JustIN Mobile vs WSO Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
WSO Mobile
This app serves as a central hub for students, offering quick access to daily messages, dining hall information, and essential campus resources. It integrates with existing student services for on-the-go access.
- Daily messages access
- Dining menus and times
- WSO integration (Facebook, Factrak)
- Campus resource links
- Student-built by Williams students
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WSO Mobile hopes to be your one stop shop for all things Williams! It is built by students, for students as part of Williams Students Online! - Visit Daily Messages everyday in a dedicated and easily accessible tab. - Instant access to dining menus and dining hall times. - WSO integration so you can use Facebook and Factrak on the go. - Dedicated resource tab with quick links to most things you'll need at Williams.
Screenshots
Verdict
The clearest difference is update cadence: WSO Mobile at every 6 days against JustIN Mobile's every 6 weeks. WSO Mobile also leads on rating (5.0 vs 4.6) and iOS requirement (11.0 vs 15.6). JustIN Mobile's advantage is ratings volume (5.1K vs 27). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
WSO Mobile holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: JustIN Mobile has 5.1K ratings behind it against 27, so its average is the more settled of the two.
JustIN Mobile ships an update every 6 weeks, WSO Mobile every 6 days. Both last shipped on October 24, 2026.
| Parameter | JustIN Mobile | WSO Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (5.1K ratings) | 5.0 (27 ratings) — better |
| Positive reviews | 25.1% of reviews | — |
| Number of ratings | 5.1K — better | 27 |
| Update frequency | Every 6 weeks | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 37 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Salto Systems | Charlie Tharas |
Customer experience
JustIN Mobile
WSO Mobile
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
WSO Mobile
Not enough reviews yet to summarise bugs or requests.
In-app purchases
JustIN Mobile
No in-app purchases
WSO Mobile
No in-app purchases









