# Knowt vs Debugging

The clearest difference is review sentiment: Debugging at 100% against Knowt's 62%. Debugging also leads on in-app purchases (none vs 32) and update cadence (daily vs weekly). Knowt's advantage is ratings volume (11K vs 5) and chart position (#77 vs unranked). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Knowt sells 27 in-app purchases, starting at $5.99 per month. Debugging asks for nothing beyond the download.

Debugging holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Knowt has 11K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 62% of Knowt's written reviews are positive against 100% of Debugging's.

Knowt ships an update weekly, Debugging daily. The most recent releases landed on October 29, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Knowt | Debugging |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (11K ratings)](https://appshunter.io/ios/app/knowt-ai-flashcards-and-notes/id6463744184/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/debugging-inside-the-machine/id6764385144/reviews)** |
| Number of ratings | **11K** | 5 |
| Positive reviews | 61.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#77** | — |
| Size | 150 MB | 7 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Knowt Inc.](https://appshunter.io/developer/1462368056) | [Kevin Hare](https://appshunter.io/developer/1343264116) |

## What reviewers say

### Knowt

[App page](https://appshunter.io/ios/app/knowt-ai-flashcards-and-notes/id6463744184)

**Currently charting:** #77 Top Free · Education, #106 Top Grossing · Education (US App Store)

This study app uses AI to transform notes and lecture videos into flashcards and practice tests. It offers various study modes, including spaced repetition, and provides free AP exam study guides. Millions of student-created resources are available.

**Highlights:** AI flashcard maker, Summarize lecture videos, Create practice tests from notes/PDFs/videos, Free Learn Mode with multiple study modes, Spaced Repetition algorithm, Free AP Study Guides, Sync across mobile and web

**Features:** macOS Compatibility

**In-app purchases (27)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Student Plus Monthly | $5.99 | per month |
| Student Plus Monthly | $7.99 | per month |
| Teacher Plus Monthly | $7.99 | per month |
| Student Ultra Weekly | $9.99 | per 7 days |
| Student Ultra Monthly | $12.99 | per month |
| Teacher Ultra Monthly | $12.99 | per month |
| Student Ultra Monthly | $14.99 | per month |
| Teacher Ultra Monthly | $14.99 | per month |
| Student Ultra Monthly | $19.99 | per month |
| Student Ultra Monthly | $19.99 | per month |
| Student Ultra Monthly | $19.99 | per month |
| Teacher Ultra Monthly | $19.99 | per month |
| Student Plus Annual | $23.99 | per year |
| Student Ultra Monthly | $24.99 | per month |
| Teacher Plus Annual | $35.99 | per year |
| Teacher Ultra Annual | $47.99 | per year |
| Student Ultra Annual | $59.99 | per year |
| Teacher Ultra Annual | $59.99 | per year |
| Student Ultra Annual | $95.99 | per year |
| Teacher Ultra Annual | $95.99 | per year |
| Student Ultra Annual | $119.99 | per year |
| Student Ultra Annual | $119.99 | per year |
| Student Ultra Annual | $119.99 | per year |
| Student Ultra Annual | $119.99 | per year |
| Teacher Ultra Annual | $119.99 | per year |
| Student Ultra Annual | $149.99 | per year |
| Student ultra annual | $149.99 | per year |

**What reviewers like**

- 🚀 Amazing app
- 🚀 Quizlet alternative
- 👍 Helpful for studying
- 👍 Easy to use
- 👍 Intuitive interface

**What reviewers complain about**

- 🐛 Frequent crashes
- 🐛 Glitchy app
- 🐛 Bugs with flashcard functionality
- 🐛 Inconsistent performance
- 🐛 Syncing issues between devices

**Reported bugs**

- Flashcards disappearing or duplicating
- Incorrect answers marked as correct
- Freezing on update screen
- Compatibility issues on certain devices

**Requested features**

- Split screen support for iPad
- Ability to manually sort flashcards
- More formatting options for flashcards
- Improved AI-generated notes
- Offline study mode


### Debugging

[App page](https://appshunter.io/ios/app/debugging-inside-the-machine/id6764385144)

Practice debugging skills in a fun arcade platformer. Solve real AP Computer Science exam questions to fix glitches and escape a corrupted machine. Features multiple difficulty levels and offline play.

**Highlights:** Debugging practice arcade platformer, AP CSP & CSA modes, Multiple difficulty levels, Collectible bugs with multiple-choice questions, Offline play, no account required, Built for phones and tablets

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

**In-app purchases:** none


## Frequently asked questions

### Is Knowt free?

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

### Is Debugging free?

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

### Which has better reviews, Knowt or Debugging?

Debugging is rated higher. Knowt averages 4.7 out of 5 from 11K ratings, while Debugging averages 5.0 from 5 ratings.

### Do Knowt or Debugging have ads?

Neither Knowt nor Debugging shows ads.

### Which is updated more often, Knowt or Debugging?

Knowt ships an update weekly, and Debugging daily. Most recently, Knowt was updated on October 29, 2026 and Debugging on October 16, 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.*