# LessonNote vs K

The clearest difference is update cadence: K at every 10 days against LessonNote's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. LessonNote sells 6 in-app purchases, starting at $29.99 per 3 months and K sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

LessonNote ships an update monthly, K every 10 days. The most recent releases landed on September 13, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | LessonNote | K |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (10 ratings)](https://appshunter.io/ios/app/lessonnote/id507466065/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 65.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 62 MB | 54 MB |
| Requires iOS | **17.6** | 18.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Lesson Study Alliance](https://appshunter.io/developer/507466068) | [Observation Assistant LLC](https://appshunter.io/developer/1843956434) |

## What reviewers say

### LessonNote

[App page](https://appshunter.io/ios/app/lessonnote/id507466065)

This tool helps educators document classroom lessons by tracking student interactions, capturing notes, and recording time spent in various learning modalities. It facilitates data-driven conversations to improve teaching and learning outcomes.

**Highlights:** Track student interactions and conversation duration, Record handwritten notes and observations, Capture photos of student work, Measure time spent in different learning modalities, Review data for student-focused discussions, Ideal for peer observation and coaching

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Months of Pro | $29.99 | per 3 months |
| 6 Months of Pro | $44.99 | per 6 months |
| 1 Year Pro | $64.99 | per year |
| 6-month LessonNote Pro subscription | $89.99 | one-time |
| 1-year LessonNote Pro subscription | $149.99 | one-time |
| 2-year LessonNote Pro subscription | $249.99 | one-time |


### K

[App page](https://appshunter.io/ios/app/k-12-observation-assistant/id6753606149)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Snapshot Monthly | $9.99 | per month |


## Frequently asked questions

### Is LessonNote free?

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

### Is K free?

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

### Do LessonNote or K have ads?

Neither LessonNote nor K shows ads.

### Which is updated more often, LessonNote or K?

LessonNote ships an update monthly, and K every 10 days. Most recently, LessonNote was updated on September 13, 2026 and K on September 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.*