# 字体预览 vs 温度计

The clearest difference is in-app purchases: 字体预览 at none against 温度计's 1. 字体预览 also leads on iOS requirement (7.0 vs 15.6). 温度计's advantage is update cadence (every 3 days vs every 16 months). On price, ads and device support there is nothing between them.

Both are free to download. 温度计 sells 1 one-off in-app purchase. 字体预览 asks for nothing beyond the download.

字体预览 ships an update every 16 months, 温度计 every 3 days. The most recent releases landed on November 6, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | 字体预览 | 温度计 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 days** |
| Size | 5 MB | 4 MB |
| Requires iOS | **7.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [力 彭](https://appshunter.io/developer/514969177) | [世祥 刘](https://appshunter.io/developer/1749421532) |

## What reviewers say

### 字体预览

[App page](https://appshunter.io/ios/app/id850535989)

**Features:** macOS Compatibility

**In-app purchases:** none


### 温度计

[App page](https://appshunter.io/ios/app/712/id6761700725)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 永久会员 | $0.99 | one-time |


## Frequently asked questions

### Is 字体预览 free?

字体预览 is free to download, with no in-app purchases.

### Is 温度计 free?

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

### Do 字体预览 or 温度计 have ads?

Neither 字体预览 nor 温度计 shows ads.

### Which is updated more often, 字体预览 or 温度计?

字体预览 ships an update every 16 months, and 温度计 every 3 days. Most recently, 字体预览 was updated on November 6, 2026 and 温度计 on November 9, 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.*