# ARC vs Lock4Good

The clearest difference is in-app purchases: ARC at none against Lock4Good's 2. Lock4Good's advantage is update cadence (every 2 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Lock4Good sells 2 one-off in-app purchases. ARC asks for nothing beyond the download.

ARC ships an update weekly, Lock4Good every 2 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ARC | Lock4Good |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (25 ratings)](https://appshunter.io/ios/app/arc-conference-app/id6466220618/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Ad-supported | — |
| Size | 144 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Alliance for Responsible Citizenship Limited](https://appshunter.io/developer/1707096670) | [Antonius Freiherr von Strachwitz](https://appshunter.io/developer/1871912459) |

## What reviewers say

### ARC

[App page](https://appshunter.io/ios/app/arc-conference-app/id6466220618)

This conference application helps attendees connect with others, manage their personalized schedules, and organize meetings. It features QR code scanning for seamless check-in and access to information, along with interactive session discussions.

**Highlights:** Delegate networking, Personalized itinerary, Meeting organization, QR code check-in, Interactive session discussions

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

**In-app purchases:** none


### Lock4Good

[App page](https://appshunter.io/ios/app/lock4good/id6758275773)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| +5 minutes | $0.99 | one-time |
| +20 Minutes | $2.99 | one-time |


## Frequently asked questions

### Is ARC free?

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

### Is Lock4Good free?

Lock4Good is free to download, with in-app purchases available.

### Do ARC or Lock4Good have ads?

Neither ARC nor Lock4Good shows ads.

### Which is updated more often, ARC or Lock4Good?

ARC ships an update weekly, and Lock4Good every 2 days. Most recently, ARC was updated on November 3, 2026 and Lock4Good 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.*