Best Rhombus Key Apps

141+ iOS apps curated and reviewed

3.8 avg rating

19 free apps

Updated October 2026

Rhombus Key is the household name in rhombus key, but it's far from the only option. We track 141+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Rhombus Key Apps (October 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Rhombus Key	Free	4.3★ (72)	No	No	Nov 2026
2	Locking Key Cabinet	Free	—	Yes	No	May 2026
3	StarSign Key Fob	Free	—	No	No	May 2026
4	LNDU KEY	Free	—	No	No	May 2026
5	APM Key	Free	—	No	No	May 2026
6	Colmobil Key	Free	—	No	No	May 2026
7	Sundial Lodge Key	Free	5.0★ (1)	No	No	Aug 2026
8	RMG Package & Key	Free	—	No	No	Aug 2026

Top Picks for Rhombus Key

#1

Rhombus Key by Rhombus Systems, Inc.

Editor's Choice

4.3(72 ratings)

Free

Rhombus Key screenshot 1

Rhombus Key screenshot 2

Rhombus Key screenshot 3

Securely unlock doors using your smartphone, eliminating the need for physical keys or keycards. This app offers fast building access, seamless badging, and the ability to save favorite doors for quick navigation. It supports multi-location access with a single login.

#2

Locking Key Cabinet by darcy knapp

Cobra Key Systems

Strong Contender

0.0(0 ratings)

FreeAds

Locking Key Cabinet screenshot 1

#3

StarSign Key Fob by Giesecke+Devrient GmbH

Worth Considering

0.0(0 ratings)

Free

StarSign Key Fob screenshot 1

StarSign Key Fob screenshot 2

StarSign Key Fob screenshot 3

StarSign Key Fob screenshot 4

StarSign Key Fob screenshot 5

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More Rhombus Key apps to explore

by Shenzhen Lingdu Auto Electronics Co., Ltd.

User App for Multi-family

Sundial Lodge Key

Sundial Lodge Key

Sundial Lodge Key

Remote access to Sundial Lodge

Access your accommodations and common areas remotely with this mobile key system. Unlock your unit, building entrances, and garage doors with ease during your stay.

Remote door unlockingUnit door accessBuilding common door access

RMG Package & Key

RMG Package & Key

RMG Package & Key

by CoDwellers.com Ltd

by GIANNI INDUSTRIES INC.

Maverick Key Cutting Machine

Maverick Key Cutting Machine

Maverick Key Cutting Machine

by Lock Labs, Inc.

by Shenzhen Ecartek Technology, Ltd.

This app transforms your smartphone into a smart car key, offering keyless entry and remote control for compatible vehicles. It also enables secure key sharing with customizable permissions and time limits.

Keyless entryRemote vehicle controlSmart key sharing

Lost & Car Key Duplicates

Key Innovations

Key Innovations

Key Innovations

by AUTOMOTIVE KEYS GROUP, LLC

This app simplifies locksmith shopping by allowing users to browse products, make purchases, and view order history. It also enables scanning QR codes for detailed product information, streamlining the mobile ordering process.

Browse product portfolioMake purchasesView order history

INFINIT SMART KEY

INFINIT SMART KEY

INFINIT SMART KEY

by Hatem Alsehimi

KeyPlus3 - Digital Key

KeyPlus3 - Digital Key

KeyPlus3 - Digital Key

by Special One Co., Ltd.

Black Widow Key Machine V2

Black Widow Key Machine V2

Black Widow Key Machine V2

by Lock Labs, Inc.

This utility app allows locksmiths to cut various types of keys, including high-security, edge-cut, dimple, tibbe, and tubular blanks. It connects via Bluetooth to a mobile device for cutting keys by code, duplication, and progression.

Cut high-security keysCut edge-cut keysCut dimple keys

by Autel Intelligent Technology Co., Ltd.

Easily program new car keys at home using your smartphone. Compatible with thousands of vehicle models, this app guides you through the DIY installation process after receiving a pre-cut key.

DIY car key pairingCompatible with thousands of vehiclesStep-by-step phone instructions

free with in-app purchases

EZ Key Programming

EZ Key Programming

EZ Key Programming

by Car Keys Express

This app simplifies the process of programming replacement car keys using just your smartphone and a compatible OBD dongle. It guides users through the steps to program various types of vehicle keys via the OBD port, eliminating the need for bulky, traditional equipment.

Program replacement auto keysConnect to OBD donglePerform initial dongle setup

by Greg Chambers

This app provides instructions for programming car key remotes. It offers a simple and easy way to find specific RKE procedures for various car makes and models.

Car key remote programming instructionsProcedures for specific makes and modelsSimple and easy to use

by SMARTCHIP MICROELECTRONICS CORP.

FAQ about Rhombus Key

What are the best rhombus key apps for iPhone?

Rhombus Key tops our rhombus key apps ranking as of October 2026, with a 4.3-star average from 72 App Store ratings, and it's free to download.

Are there free rhombus key apps for iPhone?

Yes — 19 of the top rhombus key apps we rank are free to download, including Rhombus Key and Locking Key Cabinet.

Does Rhombus Key have ads or in-app purchases?

Rhombus Key has no ads and has no in-app purchases, according to its App Store listing as of October 2026.

How many rhombus key apps are on the App Store?

We track 141+ rhombus key apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.