# Remumber vs Mental Calculation & Abacus

The clearest difference is rating: Mental Calculation & Abacus at 4.8 against Remumber's 4.0. Mental Calculation & Abacus also leads on ratings volume (4 vs 1) and iOS requirement (12.0 vs 14.2). Remumber's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Mental Calculation & Abacus holds the better App Store score, 4.8 against 4.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Remumber ships an update every 9 months, Mental Calculation & Abacus every 6 months. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Remumber | Mental Calculation & Abacus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/remumber/id903443542/reviews) | **[4.8 (4 ratings)](https://appshunter.io/ios/app/mental-calculation-and-abacus/id1582407909/reviews)** |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 6 months** |
| Monetization | **Free** | Ad-supported |
| Size | 1 MB | 143 MB |
| Requires iOS | 14.2 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fredrik Blank](https://appshunter.io/developer/903443545) | [Park Jisang](https://appshunter.io/developer/995438886) |

## What reviewers say

### Remumber

[App page](https://appshunter.io/ios/app/remumber/id903443542)

This game challenges your ability to memorize sequences of numbers. It's a straightforward yet surprisingly difficult test of your memory recall skills.

**Highlights:** Number memory training, Memory recall testing, Simple gameplay, Challenging difficulty

**In-app purchases:** none


### Mental Calculation & Abacus

[App page](https://appshunter.io/ios/app/mental-calculation-and-abacus/id1582407909)

Engage in a fun and educational game designed to enhance mental calculation skills. Learn to use an abacus with an easy-to-follow tutorial and practice with diverse question types.

**Highlights:** Mental calculation practice, Abacus learning tutorial, Variety of practice questions, Suitable for all ages

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

**In-app purchases:** none


## Frequently asked questions

### Is Remumber free?

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

### Is Mental Calculation & Abacus free?

Mental Calculation & Abacus is free to download, with no in-app purchases.

### Which has better reviews, Remumber or Mental Calculation & Abacus?

Mental Calculation & Abacus is rated higher. Remumber averages 4.0 out of 5 from 1 ratings, while Mental Calculation & Abacus averages 4.8 from 4 ratings.

### Do Remumber or Mental Calculation & Abacus have ads?

Mental Calculation & Abacus shows ads; Remumber does not.

### Which is updated more often, Remumber or Mental Calculation & Abacus?

Remumber ships an update every 9 months, and Mental Calculation & Abacus every 6 months. Most recently, Remumber was updated on November 1, 2026 and Mental Calculation & Abacus on November 7, 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.*