# Smile vs ZenO Data

The clearest difference is in-app purchases: ZenO Data at none against Smile's 4. ZenO Data also leads on update cadence (every 4 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Smile sells 4 in-app purchases, starting at $4.99 per 7 days. ZenO Data asks for nothing beyond the download.

Smile ships an update every 3 weeks, ZenO Data every 4 days. The most recent releases landed on September 17, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Smile | ZenO Data |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 37 MB | 14 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Muhammet Furkan DOGAN](https://appshunter.io/developer/1840494880) | [ZENOLABS INC](https://appshunter.io/developer/6776562735) |

## What reviewers say

### Smile

[App page](https://appshunter.io/ios/app/smile-perfect-teeth-fix/id6761668190)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pack | $4.99 | per 7 days |
| Pro Pack | $14.99 | per month |
| Pro Elite Pack | $29.99 | per month |
| 15 Credits | $4.99 | one-time |


### ZenO Data

[App page](https://appshunter.io/ios/app/zeno-data/id6776562733)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smile free?

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

### Is ZenO Data free?

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

### Do Smile or ZenO Data have ads?

Neither Smile nor ZenO Data shows ads.

### Which is updated more often, Smile or ZenO Data?

Smile ships an update every 3 weeks, and ZenO Data every 4 days. Most recently, Smile was updated on September 17, 2026 and ZenO Data on September 12, 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.*