# Diagrams Notepad 3 vs ProVent

The clearest difference is in-app purchases: ProVent at none against Diagrams Notepad 3's 1. ProVent also leads on iOS requirement (13.0 vs 15.0). Diagrams Notepad 3's advantage is device support (4 vs 2). On price, update cadence and ads there is nothing between them.

Both are free to download. Diagrams Notepad 3 sells 1 one-off in-app purchase. ProVent asks for nothing beyond the download.

Diagrams Notepad 3 ships an update monthly, ProVent every 6 weeks. The most recent releases landed on October 22, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Diagrams Notepad 3 | ProVent |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (52 ratings)](https://appshunter.io/ios/app/diagrams-notepad-3/id1387425355/reviews)** | — |
| Number of ratings | **52** | — |
| Positive reviews | 39.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 61 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [sunata UG (haftungsbeschraenkt)](https://appshunter.io/developer/1387425354) | [Ini Ghidirmic](https://appshunter.io/developer/1832937105) |

## What reviewers say

### Diagrams Notepad 3

[App page](https://appshunter.io/ios/app/diagrams-notepad-3/id1387425355)

Create and sync diagrams, flowcharts, and mind maps across iPhone, iPad, and Mac. Supports Apple Pencil for drawing and offers collaboration features. Export in various formats.

**Highlights:** Cross-device sync via iCloud, Vector-based shapes and connectors, Apple Pencil support, Diagram sharing and collaboration, Export to PDF, PNG, JPEG, Unlimited diagram size

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited number of diagrams | $22.99 | one-time |


### ProVent

[App page](https://appshunter.io/ios/app/provent/id6753216679)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Diagrams Notepad 3 free?

Diagrams Notepad 3 is free to download, with in-app purchases available.

### Is ProVent free?

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

### Do Diagrams Notepad 3 or ProVent have ads?

Neither Diagrams Notepad 3 nor ProVent shows ads.

### Which is updated more often, Diagrams Notepad 3 or ProVent?

Diagrams Notepad 3 ships an update monthly, and ProVent every 6 weeks. Most recently, Diagrams Notepad 3 was updated on October 22, 2026 and ProVent on October 12, 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.*