# 天信低空通 vs StudioTimer

The clearest difference is in-app purchases: 天信低空通 at none against StudioTimer's 2. 天信低空通 also leads on iOS requirement (13.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. StudioTimer sells 2 in-app purchases, starting at $0.99 per month. 天信低空通 asks for nothing beyond the download.

天信低空通 ships an update every 2 weeks, StudioTimer every 9 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 天信低空通 | StudioTimer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/id6745680335/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Size | 57 MB | 4 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [北京中科星图维天信线上科技有限公司](https://appshunter.io/developer/1742700011) | [聪 毕](https://appshunter.io/developer/1869023871) |

## What reviewers say

### 天信低空通

[App page](https://appshunter.io/ios/app/id6745680335)

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

**In-app purchases:** none


### StudioTimer

[App page](https://appshunter.io/ios/app/studiotimer-time-billing-pro/id6757833386)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StudioTimer Pro Monthly | $0.99 | per month |
| StudioTimer Pro | $9.99 | one-time |


## Frequently asked questions

### Is 天信低空通 free?

天信低空通 is free to download, with no in-app purchases.

### Is StudioTimer free?

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

### Do 天信低空通 or StudioTimer have ads?

Neither 天信低空通 nor StudioTimer shows ads.

### Which is updated more often, 天信低空通 or StudioTimer?

天信低空通 ships an update every 2 weeks, and StudioTimer every 9 days. Most recently, 天信低空通 was updated on October 24, 2026 and StudioTimer on October 25, 2026.

---

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