# Fastoo vs Aligner Tracker

The clearest difference is review sentiment: Fastoo at 100% against Aligner Tracker's 33%. Fastoo also leads on in-app purchases (none vs 6) and iOS requirement (12.0 vs 17.0). Aligner Tracker's advantage is update cadence (fortnightly vs every 41 months). On price, ads and device support there is nothing between them.

Both are free to download. Aligner Tracker sells 6 in-app purchases, starting at $4.99 per 7 days. Fastoo asks for nothing beyond the download.

Fastoo ships an update every 41 months, Aligner Tracker fortnightly. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Fastoo | Aligner Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (30 ratings)](https://appshunter.io/ios/app/aligner-tracker-smilo/id6761348584/reviews)** |
| Number of ratings | — | **30** |
| Positive reviews | **100.0% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 41 months | **Fortnightly** |
| Monetization | **Free** | Freemium |
| Size | 8 MB | 26 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SoulBook Pty Ltd](https://appshunter.io/developer/1381345619) | [Nabeel Akhtar Tak](https://appshunter.io/developer/1832775708) |

## What reviewers say

### Fastoo

[App page](https://appshunter.io/ios/app/fastoo/id1381345620)

This app guides users through intermittent fasting routines to promote fitness and well-being. It also includes a timer for mindful breathing exercises to help reduce stress and improve mental health.

**Highlights:** Intermittent fasting tracking, Weekly fasting reminders, Mindful breathing timer, Stress reduction exercises, Mental health support

**Features:** macOS Compatibility

**In-app purchases:** none


### Aligner Tracker

[App page](https://appshunter.io/ios/app/aligner-tracker-smilo/id6761348584)

Effortlessly track your clear aligner wear time, manage trays, and monitor your smile's progress. This app offers a guided camera for consistent progress photos and smart reminders tailored to your treatment.

**Highlights:** Wear time tracking with progress ring, Tray management and switch reminders, Guided camera for progress photos, Smart, context-aware reminders, Compliance calendar with streak counter, Home screen widgets for glanceable info, Tray care logging

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Smilo Pro Weekly | $4.99 | per 7 days |
| Smilo Pro Monthly | $7.99 | per month |
| Smilo Premium Weekly | $9.99 | per 7 days |
| Smilo Premium Monthly | $19.99 | per month |
| Smilo Pro Yearly | $49.99 | per year |
| Smilo Premium Yearly | $99.99 | per year |


## Frequently asked questions

### Is Fastoo free?

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

### Is Aligner Tracker free?

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

### Do Fastoo or Aligner Tracker have ads?

Neither Fastoo nor Aligner Tracker shows ads.

### Which is updated more often, Fastoo or Aligner Tracker?

Fastoo ships an update every 41 months, and Aligner Tracker fortnightly. Most recently, Fastoo was updated on October 7, 2026 and Aligner Tracker on October 5, 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.*