# Bad Elf Flex vs bmLogger

The clearest difference is review sentiment: bmLogger at 100% against Bad Elf Flex's 40%. bmLogger also leads on rating (5.0 vs 3.6) and update cadence (every 3 days vs every 3 months). Bad Elf Flex's advantage is ratings volume (14 vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

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

bmLogger holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 14 and 4 respectively. Written reviews point the same way: 40% of Bad Elf Flex's written reviews are positive against 100% of bmLogger's.

Bad Elf Flex ships an update every 3 months, bmLogger every 3 days. The most recent releases landed on September 9, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Bad Elf Flex | bmLogger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (14 ratings)](https://appshunter.io/ios/app/bad-elf-flex/id1486378497/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/bmlogger/id6654885355/reviews)** |
| Number of ratings | **14** | 4 |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free | Free |
| Size | 32 MB | 42 MB |
| Requires iOS | 15.5 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bad Elf, LLC.](https://appshunter.io/developer/391764721) | [Blue Maestro](https://appshunter.io/developer/773672141) |

## What reviewers say

### Bad Elf Flex

[App page](https://appshunter.io/ios/app/bad-elf-flex/id1486378497)

This utility app enhances the functionality of Bad Elf Flex and Flex Mini GNSS receivers. It allows users to monitor hardware health, adjust settings, and update firmware. For the Flex model, it also enables the purchase and application of tokens for advanced features and correction sources like SBAS and RTK.

**Highlights:** Monitor GNSS receiver health, Change hardware settings, Perform firmware updates, Purchase and load Flex Tokens, Enable hardware-based features, Access correction sources

**Features:** Vision Pro support

**In-app purchases:** none


### bmLogger

[App page](https://appshunter.io/ios/app/bmlogger/id6654885355)

This app connects to Bluetooth sensors to provide real-time temperature and humidity monitoring. It allows for data logging, historical analysis, and customizable alerts for various environmental conditions. Ideal for cold chain compliance, food safety, and climate control.

**Highlights:** Real-time temperature and humidity readings, Data logging and historical graphs, CSV data export, Multiple sensor connection, Customizable alerts, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Bad Elf Flex free?

Bad Elf Flex is free to download, with no in-app purchases.

### Is bmLogger free?

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

### Which has better reviews, Bad Elf Flex or bmLogger?

bmLogger is rated higher. Bad Elf Flex averages 3.6 out of 5 from 14 ratings, while bmLogger averages 5.0 from 4 ratings.

### Do Bad Elf Flex or bmLogger have ads?

Neither Bad Elf Flex nor bmLogger shows ads.

### Which is updated more often, Bad Elf Flex or bmLogger?

Bad Elf Flex ships an update every 3 months, and bmLogger every 3 days. Most recently, Bad Elf Flex was updated on September 9, 2026 and bmLogger on September 17, 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.*