# Radiant Forehead bat vs SAT Messenger

The clearest difference is iOS requirement: Radiant Forehead bat at 8.0 against SAT Messenger's 15.0. 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.

Radiant Forehead bat ships an update every 3 weeks, SAT Messenger every 2 weeks. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Radiant Forehead bat | SAT Messenger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/radiant-forehead-bat/id1151330620/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 31 MB | 51 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [RADIANT INNOVATION INC.](https://appshunter.io/developer/924300240) | [phwy](https://appshunter.io/developer/1687040072) |

## What reviewers say

### Radiant Forehead bat

[App page](https://appshunter.io/ios/app/radiant-forehead-bat/id1151330620)

This utility app works with a specific infrared thermometer to measure forehead temperature. It connects via the phone's jack and provides readings within seconds for quick health monitoring.

**Highlights:** Forehead temperature measurement, Works with infrared thermometer TMS, Connects via phone jack, Quick scanning function, Real-time temperature readings

**Features:** macOS Compatibility

**In-app purchases:** none


### SAT Messenger

[App page](https://appshunter.io/ios/app/sat-messenger/id6448937534)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Radiant Forehead bat free?

Radiant Forehead bat is free to download, with no in-app purchases.

### Is SAT Messenger free?

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

### Do Radiant Forehead bat or SAT Messenger have ads?

Neither Radiant Forehead bat nor SAT Messenger shows ads.

### Which is updated more often, Radiant Forehead bat or SAT Messenger?

Radiant Forehead bat ships an update every 3 weeks, and SAT Messenger every 2 weeks. Most recently, Radiant Forehead bat was updated on October 20, 2026 and SAT Messenger 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.*