# Orange vs Sumflash

The clearest difference is ads: Orange at none against Sumflash's shown. Orange also leads on device support (3 vs 1) and iOS requirement (15.5 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Orange sells 3 in-app purchases, starting at $9.99 per month and Sumflash sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Orange ships an update every 5 days, Sumflash every 3 days. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Orange | Sumflash |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | **Every 3 days** |
| Size | 290 MB | 14 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Abdelrahman Amr Elprince Sayed Shalaby](https://appshunter.io/developer/1895448431) | [Toru Fukui](https://appshunter.io/developer/1888097145) |

## What reviewers say

### Orange

[App page](https://appshunter.io/ios/app/orange-chinese-study-tools/id6763706109)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Orange Plus | $9.99 | per month |
| Orange Plus | $49.99 | per 6 months |
| Orange Plus | $89.99 | per year |


### Sumflash

[App page](https://appshunter.io/ios/app/sumflash-mental-math-flash/id6816003975)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $1.99 | per month |


## Frequently asked questions

### Is Orange free?

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

### Is Sumflash free?

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

### Do Orange or Sumflash have ads?

Sumflash shows ads; Orange does not.

### Which is updated more often, Orange or Sumflash?

Orange ships an update every 5 days, and Sumflash every 3 days. Most recently, Orange was updated on October 10, 2026 and Sumflash on October 6, 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.*