Comparison

Trailer Safety Control vs ShowerStar

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

Head to head

Trailer Safety Control

Shower Sensor Timer + App

Free

🔧 Utilities

No ratingsView app →

About

Trailer Safety Control

Features

Read full description

Allows the trailer user to communicate directly with the Trailer Safety Controller product via Bluetooth. Information from the trailer can be retrieved including trailer odometer, system status and diagnostic functions for troubleshooting trailer technical issues. NOTE: To use this app your trailer must have the Bosch Trailer Safety Control product installed and the supported Bluetooth communications.

About

ShowerStar

Features

Read full description

The ShowerStar App is used to configure and monitor ShowerStar Sensor Timer devices. Provision devices, edit alerts, forecast savings and view historical data.

Screenshots

Trailer Safety Control4 screens

ShowerStar4 screens

Verdict

The call

The clearest difference is update cadence: ShowerStar at monthly against Trailer Safety Control's every 18 months. Trailer Safety Control's advantage is iOS requirement (14.0 vs 16.0). On price, ads, in-app purchases and device support 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

Trailer Safety Control ships an update every 18 months, ShowerStar monthly. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 4 level

Trailer Safety Control versus ShowerStar: the parameters behind the verdict, then further details
Parameter	Trailer Safety Control	ShowerStar
Price	Free	Free
Update frequency	Every 18 months	Monthly — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod — better	iPhone
Requires iOS	14.0 — better	16.0
Further details — not scored
Size	50 MB	48 MB
Age rating	4+	4+
Developer	ROBERT BOSCH (AUSTRALIA) PROPRIETARY LIMITED	TouchGrid

In-app purchases

None

Trailer Safety Control

No in-app purchases

None

ShowerStar

No in-app purchases

Questions

Is Trailer Safety Control free?

Trailer Safety Control is free to download, with no in-app purchases.

Is ShowerStar free?

ShowerStar is free to download, with no in-app purchases.

Do Trailer Safety Control or ShowerStar have ads?

Neither Trailer Safety Control nor ShowerStar shows ads.

Which is updated more often, Trailer Safety Control or ShowerStar?

Trailer Safety Control ships an update every 18 months, and ShowerStar monthly. Most recently, Trailer Safety Control was updated on November 7, 2026 and ShowerStar on November 4, 2026.