# Model Usage vs Dev Notes++

The clearest difference is in-app purchases: Model Usage at none against Dev Notes++'s 3. Model Usage also leads on device support (6 vs 2) and iOS requirement (17.0 vs 26.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Dev Notes++ sells 3 in-app purchases, starting at $3.99 per month. Model Usage asks for nothing beyond the download.

Model Usage ships an update every 3 days, Dev Notes++ every 2 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Model Usage | Dev Notes++ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | **Every 2 days** |
| Size | 5 MB | 3 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rayan Khan](https://appshunter.io/developer/1863389662) | [Sylvain Lafrance](https://appshunter.io/developer/1197090441) |

## What reviewers say

### Model Usage

[App page](https://appshunter.io/ios/app/model-usage/id6761831599)

**Features:** Apple Watch app, iMessage stickers

**In-app purchases:** none


### Dev Notes++

[App page](https://appshunter.io/ios/app/dev-notes-plus-plus/id6762881892)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dev Notes - Monthly | $3.99 | per month |
| Dev Notes - Yearly Subscription | $24.99 | per year |
| Dev Notes - Lifetime | $34.99 | one-time |


## Frequently asked questions

### Is Model Usage free?

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

### Is Dev Notes++ free?

Dev Notes++ is free to download, with in-app purchases available.

### Do Model Usage or Dev Notes++ have ads?

Neither Model Usage nor Dev Notes++ shows ads.

### Which is updated more often, Model Usage or Dev Notes++?

Model Usage ships an update every 3 days, and Dev Notes++ every 2 days. Most recently, Model Usage was updated on October 31, 2026 and Dev Notes++ on October 31, 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.*