# Premise One vs Cosuki

The clearest difference is in-app purchases: Premise One at none against Cosuki's 1. Cosuki's advantage is iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Cosuki sells 1 one-off in-app purchase. Premise One asks for nothing beyond the download.

## The numbers

| Metric | Premise One | Cosuki |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/premise-one/id6794781894/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | Free | — |
| Size | 189 MB | 40 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NASIF FRANKLIN](https://appshunter.io/developer/6794781896) | [Khuselbayar Enkhmunkh](https://appshunter.io/developer/6807482270) |

## What reviewers say

### Premise One

[App page](https://appshunter.io/ios/app/premise-one/id6794781894)

This app teaches critical thinking and reasoning skills through structured lessons on logic, from fundamental concepts to advanced formal and philosophical topics. It helps users identify fallacies, analyze arguments, and strengthen their understanding with interactive exercises and quizzes.

**Highlights:** Structured logic lessons, Formal and philosophical logic, Identifying logical fallacies, Argument analysis, Interactive exercises, Practice questions and quizzes

**Features:** macOS Compatibility

**In-app purchases:** none


### Cosuki

[App page](https://appshunter.io/ios/app/cosuki-learn-algebra/id6807482268)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cosuki Plus | $4.99 | one-time |


## Frequently asked questions

### Is Premise One free?

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

### Is Cosuki free?

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

### Do Premise One or Cosuki have ads?

Neither Premise One nor Cosuki shows ads.

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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.*