# EdChanger Pro vs K

The clearest difference is in-app purchases: EdChanger Pro at none against K's 7. K's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. K sells 7 in-app purchases, starting at $6.99 per month. EdChanger Pro asks for nothing beyond the download.

EdChanger Pro ships an update every 2 months, K every 3 weeks. The most recent releases landed on October 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | EdChanger Pro | K |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/edchanger-pro/id6741165826/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 3 MB | 54 MB |
| Requires iOS | **17.6** | 18.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Jaime Bertran](https://appshunter.io/developer/1781097032) | [Observation Assistant LLC](https://appshunter.io/developer/1843956434) |

## What reviewers say

### EdChanger Pro

[App page](https://appshunter.io/ios/app/edchanger-pro/id6741165826)

This app offers a data-driven system for classroom observation and teacher development. It tracks student engagement in real-time, provides instant analytics, and offers a library of professional development resources. Designed to improve teaching practices through observation and research.

**Highlights:** Real-time student engagement tracking, Multiple observation categories, Instant analytics and engagement ratios, Professional development resources, Customizable observation routines, Teaching best practices library

**In-app purchases:** none


### K

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

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Individual Monthly | $6.99 | per month |
| Observer Monthly | $9.99 | per month |
| Snapshot Monthly | $9.99 | per month |
| Individual Annual | $39.99 | per year |
| Observer Annual | $59.99 | per year |
| Observer Unlimited | $99.99 | per year |
| Observations: 25 Pack | $39.99 | one-time |


## Frequently asked questions

### Is EdChanger Pro free?

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

### Is K free?

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

### Do EdChanger Pro or K have ads?

Neither EdChanger Pro nor K shows ads.

### Which is updated more often, EdChanger Pro or K?

EdChanger Pro ships an update every 2 months, and K every 3 weeks. Most recently, EdChanger Pro was updated on October 7, 2026 and K on October 30, 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.*