# Retainer Timer vs Smilo

The clearest difference is rating: Smilo at 4.5 against Retainer Timer's 1.0. Smilo also leads on ratings volume (50 vs 2). Retainer Timer's advantage is in-app purchases (none vs 6) and iOS requirement (11.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

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

Smilo holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Smilo has 50 ratings behind it against 2, so its average is the more settled of the two.

Retainer Timer ships an update fortnightly, Smilo every 3 weeks. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Retainer Timer | Smilo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/retainer-timer/id1411887449/reviews) | **[4.5 (50 ratings)](https://appshunter.io/ios/app/smilo-aligner-tracker-and-timer/id6761348584/reviews)** |
| Number of ratings | 2 | **50** |
| Positive reviews | — | 37.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | **Free** | Freemium |
| Size | 42 MB | 31 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lachlan Maxwell](https://appshunter.io/developer/1411887448) | [Nabeel Akhtar Tak](https://appshunter.io/developer/1832775708) |

## What reviewers say

### Retainer Timer

[App page](https://appshunter.io/ios/app/retainer-timer/id1411887449)

This app helps users remember to put in their dental retainers or clear aligners after eating. It provides notifications and tracks daily statistics for wear time, with cloud storage for seamless device switching.

**Highlights:** Wear time reminders, Daily statistics, Cloud data storage, Device switching, Progress tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### Smilo

[App page](https://appshunter.io/ios/app/smilo-aligner-tracker-and-timer/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 Retainer Timer free?

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

### Is Smilo free?

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

### Which has better reviews, Retainer Timer or Smilo?

Smilo is rated higher. Retainer Timer averages 1.0 out of 5 from 2 ratings, while Smilo averages 4.5 from 50 ratings.

### Do Retainer Timer or Smilo have ads?

Neither Retainer Timer nor Smilo shows ads.

### Which is updated more often, Retainer Timer or Smilo?

Retainer Timer ships an update fortnightly, and Smilo every 3 weeks. Most recently, Retainer Timer was updated on November 2, 2026 and Smilo on November 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.*