# K vs RefynED

The clearest difference is in-app purchases: RefynED at none against K's 1. RefynED also leads on iOS requirement (15.0 vs 18.4). K's advantage is update cadence (every 10 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. K sells 1 in-app purchase, starting at $9.99 per month. RefynED asks for nothing beyond the download.

K ships an update every 10 days, RefynED every 2 months. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | K | RefynED |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Size | 54 MB | 10 MB |
| Requires iOS | 18.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Observation Assistant LLC](https://appshunter.io/developer/1843956434) | [REFYNED, INC.](https://appshunter.io/developer/6786408180) |

## What reviewers say

### 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 |


### RefynED

[App page](https://appshunter.io/ios/app/refyned/id6786408178)

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

**In-app purchases:** none


## Frequently asked questions

### Is K free?

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

### Is RefynED free?

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

### Do K or RefynED have ads?

Neither K nor RefynED shows ads.

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

K ships an update every 10 days, and RefynED every 2 months. Most recently, K was updated on September 9, 2026 and RefynED on September 10, 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.*