# Bad Elf Flex — High-accuracy GNSS receivers

> Companion app for Bad Elf Flex GNSS receivers, managing settings and firmware. (iPhone/iPad app by Bad Elf, LLC..)

- Source: https://appshunter.io/ios/app/bad-elf-flex/id1486378497 (this page in markdown: same URL + `.md`)
- Developer: [Bad Elf, LLC.](https://appshunter.io/developer/391764721)
- Category: Utilities, Navigation
- Price: Free
- Rating: 3.60/5 from 14 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.5 · 32 MB
- Languages: American English
- Released: 2020-08-03
- Data updated: 2026-08-27
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/bad-elf-flex/id1486378497/reviews.md

## What is Bad Elf Flex?

This is the free companion utility app for the flexible, intuitive, and affordable Bad Elf Flex and Flex Mini GNSS receivers.
  
Designed for GIS and survey professionals, the Bad Elf Flex and Flex Mini connect to your iPhone or iPad via Bluetooth and provide high-accuracy location data to ANY and ALL field data collection apps in your workflow.

This app allows you to view the health of the Flex and Flex Mini hardware, change settings, and perform firmware updates.  For the Bad Elf Flex, the app also supports purchasing and loading Flex Tokens into the hardware for enabling hardware-based features and correction sources.  Several correction sources are supported including SBAS, RTK via NTRIP, and Atlas (L-band) satellite corrections.

Visit https://bad-elf.com/ to learn more about the Bad Elf Flex and Flex Mini GNSS receivers.

NOTES:

* This app requires a Bad Elf Flex or Flex Mini to operate.

* Our "Bad Elf GPS" companion app supports our legacy mapping-grade receivers: Bad Elf GPS Pro, GPS Pro+, Surveyor, and GPS for Lightning dongle.

* Continued use of the GPS running in the background can dramatically decrease battery life.

## Key features

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

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/bad-elf-flex/id1486378497/reviews.md

### 1/5 — Firmware wont update

*2026-08-12*

Support/chat offline

### 5/5 — Great Utility App

*2025-08-12*

Great app to use with Bad Elf GPS. Mostly use it to turn on RTK from GEODNET.

### 1/5 — Не работает

*2024-02-27*

Висит на загрузке

### 1/5 — GPS PRO is not supported

*2022-08-21*

GPS PRO still selling at Amazon is not supported.

### 5/5 — Impressive

*2020-08-08*

The Flex is giving us sub-inch horizontal accuracies even with a moderately dense tree canopy and using the integrated antenna. Using with ArcGIS Collector and Spyglass.

## Frequently asked questions about Bad Elf Flex

### What is Bad Elf Flex used for?

Bad Elf Flex is a high-accuracy GNSS receiver designed for GIS and survey professionals. It connects to iOS devices via Bluetooth to provide precise location data to various field data collection apps.

### Does Bad Elf Flex require a receiver to function?

Yes, the Bad Elf Flex companion app requires a Bad Elf Flex or Flex Mini GNSS receiver to operate. It is a utility app designed to manage and enhance the functionality of these hardware devices.

### What kind of correction sources does Bad Elf Flex support?

Bad Elf Flex supports several correction sources, including SBAS, RTK via NTRIP, and Atlas (L-band) satellite corrections. These can be enabled through the purchase and loading of Flex Tokens into the hardware.

### How often is Bad Elf Flex updated?

The latest version of Bad Elf Flex is 1.4.2, and it was last updated on August 11, 2025. This indicates a relatively recent update, suggesting ongoing support and development.

### What is the user rating for Bad Elf Flex?

Bad Elf Flex has a rating of 3.5 stars based on 11 ratings. This suggests a mixed user reception, with some users finding it effective while others may have encountered issues.

### Is Bad Elf Flex available on Android?

The Bad Elf Flex app is designed to connect to iPhone or iPad via Bluetooth. It is currently supported on iPhone, iPad, and iPod, but there is no mention of Android compatibility.

### Does Bad Elf Flex have ads?

No, Bad Elf Flex does not contain advertisements. The app is free to download and use, focusing on its utility for managing GNSS receiver hardware.

### What is the age rating for Bad Elf Flex?

Bad Elf Flex has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger individuals, and does not contain mature content.

## Version history (last 5 releases)

### 2.0.5 — 2026-08-21

This release fixes several bugs affecting correction service initialization and NTRIP source table browsing.

Recent updates:
Added HTTPS/TLS support for modern NTRIP correction services
Added NTRIP profile sharing via QR code
Improved RTK reconnect behavior with unreliable Internet connectivity

### 2.0.4 — 2026-08-14

Added HTTPS/TLS support for modern NTRIP correction services
Added NTRIP profile sharing via QR code
Improved RTK reconnect behavior with unreliable Internet connectivity
Fixed bug in correction service initialization
Fixed misc bugs

### 2.0.3 — 2026-08-12

Added HTTPS/TLS support for modern NTRIP correction services
Added NTRIP profile sharing via QR code
Improved RTK reconnect behavior with unreliable Internet connectivity
Fixed misc bugs

### 2.0.2 — 2026-05-07

What’s New in Version 2.0: Instant Accuracy, All Day Long 

This release delivers instant precision that lasts all day. For our RTK-enabled receivers, we’ve streamlined the connection process so you can get to work faster:

* New import options: Use QR codes or URLs for NTRIP credentials.
* Provider directory: Access state-managed networks or our new RTK Marketplace.
* Optimized re-connects: Stay productive with self-healing Bluetooth and corrections feeds.

With the Bad Elf Flex app, you'll have centimeter-grade accuracy within seconds of turning on your Flex or Flex Mini -- on your first day, and every day going forward.

v2.0.2: several small bug fixes

### 2.0.0 — 2026-04-30

What’s New: Instant Accuracy, All Day Long 

This release delivers instant precision that lasts all day. For our RTK-enabled receivers, we’ve streamlined the connection process so you can get to work faster:

* New Import Options: Use QR codes or URLs for NTRIP credentials.
* Expanded Directory: Access state-managed networks or our new RTK Marketplace.
* Optimized Re-Connects: Stay productive with self-healing Bluetooth and corrections.

With the Bad Elf Flex app, you'll have centimeter-grade accuracy within seconds of turning on your Flex or Flex Mini -- on your first day, and every day going forward.

## Apps similar to Bad Elf Flex

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Apglos Survey Wizard](https://appshunter.io/ios/app/apglos-survey-wizard/id1576669950) | 4.5 (2) | Free | Utilities |
| [SkyPro GPS Status Tool](https://appshunter.io/ios/app/skypro-gps-status-tool/id736543912) | 2.2 (29) | Free | Utilities |
| [ArcGIS QuickCapture](https://appshunter.io/ios/app/arcgis-quickcapture/id1451433781) | 4.3 (35) | Free | Utilities |
| [VuSitu](https://appshunter.io/ios/app/vusitu/id1448937574) | 4.9 (16) | Free | Utilities |
| [Emlid Flow](https://appshunter.io/ios/app/emlid-flow/id1463967138) | 3.8 (32) | Free | Utilities |
| [Geode Connect](https://appshunter.io/ios/app/geode-connect/id1446098695) | 3.8 (9) | Free | Utilities |

## More apps by Bad Elf, LLC.

- [Bad Elf GPS](https://appshunter.io/ios/app/bad-elf-gps/id391764718)
- [Bad Elf Wombat](https://appshunter.io/ios/app/bad-elf-wombat/id1032454944)

All apps by Bad Elf, LLC.: https://appshunter.io/developer/391764721

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*