# Lens Manager vs Smile Detection

The clearest difference is in-app purchases: Smile Detection at none against Lens Manager's 5. Lens Manager's advantage is iOS requirement (15.0 vs 17.7.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Lens Manager sells 5 in-app purchases, starting at $4.49 per month. Smile Detection asks for nothing beyond the download.

Lens Manager ships an update every 4 weeks, Smile Detection every 2 weeks. The most recent releases landed on October 25, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Lens Manager | Smile Detection |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lens-manager/id6470110511/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 65 MB | 35 MB |
| Requires iOS | **15.0** | 17.7.2 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Yuichi Ishibashi](https://appshunter.io/developer/1712989739) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Lens Manager

[App page](https://appshunter.io/ios/app/lens-manager/id6470110511)

Never forget your contact lens replacement day again. This app provides smart reminders and tracking for 1-week, 2-week, and 1-month lenses, with options for separate tracking per eye. Premium features offer advanced reminders and home screen widgets.

**Highlights:** Contact lens replacement schedule tracking, Replacement day reminder notifications, Separate tracking for left and right lenses, Supports 1-week, 2-week, and 1-month lenses, Home screen widget, Contact lens information management

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Plan | $4.49 | per month |
| Premium Annual Plan | $29.99 | per year |
| Support the app | $2.99 | one-time |
| Support the app | $5.99 | one-time |
| Support the app | $19.99 | one-time |


### Smile Detection

[App page](https://appshunter.io/ios/app/smile-detection/id6504737013)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lens Manager free?

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

### Is Smile Detection free?

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

### Do Lens Manager or Smile Detection have ads?

Both Lens Manager and Smile Detection show ads.

### Which is updated more often, Lens Manager or Smile Detection?

Lens Manager ships an update every 4 weeks, and Smile Detection every 2 weeks. Most recently, Lens Manager was updated on October 25, 2026 and Smile Detection on October 20, 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.*