Comparison

JustIN Mobile vs luca app

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

JustIN Mobile

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
Read full description

Salto JustIN Mobile access technology simplifies the users and dynamic key management process of users in a building. Receiving a key generated electronically on their smartphone, previously identified and authorized by the system, they can unlock the assigned doors from the JustIN Mobile app by selecting the appropriate key. Technologically cutting-edge, JustIN Mobile means the end of lost key hassles, expenses and waste. Plus, the technology isn't limited to one building or hotel room - it can also be used by staff and users on multiple sites for any kind of access types like main entrance doors, elevators, car park barriers, meeting rooms, etc. Combined with user-convenient features such as user friendly design or multi key possibilities to use the same app in different buildings, locations and for different applications, JustIN Mobile access control technology simplifies card issuing, fob and traditional PIN code management that can be lost, forgotten or broken by offering flexibility for diverse applications. People do not forget their phones as they forget their keys and, if lost, they are replaced rapidly. This is a major benefit for administrators, clients, and users. About Salto Systems: Salto is a leading global access solutions provider, part of the SALTO WECOSYSTEM. We develop pioneering facility access, identity management and electronic locking technology that ensures seamless, reliable and secure experiences. Through close customer relationships and innovative solutions, our global team of experts create timeless and meaningful products that positively impact people and planet. Stay connected with @saltosystems Salto Systems never ceases to improve! Stay tuned to our social networks to discover the features included in the new version of our JustIN Mobile app. No more hard decisions to make! You can now save multiple digital keys and access different premises with the new version of JustIN. @saltosystems #JustIN #AccessControl

About

luca app

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
Read full description

Luca helps you to digitally shape your social life. You can use luca to discover restaurants, bars and cafés as well as access additional information such as menus. You can also access an overview of your past visits. For individual locations, the app can perform other functions. For example, reservations can be booked. Luca was designed and established in Germany. We are working to make luca available in other countries soon.

Screenshots

JustIN Mobile4 screens
luca app4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
JustIN Mobile versus luca app: the parameters behind the verdict, then further details
ParameterJustIN Mobileluca app
PriceFreeFree
Rating4.6 (4.3K ratings) — better4.5 (1.9K ratings)
Positive reviews25.1% of reviews48.5% of reviews — better
Number of ratings4.3K — better1.9K
Update frequencyEvery 6 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size37 MB104 MB
Age rating4+4+
DeveloperSalto Systemsculture4life GmbH

Customer experience

JustIN Mobile

All ratings4,266 ratings
Positive90.4%
Neutral2.5%
Negative7.2%
Written reviews291 reviews
Positive25.1%
Neutral14.8%
Negative60.1%

luca app

All ratings1,910 ratings
Positive86.1%
Neutral4.9%
Negative9.0%
Written reviews130 reviews
Positive48.5%
Neutral5.4%
Negative46.2%

User reviews

JustIN Mobile

From 4.3K App Store ratings

What we love

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

Room to improve

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

luca app

From 1.9K App Store ratings

What we love

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

Room to improve

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

Bugs and requests

JustIN Mobile

Reported bugs

3 issues
  • Keys randomly expire
  • Widget not working on latest iOS
  • Verification codes not received

Requested features

3 requests
  • Add Apple Watch app
  • Integrate with Apple Wallet
  • Improve guest access sharing

luca app

Reported bugs

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

Requested features

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

In-app purchases

None

JustIN Mobile

No in-app purchases

None

luca app

No in-app purchases

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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