# JustIN Mobile vs Preserve by MultiSync

The clearest difference is rating: Preserve by MultiSync at 5.0 against JustIN Mobile's 4.6. JustIN Mobile's advantage is ratings volume (5.2K vs 1) and iOS requirement (15.6 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Preserve by MultiSync holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: JustIN Mobile has 5.2K ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | JustIN Mobile | Preserve by MultiSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (5.2K ratings)](https://appshunter.io/ios/app/justin-mobile/id960998088/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/preserve-by-multisync/id6760274059/reviews)** |
| Number of ratings | **5.2K** | 1 |
| Positive reviews | 25.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | Free | Free |
| Size | 37 MB | 1 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Salto Systems](https://appshunter.io/developer/893918231) | [MultiSync Inc.](https://appshunter.io/developer/1435027043) |

## 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


### Preserve by MultiSync

[App page](https://appshunter.io/ios/app/preserve-by-multisync/id6760274059)

This tool assists transplant clinicians and specialists in selecting the optimal organ preservation method and device. It provides evidence-based recommendations, calculates donor risk scores, and offers outcome predictions, all while ensuring data privacy and offline functionality.

**Highlights:** Organ preservation method recommendations, Preservation device suggestions, Donor risk score calculation, Outcome predictions, Offline functionality, Pseudonymous assessment saving

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

**In-app purchases:** none


## Frequently asked questions

### Is JustIN Mobile free?

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

### Is Preserve by MultiSync free?

Preserve by MultiSync is free to download, with no in-app purchases.

### Which has better reviews, JustIN Mobile or Preserve by MultiSync?

Preserve by MultiSync is rated higher. JustIN Mobile averages 4.6 out of 5 from 5.2K ratings, while Preserve by MultiSync averages 5.0 from 1 ratings.

### Do JustIN Mobile or Preserve by MultiSync have ads?

Neither JustIN Mobile nor Preserve by MultiSync shows ads.

### Which is updated more often, JustIN Mobile or Preserve by MultiSync?

JustIN Mobile ships an update every 6 weeks, and Preserve by MultiSync every 6 weeks. Most recently, JustIN Mobile was updated on November 1, 2026 and Preserve by MultiSync 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.*