# Fixu vs Retainly

The clearest difference is in-app purchases: Fixu at none against Retainly's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Retainly sells 1 one-off in-app purchase. Fixu asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Fixu | Retainly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/fixu-aligner-tracker/id6760597289/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Ad-supported | — |
| Size | 42 MB | 64 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [NICOLAS GABRIEL CORDES](https://appshunter.io/developer/1885218818) | [Glenn Francis](https://appshunter.io/developer/1875693789) |

## What reviewers say

### Fixu

[App page](https://appshunter.io/ios/app/fixu-aligner-tracker/id6760597289)

This app helps users track their dental aligner wear time with a simple tap. It monitors daily compliance, builds streaks, and provides smart reminders. Users can also document their smile journey with photos and track their full treatment plan.

**Highlights:** One-tap aligner tracking, Real-time compliance percentage, Treatment plan timeline, Progress photos and comparison, Smart wear reminders, Monthly compliance calendar, Home screen widget

**In-app purchases:** none


### Retainly

[App page](https://appshunter.io/ios/app/retainly-retainer-tracker/id6773165727)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $9.99 | one-time |


## Frequently asked questions

### Is Fixu free?

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

### Is Retainly free?

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

### Do Fixu or Retainly have ads?

Neither Fixu nor Retainly shows ads.

### Which is updated more often, Fixu or Retainly?

Fixu ships an update weekly, and Retainly weekly. Most recently, Fixu was updated on October 16, 2026 and Retainly on October 15, 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.*