# Sonic Math vs Trachtenberg Kids

The clearest difference is ads: Trachtenberg Kids at none against Sonic Math's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Sonic Math sells 1 one-off in-app purchase and Trachtenberg Kids sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Sonic Math ships an update monthly, Trachtenberg Kids every 3 weeks. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Sonic Math | Trachtenberg Kids |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 41 MB | 49 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MASAKI CHIBA](https://appshunter.io/developer/1890488277) | [Hayde Tech Ltd](https://appshunter.io/developer/1856967495) |

## What reviewers say

### Sonic Math

[App page](https://appshunter.io/ios/app/sonic-math-mental-math-drill/id6765611618)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $1.99 | one-time |


### Trachtenberg Kids

[App page](https://appshunter.io/ios/app/trachtenberg-kids-mental-math/id6775289064)

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Monthly | $9.99 | per month |
| Premium - Yearly | $29.99 | per year |


## Frequently asked questions

### Is Sonic Math free?

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

### Is Trachtenberg Kids free?

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

### Do Sonic Math or Trachtenberg Kids have ads?

Sonic Math shows ads; Trachtenberg Kids does not.

### Which is updated more often, Sonic Math or Trachtenberg Kids?

Sonic Math ships an update monthly, and Trachtenberg Kids every 3 weeks. Most recently, Sonic Math was updated on October 31, 2026 and Trachtenberg Kids on November 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.*