# Know vs Mind Stretcher

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

Both are free to download. Know sells 1 one-off in-app purchase. Mind Stretcher asks for nothing beyond the download.

Know ships an update weekly, Mind Stretcher fortnightly. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Know | Mind Stretcher |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/know-it-all/id1513744752/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 21 MB | 32 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Amal TS](https://appshunter.io/developer/1492838041) | [Mind Stretcher](https://appshunter.io/developer/970360902) |

## What reviewers say

### Know

[App page](https://appshunter.io/ios/app/know-it-all/id1513744752)

Expand your knowledge across a wide range of subjects including history, science, and arts. Engage with interactive questions, learn new facts, and compete with friends to test your expertise.

**Highlights:** Learn about History, Science, Geography, Improve knowledge on Arts, Sports, Film, Answer trivia questions, Challenge friends, Wide range of topics covered

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Mind Stretcher

[App page](https://appshunter.io/ios/app/mind-stretcher/id6636467583)

**In-app purchases:** none


## Frequently asked questions

### Is Know free?

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

### Is Mind Stretcher free?

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

### Do Know or Mind Stretcher have ads?

Neither Know nor Mind Stretcher shows ads.

### Which is updated more often, Know or Mind Stretcher?

Know ships an update weekly, and Mind Stretcher fortnightly. Most recently, Know was updated on October 24, 2026 and Mind Stretcher on October 9, 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.*