# IoT Meter vs 改字猫

The clearest difference is in-app purchases: IoT Meter at none against 改字猫's 3. IoT Meter also leads on iOS requirement (13.0 vs 15). 改字猫's advantage is update cadence (every 3 days vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. 改字猫 sells 3 in-app purchases, starting at $4.99 per 7 days. IoT Meter asks for nothing beyond the download.

IoT Meter ships an update every 6 weeks, 改字猫 every 3 days. The most recent releases landed on October 22, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | IoT Meter | 改字猫 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/iot-meter/id6503274829/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Monetization | Free | — |
| Size | 35 MB | 8 MB |
| Requires iOS | **13.0** | 15 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Ensightful Limited](https://appshunter.io/developer/1748706678) | [江帅 杨](https://appshunter.io/developer/6802702510) |

## What reviewers say

### IoT Meter

[App page](https://appshunter.io/ios/app/iot-meter/id6503274829)

Connects to smart measuring devices via Bluetooth to manage device status and read data. Organizes readings into projects, generates data tables, and allows cloud uploads. Supports capturing images for each data batch.

**Highlights:** Bluetooth device connection, Device status management, Data reading and logging, Project-based data organization, Data table generation, Cloud data upload, Image capture for data batches

**In-app purchases:** none


### 改字猫

[App page](https://appshunter.io/ios/app/id6803838346)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员 | $4.99 | per 7 days |
| 月会员 | $9.99 | per month |
| 年会员 | $19.99 | per year |


## Frequently asked questions

### Is IoT Meter free?

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

### Is 改字猫 free?

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

### Do IoT Meter or 改字猫 have ads?

Neither IoT Meter nor 改字猫 shows ads.

### Which is updated more often, IoT Meter or 改字猫?

IoT Meter ships an update every 6 weeks, and 改字猫 every 3 days. Most recently, IoT Meter was updated on October 22, 2026 and 改字猫 on October 10, 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.*