# Bad Elf Flex vs Kor Mobile

The clearest difference is update cadence: Bad Elf Flex at every 2 months against Kor Mobile's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Bad Elf Flex ships an update every 2 months, Kor Mobile every 4 months. The most recent releases landed on September 26, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Bad Elf Flex | Kor Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (14 ratings)](https://appshunter.io/ios/app/bad-elf-flex/id1486378497/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | — |
| Size | 33 MB | 41 MB |
| Requires iOS | 15.5 | **14.5** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bad Elf, LLC.](https://appshunter.io/developer/391764721) | [Xylem Inc.](https://appshunter.io/developer/582035368) |

## 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


### Kor Mobile

[App page](https://appshunter.io/ios/app/kor-mobile/id6452316081)

**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 Kor Mobile free?

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

### Do Bad Elf Flex or Kor Mobile have ads?

Neither Bad Elf Flex nor Kor Mobile shows ads.

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

Bad Elf Flex ships an update every 2 months, and Kor Mobile every 4 months. Most recently, Bad Elf Flex was updated on September 26, 2026 and Kor Mobile on September 18, 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.*