# JustIN Mobile vs Shamir Spark™ Remote

The clearest difference is update cadence: JustIN Mobile at every 6 weeks against Shamir Spark™ Remote's every 3 months. 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.

JustIN Mobile ships an update every 6 weeks, Shamir Spark™ Remote every 3 months. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | JustIN Mobile | Shamir Spark™ Remote |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5.2K ratings)](https://appshunter.io/ios/app/justin-mobile/id960998088/reviews)** | — |
| Number of ratings | **5.2K** | — |
| Positive reviews | 25.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free | — |
| Size | 37 MB | 8 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Salto Systems](https://appshunter.io/developer/893918231) | [Shamir Optical Industry LTD.](https://appshunter.io/developer/1319806131) |

## 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


### Shamir Spark™ Remote

[App page](https://appshunter.io/ios/app/shamir-spark-remote/id1661601966)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JustIN Mobile free?

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

### Is Shamir Spark™ Remote free?

Shamir Spark™ Remote is free to download, with no in-app purchases.

### Do JustIN Mobile or Shamir Spark™ Remote have ads?

Neither JustIN Mobile nor Shamir Spark™ Remote shows ads.

### Which is updated more often, JustIN Mobile or Shamir Spark™ Remote?

JustIN Mobile ships an update every 6 weeks, and Shamir Spark™ Remote every 3 months. Most recently, JustIN Mobile was updated on November 1, 2026 and Shamir Spark™ Remote on October 27, 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.*