# Translate Offline Dictionary vs (Open Source) Mental Math

The clearest difference is ads: (Open Source) Mental Math at none against Translate Offline Dictionary's shown. (Open Source) Mental Math also leads on update cadence (every 5 weeks vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Translate Offline Dictionary ships an update every 3 months, (Open Source) Mental Math every 5 weeks. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Translate Offline Dictionary | (Open Source) Mental Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/open-source-mental-math/id6788418444/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | — | Free |
| Size | 188 MB | 41 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jayantilal Chovatiya](https://appshunter.io/developer/1868372447) | [AHMET EMRE DEDELER](https://appshunter.io/developer/1870913629) |

## What reviewers say

### Translate Offline Dictionary

[App page](https://appshunter.io/ios/app/translate-offline-dictionary/id6757703135)

**Features:** macOS Compatibility

**In-app purchases:** none


### (Open Source) Mental Math

[App page](https://appshunter.io/ios/app/open-source-mental-math/id6788418444)

This application offers a free, open-source platform for practicing mental arithmetic. It features timed tests, custom drills, and a comprehensive library of mental math tricks. All content is available offline without ads or paywalls.

**Highlights:** Timed arithmetic tests, Customizable drills, Mental math tricks library, Offline progress tracking, Multiple operation types, Fast session interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Translate Offline Dictionary free?

Translate Offline Dictionary is free to download, with no in-app purchases.

### Is (Open Source) Mental Math free?

(Open Source) Mental Math is free to download, with no in-app purchases.

### Do Translate Offline Dictionary or (Open Source) Mental Math have ads?

Translate Offline Dictionary shows ads; (Open Source) Mental Math does not.

### Which is updated more often, Translate Offline Dictionary or (Open Source) Mental Math?

Translate Offline Dictionary ships an update every 3 months, and (Open Source) Mental Math every 5 weeks. Most recently, Translate Offline Dictionary was updated on October 19, 2026 and (Open Source) Mental Math on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*