# Gem Identifier & Rock ID vs Math Riddles,Tricks,Questions

The clearest difference is update cadence: Math Riddles,Tricks,Questions at weekly against Gem Identifier & Rock ID's monthly. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Gem Identifier & Rock ID sells 5 in-app purchases, starting at $6.99 per 7 days and Math Riddles,Tricks,Questions sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.4 for Gem Identifier & Rock ID against 4.4 for Math Riddles,Tricks,Questions. Both are backed by a comparable volume of ratings — 24 and 24 respectively.

Gem Identifier & Rock ID ships an update monthly, Math Riddles,Tricks,Questions weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Gem Identifier & Rock ID | Math Riddles,Tricks,Questions |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (24 ratings)](https://appshunter.io/ios/app/gem-identifier-and-rock-id/id6748907151/reviews) | [4.4 (24 ratings)](https://appshunter.io/ios/app/math-riddlestricksquestions/id6751900926/reviews) |
| Number of ratings | 24 | 24 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 36 MB | 33 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Innotent LTD](https://appshunter.io/developer/1695717745) | [Viacheslav Khakhulin](https://appshunter.io/developer/558806761) |

## What reviewers say

### Gem Identifier & Rock ID

[App page](https://appshunter.io/ios/app/gem-identifier-and-rock-id/id6748907151)

Identify rocks, gems, and crystals instantly by taking a photo. Access a comprehensive database with detailed information and authenticate precious stones. Includes a built-in metal detector for further analysis.

**Highlights:** Instant stone identification via photo, Comprehensive stone database, Gem authentication tool, Built-in metal detector, AI recognition technology

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $6.99 | per 7 days |
| Yearly | $19.99 | per year |
| Yearly, 3 Days Free Trial | $29.99 | per year |
| Yearly | $29.99 | per year |
| Lifetime | $14.99 | one-time |


### Math Riddles,Tricks,Questions

[App page](https://appshunter.io/ios/app/math-riddlestricksquestions/id6751900926)

This app offers quick math quizzes to boost mental agility and focus. It features timed challenges, customizable operations, and progress tracking for learners of all ages. Improve your speed and memory with daily brain training exercises.

**Highlights:** Daily brain training, Timed challenges, Customizable math operations, Multiple difficulty levels, Progress tracking, Game-like interface

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $2.99 | per month |
| Yearly Pro | $11.99 | per year |
| Lifetime Pro | $17.99 | one-time |


## Frequently asked questions

### Is Gem Identifier & Rock ID free?

Gem Identifier & Rock ID is free to download, with in-app purchases available.

### Is Math Riddles,Tricks,Questions free?

Math Riddles,Tricks,Questions is free to download, with in-app purchases available.

### Which has better reviews, Gem Identifier & Rock ID or Math Riddles,Tricks,Questions?

Gem Identifier & Rock ID and Math Riddles,Tricks,Questions are both rated 4.4 out of 5 on the App Store, from 24 and 24 ratings respectively.

### Do Gem Identifier & Rock ID or Math Riddles,Tricks,Questions have ads?

Both Gem Identifier & Rock ID and Math Riddles,Tricks,Questions show ads.

### Which is updated more often, Gem Identifier & Rock ID or Math Riddles,Tricks,Questions?

Gem Identifier & Rock ID ships an update monthly, and Math Riddles,Tricks,Questions weekly. Most recently, Gem Identifier & Rock ID was updated on October 24, 2026 and Math Riddles,Tricks,Questions on October 24, 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.*