# Bad Elf Flex vs AI知体

The clearest difference is iOS requirement: AI知体 at 13.0 against Bad Elf Flex's 15.5. 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.

Bad Elf Flex ships an update every 2 months, AI知体 every 3 months. The most recent releases landed on October 12, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Bad Elf Flex | AI知体 |
| --- | --- | --- |
| 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 3 months |
| Monetization | Free | — |
| Size | 33 MB | 27 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Bad Elf, LLC.](https://appshunter.io/developer/391764721) | [深圳市零感数字技术有限公司](https://appshunter.io/developer/1756126057) |

## 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


### AI知体

[App page](https://appshunter.io/ios/app/ai/id6608979304)

**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 AI知体 free?

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

### Do Bad Elf Flex or AI知体 have ads?

Neither Bad Elf Flex nor AI知体 shows ads.

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

Bad Elf Flex ships an update every 2 months, and AI知体 every 3 months. Most recently, Bad Elf Flex was updated on October 12, 2026 and AI知体 on October 1, 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.*