# Knowt vs Aperture

The clearest difference is chart position: Knowt at #120 against Aperture's unranked. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Knowt sells 27 in-app purchases, starting at $5.99 per month and Aperture sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Knowt ships an update weekly, Aperture every 4 days. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Knowt | Aperture |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (11K ratings)](https://appshunter.io/ios/app/knowt-ai-flashcards-and-notes/id6463744184/reviews)** | — |
| Number of ratings | **11K** | — |
| Positive reviews | 61.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#120** | — |
| Size | 150 MB | 57 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Knowt Inc.](https://appshunter.io/developer/1462368056) | [Quiet Optics LLC](https://appshunter.io/developer/6790210601) |

## What reviewers say

### Knowt

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

**Currently charting:** #120 Top Free · Education, #128 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


### Aperture

[App page](https://appshunter.io/ios/app/aperture-remote-viewing/id6790210599)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Aperture Pro — Monthly | $4.99 | per month |
| Aperture Pro — Annual | $29.99 | per year |
| Aperture Pro — Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Knowt free?

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

### Is Aperture free?

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

### Do Knowt or Aperture have ads?

Neither Knowt nor Aperture shows ads.

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

Knowt ships an update weekly, and Aperture every 4 days. Most recently, Knowt was updated on October 24, 2026 and Aperture 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.*