Best Low Cost Interlock Apps

179+ iOS apps curated and reviewed

3.1 avg rating

20 free apps

Updated October 2026

Looking for free low cost interlock apps? 20 of our 179+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Low Cost Interlock Apps (October 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Low Cost IID Client Portal	Free	—	Yes	No	Aug 2026
2	Interlock Warm Up	Free	1.5★ (8)	No	No	May 2026
3	Intoxalock	Free	1.7★ (893)	No	No	Oct 2026
4	AAInstaller	Free	—	No	No	Sep 2026
5	RemoteLock Resident App	Free	2.0★ (6)	No	No	Sep 2026
6	Allegion ENGAGE	Free	2.2★ (58)	No	No	Sep 2026
7	Nuki Smart Lock	Free	4.7★ (514)	No	No	Oct 2026
8	Unity Intercom	Free	3.9★ (51)	No	No	Sep 2026

Top Picks for Low Cost Interlock

#1

Low Cost IID Client Portal by Low Cost Interlock

Account Management

Editor's Choice

0.0(0 ratings)

Free

Low Cost IID Client Portal screenshot 1

Low Cost IID Client Portal screenshot 2

Low Cost IID Client Portal screenshot 3

Low Cost IID Client Portal screenshot 4

Low Cost IID Client Portal screenshot 5

#2

Interlock Warm Up by Low Cost Interlock

Strong Contender

📊 Productivity

1.5(8 ratings)

Free

Interlock Warm Up screenshot 1

Interlock Warm Up screenshot 2

Interlock Warm Up screenshot 3

Interlock Warm Up screenshot 4

Interlock Warm Up screenshot 5

Interlock Warm Up screenshot 6

This app allows you to remotely start the interlock warm-up process for your vehicle. Avoid waiting in your car by initiating the warm-up sequence from your mobile device.

#3

Intoxalock by Consumer Safety Technology, LLC

Ignition Interlock Device

Worth Considering

1.7😞(893 ratings)

Free

Intoxalock screenshot 1

Intoxalock screenshot 2

Intoxalock screenshot 3

Intoxalock screenshot 4

Intoxalock screenshot 5

Intoxalock screenshot 6

Manage your ignition interlock device account with ease. Track your status, make payments, schedule calibrations, and access important device information. Stay compliant and connected to your service center.

What We Love

🚀 Convenient app features
⏱️ Time-saving features
🔒 Responsive customer support

Room to Improve

💰 Excessive hidden fees
🔋 Battery draining device
🔧 Frequent device malfunctions
⏰ Dangerous driving distractions
🤖 Poor customer service
🤯 Frustrating user experience

More Low Cost Interlock apps to explore

📊 Productivity

RemoteLock Resident App

RemoteLock Resident App

RemoteLock Resident App

Unlock with a Tap

Securely unlock doors with your smartphone, replacing physical badges. This app is compatible with specific Schlage wireless locks and requires setup by property management. Once registered, you can see and unlock doors within range.

Smartphone door unlockingReplaces physical access badgesCompatible with Schlage wireless locks

📊 Productivity

Allegion ENGAGE

Allegion ENGAGE

Allegion ENGAGE

by Schlage Lock Company

This platform connects people, doors, and access points, offering intelligent control and efficiency for facilities. It enables users to manage electronic locks and credentials, view access activity, and update system firmware, transitioning from mechanical keys to electronic access.

Connect people, openings, and accessManage electronic locks and credentialsView access activity and alerts

📊 Productivity

Nuki Smart Lock

Nuki Smart Lock

Nuki Smart Lock

Turn your phone into your key

Transform your smartphone into a secure digital key for your home. Grant and manage access for family and friends, and monitor who enters and when. Enjoy convenient features like automatic unlocking and locking, with easy DIY installation and smart home integration.

Turn phone into a keyShare access permissionsActivity log

by Audivero LLC

This app provides a powerful, full-duplex intercom system over any IP network. It offers clear, low-latency audio and supports features like tally lights for production environments. Ideal for various professional communication needs.

Full-duplex communicationLow-latency audioTally light functionality

📊 Productivity

by T5 tek, Inc.

Smart Start Client Portal

Smart Start Client Portal

Smart Start Client Portal

Smart Start Account Management

Manage your alcohol monitoring account conveniently from your phone. Make payments, purchase unlock codes, find service centers, and update your profile. New users can enroll and prepare for installation appointments.

Make paymentsPurchase unlock codesFind service centers

free with in-app purchases

by ASSAABLOY AB

Manage mechatronic locking systems remotely. Update authorizations for BLE-enabled keys and program keys with connected devices. Suitable for systems of all sizes.

Remote authorization updatesBLE enabled key managementKey programming via mobile

Smartlock Softkey

📊 Productivity

Master Lock Vault Home

Master Lock Vault Home

Master Lock Vault Home

by Master Lock Company, LLC.

Manage your smart locks with your smartphone. Unlock, lock, and share access with digital keys and temporary codes. Receive low battery notifications and review a detailed history log of all lock activity.

Smartphone as digital keyShare access with guestsTemporary access codes

AIPHONE Type GT

AIPHONE Type GT

AIPHONE Type GT

by AIPHONE CO., LTD.

Transform your smartphone into a powerful intercom system. See, speak to, and grant access to visitors from your entrance station or guard station, no matter where you are. View visitor recordings and unlock your door remotely.

Respond to entrance station callsSee and talk to visitorsAnswer guard station calls

LockPLUS by NL Lock

LockPLUS by NL Lock

LockPLUS by NL Lock

by NL Lock&Electronics srl

📊 Productivity

Pealock - Electronic Lock

Pealock - Electronic Lock

Pealock - Electronic Lock

Pealock is an electronic lock

This portable electronic lock secures your sports equipment with a motion sensor and integrated alarm. It sends notifications to your phone and features a durable, adjustable strap with internal steel cables for enhanced security.

Motion sensorIntegrated alarmMobile notifications

What your intercom ought to be

This smart intercom allows you to see and speak with visitors at your apartment building's entrance directly from your iPhone or iPad. You can grant them access remotely, no matter your location.

Remote visitor communicationSee and speak with visitorsBuzz visitors in remotely

📊 Productivity

The Smart Home Enabler

Control your smart lock remotely. Set up your device with an intuitive guide, calibrate it, and monitor its lock state. Enjoy automatic unlocking as you arrive home and automatic re-locking when you leave.

Intuitive setup guideDanalock calibrationLock state monitoring

FAQ about Low Cost Interlock

Are there free low cost interlock apps for iPhone?

Yes — 20 of the top low cost interlock apps we rank are free to download, including Low Cost IID Client Portal and Interlock Warm Up.

Does Low Cost IID Client Portal have ads or in-app purchases?

Low Cost IID Client Portal shows ads and has no in-app purchases, according to its App Store listing as of October 2026.

How many low cost interlock apps are on the App Store?

We track 179+ low cost interlock apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.