothing beyond the download.

Simple Interval Timer holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 4.6K and 5.4K respectively. Written reviews point the same way: 41% of Mountain Project's written reviews are positive against 85% of Simple Interval Timer's.

Mountain Project ships an update every 3 weeks, Simple Interval Timer every 8 months. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Mountain Project | Simple Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (4.6K ratings)](https://appshunter.io/ios/app/mountain-project/id452308783/reviews) | **[4.9 (5.4K ratings)](https://appshunter.io/ios/app/simple-interval-timer/id458334253/reviews)** |
| Number of ratings | 4.6K | **5.4K** |
| Positive reviews | 41.1% of reviews | **84.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 8 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 79 MB | 10 MB |
| Requires iOS | 16.0 | **14.5** |
| Devices | iPhone, iPad | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Adventure Projects Inc.](https://appshunter.io/developer/452308787) | [0FF](https://appshunter.io/developer/455256988) |

## What reviewers say

### Mountain Project

[App page](https://appshunter.io/ios/app/mountain-project/id452308783)

Discover and navigate to outdoor climbing areas, and find specific routes with detailed filters. Access route beta, photos, and topos offline, and view climbing area statistics. Connect with other climbers in the forum, track your progress, and create to-do lists.

**Highlights:** Find and navigate to climbing areas, Sort routes by discipline, difficulty, and rating, Search 155,000+ climbing routes offline, Download route beta, photos, and topos for offline use, View climbing area route statistics and critical info, Connect with climbers in the forum, Track attempts, sends, and create to-do lists

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

**In-app purchases:** none

**What reviewers like**

- 🗺️ Extensive database of climbing routes
- 📚 Detailed route information and beta
- 🗺️ Offline access to downloaded areas
- 👥 Helpful community contributions
- 📸 Useful photos and visuals

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🗺️ Inaccurate or outdated map information
- 🔍 Inefficient search and navigation
- 💰 Excessive advertising and promotion of other apps
- 📝 Inability to add comments or photos from the app

**Reported bugs**

- App crashes when opening routes or areas
- Map not showing all available climbs
- Incorrect date recording for ticks
- Inability to delete downloaded areas
- Login issues and account sync problems

**Requested features**

- Add ability to add/update routes and areas
- Implement better offline map functionality
- Improve search and filtering options
- Add user profile and route tracking features
- Enhance community engagement tools


### Simple Interval Timer

[App page](https://appshunter.io/ios/app/simple-interval-timer/id458334253)

This app provides a straightforward interval timer for various training types like running, cycling, and HIIT. Customize sets, action, and break durations for a personalized workout experience. It runs in the background and saves recent configurations.

**Highlights:** Customizable sets, action, and break durations, Plain and simple design, Saves last 5 configurations, Runs in the background, iOS screen dimming prevention, Apple Watch integration with heart rate monitoring

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Espresso | $0.99 | one-time |
| Americano | $1.99 | one-time |
| Ad-free version | $2.99 | one-time |
| Caramel Cappuccino | $2.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🚀 Efficient and straightforward
- 💰 Actually free, no paywall
- 🔊 Unobtrusive audio cues
- 🎶 Works well with music playback

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- ⚙️ Limited customization options
- 🔋 Compatibility issues with newer iOS versions
- 🔍 Difficulty deleting/managing saved configurations

**Reported bugs**

- Timer stops working when screen is locked
- Countdown beeps not syncing with timer
- Interval times not accurately tracked

**Requested features**

- Ability to name and delete saved configurations
- More granular interval time settings (e.g., 1-second increments)
- Stronger haptic feedback on Apple Watch
- Integration with workout tracking apps


## Frequently asked questions

### Is Mountain Project free?

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

### Is Simple Interval Timer free?

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

### Which has better reviews, Mountain Project or Simple Interval Timer?

Simple Interval Timer is rated higher. Mountain Project averages 4.6 out of 5 from 4.6K ratings, while Simple Interval Timer averages 4.9 from 5.4K ratings.

### Do Mountain Project or Simple Interval Timer have ads?

Simple Interval Timer shows ads; Mountain Project does not.

### Which is updated more often, Mountain Project or Simple Interval Timer?

Mountain Project ships an update every 3 weeks, and Simple Interval Timer every 8 months. Most recently, Mountain Project was updated on September 24, 2026 and Simple Interval Timer on September 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.*