# eSquirrel vs Stone Identifier by RockPic

The clearest difference is review sentiment: eSquirrel at 100% against Stone Identifier by RockPic's 75%. eSquirrel also leads on monetization model (free vs free with in-app purchases). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. eSquirrel sells 10 one-off in-app purchases and Stone Identifier by RockPic sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

eSquirrel ships an update every 5 weeks, Stone Identifier by RockPic every 3 weeks. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | eSquirrel | Stone Identifier by RockPic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (160 ratings)](https://appshunter.io/ios/app/stone-identifier-by-rockpic/id6743698832/reviews)** |
| Number of ratings | — | **160** |
| Positive reviews | **100.0% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 60 MB | 77 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [eSquirrel GmbH](https://appshunter.io/developer/987611199) | [Pablo Paciello](https://appshunter.io/developer/834434174) |

## What reviewers say

### eSquirrel

[App page](https://appshunter.io/ios/app/esquirrel/id987611200)

This app helps users learn and retain information through spaced repetition quizzes. It offers gamified learning with quests and levels, ideal for exam preparation and employee training. Practice anytime, anywhere, and track your progress against classmates.

**Highlights:** Spaced repetition for long-term memory, Gamified quests with acorn rewards, Progress tracking and ranking lists, Mobile-optimized quiz format, Tailored learning materials, Employee training modules

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DigiUp NEXT (hu) | Free | one-time |
| DigiUp NEXT (at) | Free | one-time |
| Englisch Vocabulary for MORE!1 | Free | one-time |
| Digitale Grundbildung 1 | Free | one-time |
| LSL: Lebensmittelverschwendung | Free | one-time |
| Märchen für alle – Märchenklassiker | $14.99 | one-time |
| Digitale Grundbildung 3 | $14.99 | one-time |
| einfach bio 4 (öbv) | $14.99 | one-time |
| Musik 1 (eSquirrel) | $14.99 | one-time |
| Innere Medizin (Herold) | $89.99 | one-time |


### Stone Identifier by RockPic

[App page](https://appshunter.io/ios/app/stone-identifier-by-rockpic/id6743698832)

Instantly identify rocks, minerals, and gemstones by simply snapping a photo. This AI-powered app provides detailed insights into a stone's rarity, composition, origin, and uses. Perfect for collectors, students, and geology enthusiasts looking to learn more about their discoveries.

**Highlights:** AI-powered rock identification, Gemstone scanner, Rarity and magnetism analysis, Composition and origin details, Alternative names and uses, Organize rock collection

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Subscription weekly | $4.99 | per 7 days |
| PRO Subscription monthly | $6.99 | per month |
| PRO Subscription Yearly | $29.99 | per year |
| RockPic Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is eSquirrel free?

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

### Is Stone Identifier by RockPic free?

Stone Identifier by RockPic is free to download, with in-app purchases available.

### Do eSquirrel or Stone Identifier by RockPic have ads?

Neither eSquirrel nor Stone Identifier by RockPic shows ads.

### Which is updated more often, eSquirrel or Stone Identifier by RockPic?

eSquirrel ships an update every 5 weeks, and Stone Identifier by RockPic every 3 weeks. Most recently, eSquirrel was updated on November 6, 2026 and Stone Identifier by RockPic on November 4, 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.*