# Audio Notes+ vs K

The clearest difference is in-app purchases: Audio Notes+ at none against K's 1. Audio Notes+ also leads on iOS requirement (14.0 vs 18.4). K's advantage is update cadence (every 3 weeks vs every 4 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. Audio Notes+ asks for nothing beyond the download.

Audio Notes+ ships an update every 4 months, K every 3 weeks. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Audio Notes+ | K |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Size | 8 MB | 54 MB |
| Requires iOS | **14.0** | 18.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [PLUS INFOSYS](https://appshunter.io/developer/1183728680) | [Observation Assistant LLC](https://appshunter.io/developer/1843956434) |

## What reviewers say

### Audio Notes+

[App page](https://appshunter.io/ios/app/audio-notes-plus/id1660210905)

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

**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 (1)**

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


## Frequently asked questions

### Is Audio Notes+ free?

Audio Notes+ is free to download, with no in-app purchases.

### Is K free?

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

### Do Audio Notes+ or K have ads?

Neither Audio Notes+ nor K shows ads.

### Which is updated more often, Audio Notes+ or K?

Audio Notes+ ships an update every 4 months, and K every 3 weeks. Most recently, Audio Notes+ was updated on October 2, 2026 and K on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*