# Kno App vs Lectra

The clearest difference is update cadence: Kno App at every 4 days against Lectra's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Kno App sells 2 in-app purchases, starting at $4.99 per month and Lectra sells 6 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Kno App ships an update every 4 days, Lectra every 6 weeks. The most recent releases landed on September 7, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Kno App | Lectra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 weeks |
| Size | 32 MB | 30 MB |
| Requires iOS | 17.0 | 17 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [BRBR GROUP](https://appshunter.io/developer/1882102236) | [Marat Sadykov](https://appshunter.io/developer/1790045105) |

## What reviewers say

### Kno App

[App page](https://appshunter.io/ios/app/kno-app-learn-something-new/id6759986030)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kno Premium Monthly | $4.99 | per month |
| Kno Premium Yearly | $39.99 | per year |


### Lectra

[App page](https://appshunter.io/ios/app/lectra-ai-study-notes/id6760621249)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription Discounted | $6.99 | per month |
| Monthly Subscription | $9.99 | per month |
| Monthly Pro | $14.99 | per month |
| Yearly Subscription | $59.99 | per year |
| Yearly Pro Discounted | $59.99 | per year |
| Yearly Pro | $79.99 | per year |


## Frequently asked questions

### Is Kno App free?

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

### Is Lectra free?

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

### Do Kno App or Lectra have ads?

Neither Kno App nor Lectra shows ads.

### Which is updated more often, Kno App or Lectra?

Kno App ships an update every 4 days, and Lectra every 6 weeks. Most recently, Kno App was updated on September 7, 2026 and Lectra on September 25, 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.*