# AC Key vs TheSmartNotebook App

The clearest difference is rating: AC Key at 4.1 against TheSmartNotebook App's 1.0. AC Key also leads on ratings volume (16 vs 2). TheSmartNotebook App's advantage is update cadence (every 2 weeks vs every 14 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

AC Key holds the better App Store score, 4.1 against 1.0. That said, the two scores are not equally well evidenced: AC Key has 16 ratings behind it against 2, so its average is the more settled of the two.

AC Key ships an update every 14 months, TheSmartNotebook App every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | AC Key | TheSmartNotebook App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (16 ratings)](https://appshunter.io/ios/app/ac-key/id6447633948/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/thesmartnotebook-app/id6744987479/reviews) |
| Number of ratings | **16** | 2 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 24 MB | 46 MB |
| Requires iOS | **13.4** | 14.0.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aiphone Corporation](https://appshunter.io/developer/964569222) | [Virtual-Tec](https://appshunter.io/developer/498369221) |

## What reviewers say

### AC Key

[App page](https://appshunter.io/ios/app/ac-key/id6447633948)

This app allows you to unlock doors using your smartphone, eliminating the need for physical credentials. It offers an easy-to-use interface for quick access and enables temporary access for visitors.

**Highlights:** Unlock doors with smartphone, Replace physical credentials, Grant temporary visitor access, Customizable access duration and usage, Easy user registration, Visitor credentials do not require app installation

**Features:** macOS Compatibility

**In-app purchases:** none


### TheSmartNotebook App

[App page](https://appshunter.io/ios/app/thesmartnotebook-app/id6744987479)

Scan handwritten notes to create digital, searchable documents. Organize and share your notes instantly to cloud storage with smart shortcuts. Enjoy the freedom of handwriting with digital efficiency.

**Highlights:** Scan handwritten notes, Digital note storage, OCR text search, Organize and share notes, Cloud storage integration, Quick sharing shortcuts

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

**In-app purchases:** none


## Frequently asked questions

### Is AC Key free?

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

### Is TheSmartNotebook App free?

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

### Which has better reviews, AC Key or TheSmartNotebook App?

AC Key is rated higher. AC Key averages 4.1 out of 5 from 16 ratings, while TheSmartNotebook App averages 1.0 from 2 ratings.

### Do AC Key or TheSmartNotebook App have ads?

Neither AC Key nor TheSmartNotebook App shows ads.

### Which is updated more often, AC Key or TheSmartNotebook App?

AC Key ships an update every 14 months, and TheSmartNotebook App every 2 weeks. Most recently, AC Key was updated on October 24, 2026 and TheSmartNotebook App on October 24, 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.*