Comparison

ComplicaJSON vs Trailer Check Pro

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

Head to head
About

ComplicaJSON

Read full description

ComplicaJSON transforms any JSON data source into a personalized Apple Watch complication. Connect to your favorite APIs for weather, stock prices, server metrics, or any other JSON endpoint and get access to your data at a glance. The Apple Watch will automatically update the data at regular intervals, ensuring you always have the latest information right on your wrist. With support for Image URL, String, Number, Boolean, and Percentage data types, you can customize your watch face with the exact metrics you need.

About

Trailer Check Pro

Features
Read full description

TrailerCheck Pro is a high-fidelity diagnostic application designed to interface seamlessly with TrailerCheck Pro hardware via Bluetooth Low Energy (BLE). Built for mechanics, fleet operators, and DIY enthusiasts, it provides professional-grade diagnostics, monitoring, and control for trailer lighting and power systems. Key Features: Real-Time Telemetry: Monitor output voltage, load current, device temperature, and battery health with high precision. Lighting Controls: Interactive, wireless control over Brake, Tail, Clearance, Turn Signals, Hazards, and Auxiliary power. Intelligent Visualization: Real-time trailer model visualization showing active light states and animations as you test. Battery Diagnostics: Advanced monitoring with support for various battery types (Milwaukee M18, DeWalt 20V, Bosch 18V). Over-the-Air Updates: Perform wireless firmware updates on your TrailerCheck Pro hardware directly from the app. NFC Quick-Launch: Instantly launch the app and connect by tapping your phone to the hardware case. Note: This app requires the physical TrailerCheck Pro hardware to function.

Screenshots

ComplicaJSON4 screens
Trailer Check Pro4 screens

Verdict

The call

The clearest difference is iOS requirement: Trailer Check Pro at 15.1 against ComplicaJSON's 18.5. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

Scorecard1 real difference ยท 4 level
ComplicaJSON versus Trailer Check Pro: the parameters behind the verdict, then further details
ParameterComplicaJSONTrailer Check Pro
PriceFreeFree
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, Apple WatchiPhone, iPad, iPod โ€” better
Requires iOS18.515.1 โ€” better
Further details โ€” not scored
Size14 MB32 MB
Age rating4+4+
DeveloperAlmost Good Enough ApSGreg Maendel

In-app purchases

None

ComplicaJSON

No in-app purchases

None

Trailer Check Pro

No in-app purchases

Questions

Is ComplicaJSON free?
ComplicaJSON is free to download, with no in-app purchases.
Is Trailer Check Pro free?
Trailer Check Pro is free to download, with no in-app purchases.
Do ComplicaJSON or Trailer Check Pro have ads?
Neither ComplicaJSON nor Trailer Check Pro shows ads.

Other comparisons