# OzChild vs StoneID Rock Identifier

The clearest difference is in-app purchases: OzChild at none against StoneID Rock Identifier's 3. OzChild also leads on iOS requirement (13.0 vs 18.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. StoneID Rock Identifier sells 3 in-app purchases, starting at $3.99 per 7 days. OzChild asks for nothing beyond the download.

OzChild ships an update every 10 months, StoneID Rock Identifier every 6 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | OzChild | StoneID Rock Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.3 (3 ratings)](https://appshunter.io/ios/app/stoneid-rock-identifier/id6741160166/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 months** |
| Monetization | — | Free with in-app purchases |
| Size | 28 MB | 88 MB |
| Requires iOS | **13.0** | 18.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Children Australia Inc.](https://appshunter.io/developer/1437601412) | [Kesifler Dunyasi Ltd.](https://appshunter.io/developer/1173478543) |

## What reviewers say

### OzChild

[App page](https://appshunter.io/ios/app/ozchild/id1437601413)

**Features:** macOS Compatibility

**In-app purchases:** none


### StoneID Rock Identifier

[App page](https://appshunter.io/ios/app/stoneid-rock-identifier/id6741160166)

Identify rocks, stones, and gems using their scientific properties. Explore detailed descriptions, high-quality images, and advanced filters. Perfect for students, collectors, and outdoor enthusiasts interested in geology.

**Highlights:** Identify rocks by scientific properties, Filter and compare rocks by geological criteria, In-depth descriptions and high-quality images, Advanced scientific filters, Pocket geologist functionality

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $3.99 | per 7 days |
| Monthly Subscription | $5.99 | per month |
| Annual Subscription | $9.99 | per year |


## Frequently asked questions

### Is OzChild free?

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

### Is StoneID Rock Identifier free?

StoneID Rock Identifier is free to download, with in-app purchases available.

### Do OzChild or StoneID Rock Identifier have ads?

Neither OzChild nor StoneID Rock Identifier shows ads.

### Which is updated more often, OzChild or StoneID Rock Identifier?

OzChild ships an update every 10 months, and StoneID Rock Identifier every 6 months. Most recently, OzChild was updated on November 2, 2026 and StoneID Rock Identifier on October 30, 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.*