# UCLA Oralytics vs Smile

The clearest difference is update cadence: UCLA Oralytics at every 6 weeks against Smile's every 7 months. UCLA Oralytics also leads on iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UCLA Oralytics ships an update every 6 weeks, Smile every 7 months. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | UCLA Oralytics | Smile |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 7 months |
| Size | 26 MB | 30 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [University of California, Los Angeles](https://appshunter.io/developer/498096168) | [Lonnie Terry](https://appshunter.io/developer/1833311396) |

## What reviewers say

### UCLA Oralytics

[App page](https://appshunter.io/ios/app/ucla-oralytics/id6739506994)

**Features:** macOS Compatibility

**In-app purchases:** none


### Smile

[App page](https://appshunter.io/ios/app/smile-timer/id6757202764)

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

**In-app purchases:** none


## Frequently asked questions

### Is UCLA Oralytics free?

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

### Is Smile free?

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

### Do UCLA Oralytics or Smile have ads?

Neither UCLA Oralytics nor Smile shows ads.

### Which is updated more often, UCLA Oralytics or Smile?

UCLA Oralytics ships an update every 6 weeks, and Smile every 7 months. Most recently, UCLA Oralytics was updated on October 28, 2026 and Smile on October 31, 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.*