# Notebox vs ADG Contract Pro

The clearest difference is in-app purchases: ADG Contract Pro at none against Notebox's 2. ADG Contract Pro also leads on iOS requirement (15.0 vs 17.0). Notebox's advantage is update cadence (every 2 days vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. Notebox sells 2 in-app purchases, starting at $1.49 per month. ADG Contract Pro asks for nothing beyond the download.

Notebox ships an update every 2 days, ADG Contract Pro fortnightly. The most recent releases landed on October 16, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Notebox | ADG Contract Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/notebox-encrypted/id1536532586/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Fortnightly |
| Monetization | Freemium | — |
| Size | 49 MB | 61 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guap Inc.](https://appshunter.io/developer/1439069409) | [Artisan Design Group, LLC](https://appshunter.io/developer/1513407186) |

## What reviewers say

### Notebox

[App page](https://appshunter.io/ios/app/notebox-encrypted/id1536532586)

This app offers a secure, block-based editor with Markdown support for local note-taking. For cross-device synchronization and real-time updates, a subscription unlocks cloud features with zero-knowledge encryption.

**Highlights:** Zero-knowledge encryption, Block-based editor, Markdown support, Local-only mode, Cross-device sync, Real-time updates

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Cloud Subscription | $1.49 | per month |
| Yearly Cloud Subscription | $14.99 | per year |


### ADG Contract Pro

[App page](https://appshunter.io/ios/app/adg-contract-pro/id1584211835)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Notebox free?

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

### Is ADG Contract Pro free?

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

### Do Notebox or ADG Contract Pro have ads?

Neither Notebox nor ADG Contract Pro shows ads.

### Which is updated more often, Notebox or ADG Contract Pro?

Notebox ships an update every 2 days, and ADG Contract Pro fortnightly. Most recently, Notebox was updated on October 16, 2026 and ADG Contract Pro on October 25, 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.*