# Bluetooth DMM vs Thermal P2

The clearest difference is monetization model: Bluetooth DMM at free against Thermal P2's paid. Bluetooth DMM also leads on rating (2.5 vs 2.0) and iOS requirement (9.0 vs 11.0). Thermal P2's advantage is ratings volume (29 vs 4) and review sentiment (11% vs 0%). 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.

Bluetooth DMM holds the better App Store score, 2.5 against 2.0. That said, the two scores are not equally well evidenced: Thermal P2 has 29 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 0% of Bluetooth DMM's written reviews are positive against 11% of Thermal P2's, so the app with the better star average is not the one people write more warmly about.

Bluetooth DMM ships an update every 2 weeks, Thermal P2 fortnightly. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Bluetooth DMM | Thermal P2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (4 ratings)](https://appshunter.io/ios/app/bluetooth-dmm/id1507743438/reviews)** | [2.0 (29 ratings)](https://appshunter.io/ios/app/thermal-p2/id6446384113/reviews) |
| Number of ratings | 4 | **29** |
| Positive reviews | 0.0% of reviews | **10.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Fortnightly** |
| Monetization | **Free** | Paid |
| Size | 44 MB | 19 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [德 李](https://appshunter.io/developer/1529841015) | [Raysen Microsystem Technology Co., Ltd.](https://appshunter.io/developer/1738384120) |

## What reviewers say

### Bluetooth DMM

[App page](https://appshunter.io/ios/app/bluetooth-dmm/id1507743438)

Connect to a Bluetooth multimeter to streamline measurements, record and visualize data, and share insights. This app also offers a platform for industry communication and basic knowledge sharing.

**Highlights:** Bluetooth multimeter connection, Data recording and graphing, Data sharing and export, Threshold alarms, Connect up to four multimeters, Smart calculation functions, Remote assistance and monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### Thermal P2

[App page](https://appshunter.io/ios/app/thermal-p2/id6446384113)

This professional thermal camera connects to your smartphone for plug-and-play temperature measurement. It's ideal for both personal and industrial use, from inspecting household utilities to diagnosing equipment issues.

**Highlights:** Ultra-small professional thermal camera, 12μm high-performance infrared detector, Self-developed ASIC chip, Compact size, lightweight, low power consumption, Plug-and-play smartphone connection, Accurate temperature measurement, Heat map analysis

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bluetooth DMM free?

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

### Is Thermal P2 free?

Thermal P2 is free to download, with no in-app purchases.

### Which has better reviews, Bluetooth DMM or Thermal P2?

Bluetooth DMM is rated higher. Bluetooth DMM averages 2.5 out of 5 from 4 ratings, while Thermal P2 averages 2.0 from 29 ratings.

### Do Bluetooth DMM or Thermal P2 have ads?

Neither Bluetooth DMM nor Thermal P2 shows ads.

### Which is updated more often, Bluetooth DMM or Thermal P2?

Bluetooth DMM ships an update every 2 weeks, and Thermal P2 fortnightly. Most recently, Bluetooth DMM was updated on October 12, 2026 and Thermal P2 on October 24, 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.*