# Radefy Guest vs 507Athens

The clearest difference is update cadence: Radefy Guest at every 2 months against 507Athens's every 8 months. 507Athens's advantage is iOS requirement (11.0 vs 15.1). 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.

Radefy Guest ships an update every 2 months, 507Athens every 8 months. The most recent releases landed on October 21, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Radefy Guest | 507Athens |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Free | — |
| Size | 30 MB | 92 MB |
| Requires iOS | 15.1 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Athanasios Piliounis](https://appshunter.io/developer/1520392597) | [Eurotel Hospitality SA](https://appshunter.io/developer/1474686035) |

## What reviewers say

### Radefy Guest

[App page](https://appshunter.io/ios/app/radefy-guest/id1520392355)

Access your booked accommodation, like hotels or hostels, using your smartphone. After a security check, the app activates at check-in time to unlock main entrances and your specific room door. You can also manually enter a PIN on the lock keypad.

**Highlights:** Unlock hotel and apartment doors, Manual PIN entry option, App activates at check-in time, Secure access via SMS code, Deactivates after check-out

**In-app purchases:** none


### 507Athens

[App page](https://appshunter.io/ios/app/507athens/id6448794792)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Radefy Guest free?

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

### Is 507Athens free?

507Athens is free to download, with no in-app purchases.

### Do Radefy Guest or 507Athens have ads?

Neither Radefy Guest nor 507Athens shows ads.

### Which is updated more often, Radefy Guest or 507Athens?

Radefy Guest ships an update every 2 months, and 507Athens every 8 months. Most recently, Radefy Guest was updated on October 21, 2026 and 507Athens on October 11, 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.*