# Trach vs Aritmo

The clearest difference is ads: Trach at none against Aritmo's shown. Aritmo's advantage is update cadence (every 2 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Trach sells 1 one-off in-app purchase and Aritmo sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Trach ships an update every 2 weeks, Aritmo every 2 days. The most recent releases landed on October 23, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Trach | Aritmo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (13 ratings)](https://appshunter.io/ios/app/trach-trachtenberg/id1502611431/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 93.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | Free | — |
| Size | 6 MB | 13 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Giorgio Network, LLC](https://appshunter.io/developer/1502611430) | [LUCCA EMMANUEL PINELI SIMOES LTDA](https://appshunter.io/developer/1884998353) |

## What reviewers say

### Trach

[App page](https://appshunter.io/ios/app/trach-trachtenberg/id1502611431)

Master rapid mental math with this app, offering step-by-step tutorials and practice exercises for complex calculations. Learn and practice the Trachtenberg method to sharpen your number sense and multiply faster.

**Highlights:** Trachtenberg method tutorials, Practice exercises, Progress tracking, Mental math techniques, Rapid multiplication, Number sense development

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Multiply Tutorials | $4.99 | one-time |


### Aritmo

[App page](https://appshunter.io/ios/app/aritmo/id6760564207)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Aritmo Premium | $3.99 | per month |
| Aritmo Yearly Premium Access | $29.99 | per year |


## Frequently asked questions

### Is Trach free?

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

### Is Aritmo free?

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

### Do Trach or Aritmo have ads?

Aritmo shows ads; Trach does not.

### Which is updated more often, Trach or Aritmo?

Trach ships an update every 2 weeks, and Aritmo every 2 days. Most recently, Trach was updated on October 23, 2026 and Aritmo on October 8, 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.*