Comparison

Interfree vs SmartDDL App

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Interfree

Control and customize your smart home devices remotely. Monitor energy usage in real-time, set personalized scenes, and automate actions for convenience and security. Manage multiple devices, rooms, and entire premises from a single, intuitive platform.

Highlights
  • Remote device control
  • Real-time energy monitoring
  • Customizable scenes and automation
  • Security notifications and footage
  • Multi-device and multi-room management
  • QR code device setup
Read full description

Customise and create the smart premises of your dreams with Interfree’s Wi-Fi and Zigbee enabled switches, outlets, controllers, security products and more, that are all interconnected via the all-in-one Interfree App. Whether you’re at home, at work, or even on vacation, be in control anytime, anywhere from your IOS device with Interfree’s Smart Building Solution. The Interfree App’s extensive range of innovative and unique features enables users to manage multiple devices, rooms, floors, and even premises, all from one convenient platform. It has been specially designed so that it can be completely personalised, from adding select rooms, camera views and devices to the applications home screen for easy access, to being able to select various icons as well as custom name the various floors, rooms and appliances within your premises. Equipped with a revolutionary Real Time Dollar Value Energy Monitoring feature, you can see exactly how much energy and money is being spent in real time on every device in the premises. Complete with a monthly budget setting feature, users can simply pinpoint exactly where savings can be made, as well as view all past bills from the convenience of the app. Easily create personalised scenes and set up one touch commands that bring a whole new ambience to your premises with the touch of a button. Configure automation rules so that you can be greeted by a light as soon as you walk into a room, or be welcomed home by music and the warmth of the heater. Ease your life and discover the endless possibilities of your premises, with Interfree. INTERFREE APP FEATURES: • Have a complete overview of every building, floor, room, device and appliance in the premises that is linked Interfree System or has been added to the Interfree App • Add devices to the app through QR code scanning • See what devices are on or off • Turn devices on or off • Arm or disarm entire premises • Receive real time security notifications • View real time security footage • View real time energy consumption for each device connected to the Interfree system • Set scenes • Program automation (IFTTT)

About

SmartDDL App

Features
Read full description

Introducing our DDL SmartLock App. Experience the convenience of DDL's premium smart door lock which you can access anytime, anywhere. With our app, you can: 1. Remotely control access of door opening with the door lock 2. Monitor who enters and exits 3. Receive real-time notifications of door opening, overheating detection, and battery condition for added peace of mind 4. Grant temporary access to guests, set custom access schedules 5. Check and view activity logs and access history of the door lock With our smart door lock app, you can have full control over the security of your home from the convenience of your smartphone.

Screenshots

Interfree4 screens
SmartDDL App4 screens

Verdict

The call

The clearest difference is iOS requirement: Interfree at 10.3 against SmartDDL App's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Interfree ships an update every 4 months, SmartDDL App every 5 months. The most recent releases landed on September 15, 2026 and September 11, 2026 respectively.

Scorecard1 real difference · 9 level
Interfree versus SmartDDL App: the parameters behind the verdict, then further details
ParameterInterfreeSmartDDL App
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS10.3 — better13.0
Further details — not scored
Size188 MB55 MB
Age rating4+4+
DeveloperInterfree Pty LtdDigital Door Locks Pty Ltd

In-app purchases

None

Interfree

No in-app purchases

None

SmartDDL App

No in-app purchases

Questions

Is Interfree free?
Interfree is free to download, with no in-app purchases.
Is SmartDDL App free?
SmartDDL App is free to download, with no in-app purchases.
Do Interfree or SmartDDL App have ads?
Neither Interfree nor SmartDDL App shows ads.
Which is updated more often, Interfree or SmartDDL App?
Interfree ships an update every 4 months, and SmartDDL App every 5 months. Most recently, Interfree was updated on September 15, 2026 and SmartDDL App on September 11, 2026.

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