# 先知 vs IdeasTick

The clearest difference is in-app purchases: 先知 at none against IdeasTick's 1. 先知 also leads on iOS requirement (12.0 vs 17.0). IdeasTick's advantage is update cadence (every 5 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. IdeasTick sells 1 one-off in-app purchase. 先知 asks for nothing beyond the download.

先知 ships an update monthly, IdeasTick every 5 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 先知 | IdeasTick |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Size | 140 MB | 1 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [克建 户](https://appshunter.io/developer/1594189009) | [佳佳 陶](https://appshunter.io/developer/1682189695) |

## What reviewers say

### 先知

[App page](https://appshunter.io/ios/app/id1594193304)

**Features:** macOS Compatibility

**In-app purchases:** none


### IdeasTick

[App page](https://appshunter.io/ios/app/ideastick/id6742816307)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| เข้าถึงได้ตลอดชีพ | $1.99 | one-time |


## Frequently asked questions

### Is 先知 free?

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

### Is IdeasTick free?

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

### Do 先知 or IdeasTick have ads?

Neither 先知 nor IdeasTick shows ads.

### Which is updated more often, 先知 or IdeasTick?

先知 ships an update monthly, and IdeasTick every 5 days. Most recently, 先知 was updated on October 27, 2026 and IdeasTick 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.*