# Overkill Solar vs Temp Master

The clearest difference is review sentiment: Overkill Solar at 100% against Temp Master's 40%. Overkill Solar also leads on rating (4.7 vs 3.2). Temp Master's advantage is update cadence (every 5 weeks vs every 4 months) and iOS requirement (11.0 vs 13.4). On price, ratings volume, 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.

Overkill Solar holds the better App Store score, 4.7 against 3.2. Both are backed by a comparable volume of ratings — 16 and 12 respectively. Written reviews point the same way: 100% of Overkill Solar's written reviews are positive against 40% of Temp Master's.

Overkill Solar ships an update every 4 months, Temp Master every 5 weeks. The most recent releases landed on August 18, 2026 and August 9, 2026 respectively.

## The numbers

| Metric | Overkill Solar | Temp Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (16 ratings)](https://appshunter.io/ios/app/overkill-solar/id6444233824/reviews)** | [3.2 (12 ratings)](https://appshunter.io/ios/app/temp-master/id6737321665/reviews) |
| Number of ratings | **16** | 12 |
| Positive reviews | **100.0% of reviews** | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 21 MB | 43 MB |
| Requires iOS | 13.4 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Overkill Solar LLC](https://appshunter.io/developer/1653276724) | [Thermal Master Technology Co.,Ltd.](https://appshunter.io/developer/1770222118) |

## What reviewers say

### Overkill Solar

[App page](https://appshunter.io/ios/app/overkill-solar/id6444233824)

This app connects to a solar battery management system to provide detailed monitoring and control. Users can track cell voltage, capacity, current, and manage charging/discharging ports. It also offers advanced configuration options for calibration, balancing, and protection settings.

**Highlights:** Monitor cell voltage and capacity, Control charging and discharging ports, Calibrate voltage and current, Configure balancer and protection values, Log voltage, current, and power, Monitor BMS alarms and temperature

**Features:** macOS Compatibility

**In-app purchases:** none


### Temp Master

[App page](https://appshunter.io/ios/app/temp-master/id6737321665)

This utility app enhances thermal imaging capabilities for compatible Thermal Master devices, offering precise temperature detection and advanced image analysis. It allows users to view, save, and export thermal data offline, with features like digital zoom and improved resolution for various inspection tasks.

**Highlights:** High-accuracy temperature detection, Enhanced infrared resolution, Offline data viewing and export, Up to 15x digital zoom, Reduced background noise, Long battery life optimization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Overkill Solar free?

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

### Is Temp Master free?

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

### Which has better reviews, Overkill Solar or Temp Master?

Overkill Solar is rated higher. Overkill Solar averages 4.7 out of 5 from 16 ratings, while Temp Master averages 3.2 from 12 ratings.

### Do Overkill Solar or Temp Master have ads?

Neither Overkill Solar nor Temp Master shows ads.

### Which is updated more often, Overkill Solar or Temp Master?

Overkill Solar ships an update every 4 months, and Temp Master every 5 weeks. Most recently, Overkill Solar was updated on August 18, 2026 and Temp Master on August 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.*