# Multitape Turing Machine vs Abaco

The clearest difference is price: Multitape Turing Machine at Free against Abaco's $2.99. Abaco's advantage is update cadence (every 5 days vs every 8 months) and device support (4 vs 2). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Multitape Turing Machine is free to download; Abaco costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Multitape Turing Machine against 5.0 for Abaco. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Multitape Turing Machine ships an update every 8 months, Abaco every 5 days. The most recent releases landed on June 1, 2026 and August 30, 2026 respectively.

## The numbers

| Metric | Multitape Turing Machine | Abaco |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/multitape-turing-machine/id6443568065/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/abaco-flash-mental-math/id6753171585/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 days** |
| Monetization | **Free** | Paid |
| Size | 2 MB | 42 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Denis Mandych](https://appshunter.io/developer/1647227152) | [Jiwon Park](https://appshunter.io/developer/1842841535) |

## What reviewers say

### Multitape Turing Machine

[App page](https://appshunter.io/ios/app/multitape-turing-machine/id6443568065)

This app simulates a mathematical model of computation, allowing users to explore how abstract machines manipulate symbols on a tape according to defined rules. It's a tool for understanding the fundamental principles of computer algorithms.

**Highlights:** Turing machine simulation, Symbol manipulation on tape, Abstract computation model, Algorithm understanding, State and head movement

**In-app purchases:** none


### Abaco

[App page](https://appshunter.io/ios/app/abaco-flash-mental-math/id6753171585)

Enhance your calculation abilities with this mental math training app. It offers customizable practice modes for addition, subtraction, multiplication, and division, designed to improve concentration and cognitive skills. Suitable for students, teachers, and adults seeking brain training.

**Highlights:** Addition/Subtraction practice, Multiplication/Division practice, Adjustable difficulty, Customizable problem settings, Speed control, Multi-language support

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Multitape Turing Machine free?

Multitape Turing Machine is free to download, with no in-app purchases.

### Is Abaco free?

Abaco costs $2.99, with no in-app purchases.

### Which has better reviews, Multitape Turing Machine or Abaco?

Multitape Turing Machine and Abaco are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Multitape Turing Machine or Abaco have ads?

Neither Multitape Turing Machine nor Abaco shows ads.

### Which is updated more often, Multitape Turing Machine or Abaco?

Multitape Turing Machine ships an update every 8 months, and Abaco every 5 days. Most recently, Multitape Turing Machine was updated on June 1, 2026 and Abaco on August 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.*