# Knowlet vs String AI

The clearest difference is iOS requirement: String AI at 15.1 against Knowlet's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Knowlet sells 5 in-app purchases, starting at $6.99 per 7 days and String AI sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Knowlet | String AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (41 ratings)](https://appshunter.io/ios/app/knowlet-daily-learning-and-quiz/id6754519612/reviews)** | — |
| Number of ratings | **41** | — |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | Freemium | — |
| Size | 98 MB | 77 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Digital Quality](https://appshunter.io/developer/1848609657) | [Joshua Vigel](https://appshunter.io/developer/6801934740) |

## What reviewers say

### Knowlet

[App page](https://appshunter.io/ios/app/knowlet-daily-learning-and-quiz/id6754519612)

Master diverse subjects with short, engaging lessons and quizzes. Learn key concepts in just 15 minutes daily through bite-sized content, flashcards, and video modules. Personalized learning paths adapt to your level, making knowledge acquisition accessible and effective for busy adults.

**Highlights:** Bite-sized lessons (15 min), Short video lessons, Spaced-repetition flashcards, True/False challenge games, Daily knowledge quizzes, Structured learning paths, 12+ subjects covered

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Plan | $6.99 | per 7 days |
| Monthly Subscription Plan | $14.99 | per month |
| Monthly Premium Offer | $24.99 | per 3 months |
| Annual Offer | $29.99 | per year |
| Annual Subscription Plan | $59.99 | per year |


### String AI

[App page](https://appshunter.io/ios/app/string-ai/id6801934738)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| String AI Pro | $9.99 | per month |
| String AI Pro | $59.99 | per year |


## Frequently asked questions

### Is Knowlet free?

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

### Is String AI free?

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

### Do Knowlet or String AI have ads?

Neither Knowlet nor String AI 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.*