# 理旦 vs FlashIdea

The clearest difference is price: 理旦 at Free against FlashIdea's $0.99. FlashIdea's advantage is in-app purchases (none vs 2) and device support (4 vs 1). On update cadence, ads and iOS requirement there is nothing between them.

理旦 is free to download; FlashIdea costs $0.99 up front. 理旦 sells 2 in-app purchases, starting at $2.99 per month. FlashIdea asks for nothing beyond the download.

理旦 ships an update every 5 days, FlashIdea every 4 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | 理旦 | FlashIdea |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 4 days** |
| Size | 108 MB | 44 MB |
| Requires iOS | **17** | 18.0 |
| Devices | iPhone | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Yuanzidan Technology (chengdu) Co., Ltd](https://appshunter.io/developer/1879746735) | [Beijing Jiewai Fuxian Technology Co., Ltd.](https://appshunter.io/developer/6791387423) |

## What reviewers say

### 理旦

[App page](https://appshunter.io/ios/app/id6791475343)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 理旦月度会员 | $2.99 | per month |
| 理旦加油包 | $2.99 | one-time |


### FlashIdea

[App page](https://appshunter.io/ios/app/flashidea/id6820398112)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 理旦 free?

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

### Is FlashIdea free?

FlashIdea costs $0.99, with no in-app purchases.

### Do 理旦 or FlashIdea have ads?

Neither 理旦 nor FlashIdea shows ads.

### Which is updated more often, 理旦 or FlashIdea?

理旦 ships an update every 5 days, and FlashIdea every 4 days. Most recently, 理旦 was updated on October 31, 2026 and FlashIdea on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*