# AC Key vs Pinventory

The clearest difference is rating: Pinventory at 5.0 against AC Key's 4.1. Pinventory also leads on update cadence (weekly vs every 14 months). AC Key's advantage is monetization model (free vs ad-supported) and ratings volume (16 vs 5). 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.

Pinventory holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 16 and 5 respectively.

AC Key ships an update every 14 months, Pinventory weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | AC Key | Pinventory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (16 ratings)](https://appshunter.io/ios/app/ac-key/id6447633948/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/pinventory/id6766100224/reviews)** |
| Number of ratings | **16** | 5 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 24 MB | 42 MB |
| Requires iOS | **13.4** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aiphone Corporation](https://appshunter.io/developer/964569222) | [Ed Giardina](https://appshunter.io/developer/1441736302) |

## 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


### Pinventory

[App page](https://appshunter.io/ios/app/pinventory/id6766100224)

Organize and manage your pinball machine fleet or personal collection. Track machine status, maintenance, revenue, and parts inventory. Features include location management, team access, and QR code issue reporting.

**Highlights:** Fleet dashboard with machine status, Location mapping and management, Detailed maintenance logs, Parts inventory with reorder alerts, Revenue tracking and financial reports, QR code issue reporting, Team management with roles, CSV data export

**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 Pinventory free?

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

### Which has better reviews, AC Key or Pinventory?

Pinventory is rated higher. AC Key averages 4.1 out of 5 from 16 ratings, while Pinventory averages 5.0 from 5 ratings.

### Do AC Key or Pinventory have ads?

Neither AC Key nor Pinventory shows ads.

### Which is updated more often, AC Key or Pinventory?

AC Key ships an update every 14 months, and Pinventory weekly. Most recently, AC Key was updated on October 24, 2026 and Pinventory 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.*