# FlexAligner vs OrthoKit

The clearest difference is in-app purchases: FlexAligner at none against OrthoKit's 4. FlexAligner also leads on iOS requirement (18.6 vs 26.1). OrthoKit's advantage is device support (4 vs 2). On price, update cadence and ads there is nothing between them.

Both are free to download. OrthoKit sells 4 in-app purchases, starting at $49.00 per month. FlexAligner asks for nothing beyond the download.

FlexAligner ships an update every 5 days, OrthoKit every 11 days. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | FlexAligner | OrthoKit |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 98.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 11 days |
| Monetization | — | Free with in-app purchases |
| Size | 88 MB | 54 MB |
| Requires iOS | **18.6** | 26.1 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 17+ | 4+ |
| Developer | [FLEKSISOFT, OOO](https://appshunter.io/developer/1460576306) | [Evolved Orthodontics](https://appshunter.io/developer/1794375748) |

## What reviewers say

### FlexAligner

[App page](https://appshunter.io/ios/app/flexaligner/id1460576307)

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

**In-app purchases:** none


### OrthoKit

[App page](https://appshunter.io/ios/app/orthokit-orthodontic-app/id1508553735)

This app helps orthodontists organize patient records, perform AI-assisted cephalometric tracings, and view DICOM studies. It generates customizable reports and allows for photo management and treatment tracking. Available on Apple devices.

**Highlights:** AI-assisted cephalometric tracing, DICOM viewer and 3D reconstructions, Customizable PDF and Keynote reports, Photo organization and tracking, Patient and treatment classification, iCloud syncing for cross-device access

**Features:** iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $49.00 | per month |
| 6-month subscription | $259.00 | per 6 months |
| Annual subscription | $429.00 | per year |
| Donation | $89.99 | one-time |


## Frequently asked questions

### Is FlexAligner free?

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

### Is OrthoKit free?

OrthoKit is free to download, with in-app purchases available.

### Do FlexAligner or OrthoKit have ads?

Neither FlexAligner nor OrthoKit shows ads.

### Which is updated more often, FlexAligner or OrthoKit?

FlexAligner ships an update every 5 days, and OrthoKit every 11 days. Most recently, FlexAligner was updated on November 7, 2026 and OrthoKit on November 3, 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.*