Best DIY Security System Apps

244+ iOS apps curated and reviewed

3.8 avg rating
20 free apps
Updated August 2026

Sonic Security System is the household name in diy security system, but it's far from the only option. We track 244+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top DIY Security System Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Sonic Security SystemSonic Security SystemFree5.0★ (1)NoNoMay 2026
2SimpliSafe Home Security AppSimpliSafe Home Security AppFree4.8★ (323K)NoNoSep 2026
3Alarm.comAlarm.comFree4.7★ (141K)NoNoSep 2026
4Silex FortressSilex FortressFreeNoNoMay 2026
5System Surveyor 2.0System Surveyor 2.0Free3.7★ (15)NoNoSep 2026
6WhatsApp MessengerWhatsApp MessengerFree4.7★ (19M)YesYesSep 2026
7Ajax Security SystemAjax Security SystemFree4.4★ (268)NoNoSep 2026
8Home + SecurityHome + SecurityFree4.3★ (379)NoNoSep 2026

Top Picks for DIY Security System

5.0(1 ratings)
Free
Sonic Security System screenshot 1
Sonic Security System screenshot 2

This user-friendly smart wireless security system offers easy setup via a smartphone app. It allows for quick addition or removal of sensors and provides individual sensor configuration options. The system also supports wired inputs/outputs and wireless sirens for comprehensive security.

SimpliSafe Home Security App#2

SimpliSafe Home Security App by SimpliSafe Inc

Strong Contender
🌟 Lifestyle
4.8😐(323K ratings)
Free
SimpliSafe Home Security App screenshot 1
SimpliSafe Home Security App screenshot 2
SimpliSafe Home Security App screenshot 3
SimpliSafe Home Security App screenshot 4

Control your home security system remotely from your iPhone or iPad. Arm or disarm your system, receive instant alerts, and view a detailed timeline of events. Live video streaming is also available with compatible cameras.

What We Love

  • 🚀 Easy to install
  • 🔒 Reliable security system
  • 👍 Customizable settings
  • 🔒 Prompt monitoring response
  • 👍 Helpful customer service

Room to Improve

  • 🐛 App connectivity issues
  • 🔋 Battery life concerns
  • 💰 Expensive subscription costs
  • 🔍 Limited camera functionality
  • 🔍 Lack of integration with smart home devices
Alarm.com#3

Alarm.com by Alarm.com

Worth Considering
🌟 Lifestyle
4.7😐(141K ratings)
Free
Alarm.com screenshot 1
Alarm.com screenshot 2
Alarm.com screenshot 3
Alarm.com screenshot 4
Alarm.com screenshot 5
Alarm.com screenshot 6

Connect and protect your home or business with a unified system. Remotely control security, locks, lights, and cameras, and receive intelligent alerts for crime, fire, or water damage. Automate routines and manage your property from anywhere.

What We Love

  • 🚀 Fast and intuitive app
  • 🔒 Provides good security and monitoring
  • 👍 Easy to use and control home devices
  • 💡 Helpful for remote home management

Room to Improve

  • 🐛 Frequent connectivity issues and app crashes
  • 🔋 Unreliable notifications and alerts
  • 👎 Poor customer service and technical support
  • 🕰️ Slow response times for arming/disarming

More DIY Security System apps to explore

FAQ about DIY Security System

What are the best diy security system apps for iPhone?
Sonic Security System tops our diy security system apps ranking as of August 2026, with a 5.0-star average from 1 App Store ratings, and it's free to download.
Yes — 20 of the top diy security system apps we rank are free to download, including Sonic Security System and SimpliSafe Home Security App.
Sonic Security System has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 244+ diy security system apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Sonic Security System is designed for user-friendly and easy setup. The system can be configured quickly via the smartphone app, making it a professional DIY wireless security solution.
Yes, you can easily add or remove sensors directly from the smartphone app. Individual setup for sensors is also available, allowing for configurations like close, delay, or instant alerts.