# expo vs DiagramAI

The clearest difference is in-app purchases: DiagramAI at none against expo's 8. expo's advantage is ads (none vs shown) and update cadence (monthly vs every 6 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. expo sells 6 one-off in-app purchases. DiagramAI asks for nothing beyond the download.

expo ships an update monthly, DiagramAI every 6 months. The most recent releases landed on July 7, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | expo | DiagramAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/expo-docs/id6739776586/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 6 months |
| Monetization | Free | — |
| Size | 223 MB | 149 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [山峰 唐](https://appshunter.io/developer/1786607711) | [Daniel Nowendsztern](https://appshunter.io/developer/1028876626) |

## What reviewers say

### expo

[App page](https://appshunter.io/ios/app/expo-docs/id6739776586)

Provides developers with comprehensive React Native and Expo development examples. Learn to set up projects, use Expo tools for efficiency, and master common techniques for simple or complex applications.

**Highlights:** React Native development examples, Expo tool integration, Project setup guidance, Development efficiency techniques, Common development patterns

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A Lollipop | $0.99 | one-time |
| A Chocolate Bar | $1.99 | one-time |
| A Cup of  Coffee | $2.99 | one-time |
| A Cup of Coffee | $3.99 | one-time |
| A Burger Meal | $4.99 | one-time |
| RN Docs | $4.99 | one-time |


### DiagramAI

[App page](https://appshunter.io/ios/app/diagramai/id6758946256)

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

**In-app purchases:** none


## Frequently asked questions

### Is expo free?

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

### Is DiagramAI free?

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

### Do expo or DiagramAI have ads?

DiagramAI shows ads; expo does not.

### Which is updated more often, expo or DiagramAI?

expo ships an update monthly, and DiagramAI every 6 months. Most recently, expo was updated on July 7, 2026 and DiagramAI on September 18, 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.*