# FlexWheeler Development System vs Orthero Aligner

The clearest difference is in-app purchases: Orthero Aligner at none against FlexWheeler Development System's 1. Orthero Aligner also leads on update cadence (fortnightly vs every 50 months). FlexWheeler Development System's advantage is iOS requirement (13.4 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. FlexWheeler Development System sells 1 one-off in-app purchase. Orthero Aligner asks for nothing beyond the download.

FlexWheeler Development System ships an update every 50 months, Orthero Aligner fortnightly. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | FlexWheeler Development System | Orthero Aligner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 50 months | **Fortnightly** |
| Size | 25 MB | 44 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [The GOAT 33, Inc.](https://appshunter.io/developer/1550536576) | [Orthero](https://appshunter.io/developer/1847871801) |

## What reviewers say

### FlexWheeler Development System

[App page](https://appshunter.io/ios/app/flexwheeler-development-system/id1550536574)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Training and Nutrition Package | $299.99 | one-time |


### Orthero Aligner

[App page](https://appshunter.io/ios/app/orthero-aligner/id6754326157)

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

**In-app purchases:** none


## Frequently asked questions

### Is FlexWheeler Development System free?

FlexWheeler Development System is free to download, with in-app purchases available.

### Is Orthero Aligner free?

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

### Do FlexWheeler Development System or Orthero Aligner have ads?

Neither FlexWheeler Development System nor Orthero Aligner shows ads.

### Which is updated more often, FlexWheeler Development System or Orthero Aligner?

FlexWheeler Development System ships an update every 50 months, and Orthero Aligner fortnightly. Most recently, FlexWheeler Development System was updated on November 7, 2026 and Orthero Aligner on October 30, 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.*