# JustIN Mobile vs luca app

JustIN Mobile and luca app both sit at 4.6 stars, but that hides the real split: 48% of luca app's written reviews are positive against 25% of JustIN Mobile's. luca app also leads on update cadence (every 2 weeks vs every 6 weeks). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.6 for JustIN Mobile against 4.5 for luca app. Both are backed by a comparable volume of ratings — 4.3K and 1.9K respectively. Written reviews are what separate them: 25% of JustIN Mobile's written reviews are positive against 48% of luca app's.

JustIN Mobile ships an update every 6 weeks, luca app every 2 weeks. The most recent releases landed on October 18, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | JustIN Mobile | luca app |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (4.3K ratings)](https://appshunter.io/ios/app/justin-mobile/id960998088/reviews)** | [4.5 (1.9K ratings)](https://appshunter.io/ios/app/luca-app/id1531742708/reviews) |
| Number of ratings | **4.3K** | 1.9K |
| Positive reviews | 25.1% of reviews | **48.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 37 MB | 104 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Salto Systems](https://appshunter.io/developer/893918231) | [culture4life GmbH](https://appshunter.io/developer/1531742710) |

## What reviewers say

### JustIN Mobile

[App page](https://appshunter.io/ios/app/justin-mobile/id960998088)

This app allows users to manage building access using their smartphone. It provides digital keys for doors, elevators, and car park barriers, eliminating the need for physical keys and simplifying access control across multiple locations.

**Highlights:** Smartphone-based digital keys, Manage access to doors, elevators, barriers, Multi-site and multi-application support, Eliminates lost key issues, User-friendly interface, Store multiple digital keys

**Features:** Apple Wallet

**In-app purchases:** none

**What reviewers like**

- ⭐ Works great
- 🔑 Convenient digital key
- 🔍 Helpful widget feature

**What reviewers complain about**

- 🔌 Unreliable connectivity
- 🔒 Frequent lock-outs
- ⏱️ Slow performance
- 📱 No Apple Watch support

**Reported bugs**

- Keys randomly expire
- Widget not working on latest iOS
- Verification codes not received

**Requested features**

- Add Apple Watch app
- Integrate with Apple Wallet
- Improve guest access sharing


### luca app

[App page](https://appshunter.io/ios/app/luca-app/id1531742708)

Discover restaurants, bars, and cafes with digital access to menus and past visit history. Book reservations and enhance your social experiences with this app.

**Highlights:** Discover restaurants, bars, cafes, Access digital menus, View past visit history, Book reservations, Digital social life management

**Features:** Apple Wallet

**In-app purchases:** none

**What reviewers like**

- 👍 Easy and convenient to use
- 🚀 Quick and simple registration
- 💡 Useful for storing vaccination QR codes
- 🔒 Preserves privacy and data security

**What reviewers complain about**

- 🐛 Buggy and unreliable functionality
- ⚠️ Doesn't work with non-German phone numbers
- 🤔 Confusing and unintuitive interface
- 🔋 High battery drain

**Reported bugs**

- SMS verification code not received
- App crashes or freezes during use
- QR code scanning issues
- Incorrect check-in/check-out times displayed

**Requested features**

- Ability to manually add/edit check-in events
- Automatic check-out feature
- Support for multiple languages
- Integration with other COVID-19 tracking apps


## Frequently asked questions

### Is JustIN Mobile free?

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

### Is luca app free?

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

### Which has better reviews, JustIN Mobile or luca app?

JustIN Mobile is rated higher. JustIN Mobile averages 4.6 out of 5 from 4.3K ratings, while luca app averages 4.5 from 1.9K ratings.

### Do JustIN Mobile or luca app have ads?

Neither JustIN Mobile nor luca app shows ads.

### Which is updated more often, JustIN Mobile or luca app?

JustIN Mobile ships an update every 6 weeks, and luca app every 2 weeks. Most recently, JustIN Mobile was updated on October 18, 2026 and luca app on October 15, 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.*