# InviSmile vs Aligner Diary

The clearest difference is in-app purchases: InviSmile at none against Aligner Diary's 3. Aligner Diary's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Aligner Diary sells 3 in-app purchases, starting at $0.99 per month. InviSmile asks for nothing beyond the download.

## The numbers

| Metric | InviSmile | Aligner Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/invismile/id6765974305/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | Free | — |
| Size | 321 MB | 47 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NIKHIL CHOWDARY NETTEM](https://appshunter.io/developer/1896147398) | [思佳 李](https://appshunter.io/developer/1835312196) |

## What reviewers say

### InviSmile

[App page](https://appshunter.io/ios/app/invismile/id6765974305)

This app helps you meticulously track the wear time of your clear dental aligners. It features a smart timer, progress visualization, and reminders to ensure you stay on schedule with your treatment. Designed for privacy, it stores data locally and requires no account.

**Highlights:** One-tap wear timer, Live countdown for daily goals, Progress rings visualization, Apple Watch companion app, Home and Lock Screen widgets, Tray management and reminders, Local data storage for privacy

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### Aligner Diary

[App page](https://appshunter.io/ios/app/aligner-diary/id6802318433)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Annual | $3.99 | per year |
| Pro Lifetime | $7.99 | one-time |


## Frequently asked questions

### Is InviSmile free?

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

### Is Aligner Diary free?

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

### Do InviSmile or Aligner Diary have ads?

Neither InviSmile nor Aligner Diary shows ads.

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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.*