# RDTTool vs TempPro Sensor

The clearest difference is iOS requirement: RDTTool at 9.0 against TempPro Sensor's 13.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RDTTool ships an update monthly, TempPro Sensor every 2 months. The most recent releases landed on October 3, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | RDTTool | TempPro Sensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (11K ratings)](https://appshunter.io/ios/app/temppro-sensor/id1542573749/reviews)** |
| Number of ratings | — | **11K** |
| Positive reviews | — | 46.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | — | Free |
| Size | 18 MB | 37 MB |
| Requires iOS | **9.0** | 13.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Radiance Instruments Ltd](https://appshunter.io/developer/1239283044) | [iTronics Co., Limited](https://appshunter.io/developer/1482729699) |

## What reviewers say

### RDTTool

[App page](https://appshunter.io/ios/app/rdttool/id1441094724)

**Features:** macOS Compatibility

**In-app purchases:** none


### TempPro Sensor

[App page](https://appshunter.io/ios/app/temppro-sensor/id1542573749)

Monitor real-time temperature and humidity with historical data up to one year. Receive alerts when readings fall outside your set range, ensuring optimal conditions.

**Highlights:** Real-time temperature display, Real-time humidity display, Heat index display, Historical data up to one year, Customizable alarm function

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Accurate temperature and humidity readings
- 👍 Easy to use app
- 🚀 Quick sensor connection
- 👍 Helpful for monitoring environments

**What reviewers complain about**

- 🐛 Devices disappear from app after closing
- 🐛 Frequent app crashes
- 🐛 Sensor data not saving properly
- 🐛 Buggy app updates
- 🔋 Short battery life for sensors

**Reported bugs**

- App unable to reconnect to sensors after closing
- Temperature and humidity history data not displaying correctly
- Sensor discovery issues after app updates

**Requested features**

- Add ability to export data to CSV
- Improve notification system to send alerts even when app is closed
- Add option to change sensor names
- Improve graph functionality to show more detailed historical data


## Frequently asked questions

### Is RDTTool free?

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

### Is TempPro Sensor free?

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

### Do RDTTool or TempPro Sensor have ads?

Neither RDTTool nor TempPro Sensor shows ads.

### Which is updated more often, RDTTool or TempPro Sensor?

RDTTool ships an update monthly, and TempPro Sensor every 2 months. Most recently, RDTTool was updated on October 3, 2026 and TempPro Sensor on October 13, 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.*