# Study Timer vs Rock Finder AI

The clearest difference is rating: Study Timer at 5.0 against Rock Finder AI's 4.3. Study Timer also leads on review sentiment (86% vs 78%) and device support (3 vs 1). Rock Finder AI's advantage is ads (none vs shown) and ratings volume (48 vs 1). On price, in-app purchases and monetization model there is nothing between them.

Both are free to download. Study Timer sells 7 in-app purchases, starting at $2.99 per month and Rock Finder AI sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Study Timer holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Rock Finder AI has 48 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 86% of Study Timer's written reviews are positive against 78% of Rock Finder AI's.

Study Timer ships an update every 2 weeks, Rock Finder AI weekly. The most recent releases landed on September 4, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Study Timer | Rock Finder AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/study-timer-ai-focus-tracker/id1590300077/reviews)** | [4.3 (48 ratings)](https://appshunter.io/ios/app/rock-finder-ai-stone-scanner/id6744815436/reviews) |
| Number of ratings | 1 | **48** |
| Positive reviews | **86.0% of reviews** | 77.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 158 MB | 34 MB |
| Requires iOS | **14.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ataberk Koroglu](https://appshunter.io/developer/1561690167) | [Davyd Rapp](https://appshunter.io/developer/1792201589) |

## What reviewers say

### Study Timer

[App page](https://appshunter.io/ios/app/study-timer-ai-focus-tracker/id1590300077)

Enhance your study habits with a smart focus timer and AI coach. Plan your day, track progress by subject, and stay motivated to achieve your academic and personal development goals.

**Highlights:** AI focus timer, Pomodoro study system, AI coach for planning, Study tracking by lesson/topic, Task management, Exam preparation support

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Monthly Offer | $4.99 | per month |
| 3 Months Offer | $5.99 | per 3 months |
| 6 Months Special Offer! | $12.99 | per 6 months |
| 3 Months Subscription | $12.99 | per 3 months |
| 6 Months Subscription | $19.99 | per 6 months |
| Restore Streak | $0.99 | one-time |


### Rock Finder AI

[App page](https://appshunter.io/ios/app/rock-finder-ai-stone-scanner/id6744815436)

Instantly identify rocks and minerals with AI by simply taking a photo. Explore detailed profiles, learn about classifications and properties, and build your personal collection. Perfect for enthusiasts and beginners alike.

**Highlights:** AI-powered real-time identification, Detailed rock and mineral profiles, Crystal system and hardness information, Explore mineral categories, Personal rock collection management, Shareable collection

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rock finder AI PRO | $6.99 | per 7 days |
| Rock finder AI PRO | $6.99 | per 7 days |
| Rock finder AI PRO | $49.99 | per year |

**What reviewers like**

- 🚀 Accurate and fast rock identification
- 👍 Easy to use and intuitive interface
- 💡 Helpful for learning about rocks and minerals
- 🌍 Works well in remote and offline areas
- 🎓 Great for educational and outdoor activities

**What reviewers complain about**

- 🔒 Requires subscription to access full features
- 💰 Perceived as overpriced by some users

**Reported bugs**

- Compatibility issues with older devices
- Occasional crashes or scanning failures

**Requested features**

- Free trial or limited free version
- More detailed rock information and analysis


## Frequently asked questions

### Is Study Timer free?

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

### Is Rock Finder AI free?

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

### Which has better reviews, Study Timer or Rock Finder AI?

Study Timer is rated higher. Study Timer averages 5.0 out of 5 from 1 ratings, while Rock Finder AI averages 4.3 from 48 ratings.

### Do Study Timer or Rock Finder AI have ads?

Study Timer shows ads; Rock Finder AI does not.

### Which is updated more often, Study Timer or Rock Finder AI?

Study Timer ships an update every 2 weeks, and Rock Finder AI weekly. Most recently, Study Timer was updated on September 4, 2026 and Rock Finder AI on September 10, 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.*