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Rhombus Key

Rhombus Key

by Rhombus Systems, Inc.

68 ratings
27 reviews
🔧 Utilities
💼 Business
Free

Details

  • Released
  • Updated
  • June 30, 2023
  • December 2, 2025

Developer

Rhombus Systems, Inc.
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Rhombus Key screenshot #1 for iPhone
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About

Securely unlock doors directly from your smartphone. Replace physical keys and keycards with mobile credentials for fast, seamless building access. Manage multiple locations and favorite doors with a single login.

✓Secure smartphone door unlocking
✓Mobile credentials for building access
✓Seamless waving to unlock
✓Favorite door navigation
✓Multi-location access
✓Centralized control via Rhombus Access Control
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What's New in Rhombus Key

1.1.22

December 2, 2025

• Fixes lockdown modal issue where many locations would make button untappable

User reviews

Most RecentHighest RatedLowest Rated

Location settings

Allow app to work with location settings set to While using the app. Currently it only works with location settings set to Always on and it checks ALWAYS.
WildWeasel24WildWeasel24

Terrible

One of the worst apps I’ve had the displeasure of using. It’s awesome, when it works. Unfortunately, the app constantly bugs you about having your location on at all times for pointless features that drain battery life like crazy. Also have had issues with giving access to non-admin accounts, very buggy. Overall, a good idea with some serious work needed on basic features and user experience.
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Griffin55555Griffin55555

Very heavy Handed

Requires access to location data always, bluetooth and health data.
HeidisaHeidisa

Great App!

Works great and easy to use!
nwnwnw91nwnwnw91

Intuition and easy to use!

Pretty easy to use as an employee of a company that uses Rhombus
I only review apps I hateI only review apps I hate
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Developer apps

Rhombus
Rhombus

by Rhombus Systems, Inc.

🔧 Utilities

(55)

Free
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FAQ

What does Rhombus Key do?

Rhombus Key allows you to securely unlock doors directly from your smartphone. It replaces the need for physical keys, keycards, and badges, offering a modern approach to building access.

How does the app provide access?

The app uses mobile credentials for fast and secure building access. You can unlock doors by simply waving your phone or using it for seamless badging. It also allows you to save your most-used doors as favorites for quick navigation.

Is Rhombus Key free to use?

Based on the provided information, the app itself is free to download and use. However, it is compatible with Rhombus Access Control, which is a separate building management system that may have its own associated costs or requirements.

What are the benefits of using Rhombus Key?

The primary benefits include enhanced security, convenience by eliminating physical keys, and efficient management of access across multiple locations with a single login. It offers a seamless and modern way to enter buildings.

What is Rhombus Access Control?

Rhombus Access Control is a modern system for building management that works with the Rhombus Key app. It provides centralized visibility and control over access, seamless remote access capabilities, and is designed for unlimited scalability.