# Parking Heater Remote — Webasto ThermoCall via SMS

> Webasto ThermoCall via SMS (iPhone/iPad app by Christian Bumberger.)

- Source: https://appshunter.io/ios/app/parking-heater-remote/id6816491689 (this page in markdown: same URL + `.md`)
- Developer: [Christian Bumberger](https://appshunter.io/developer/939556226)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 6 MB
- Languages: American English, Danish, Finnish, French (France), German (Germany), Italian, Norwegian Bokmål, European Spanish, Swedish
- Released: 2026-09-27
- Data updated: 2026-10-19

## What is Parking Heater Remote?

Parking Heater controls your Webasto parking heater with ThermoCall TC3 or TC4 via SMS – and turns it into a proper app: start, stop, timer, status and temperature with one tap. The heater’s replies are evaluated and shown in the app, in widgets and on Apple Watch.

CONTROL
• Start, stop, status and temperature with one tap
• Timer for your departure time – with Heating Time Management (HTM) the heater calculates switch-on time and duration itself
• Set run time, comfort level, auxiliary output and temperature alarm
• Confirmation before starting and changing settings, can be turned off
• Send automatically via a shortcut – no detour through the Messages app

UNDERSTAND REPLIES
• Reply SMS from the heater are evaluated: state, remaining time, cabin temperature, battery voltage
• Live Activity on the Lock Screen and in the Dynamic Island while the heater is running
• Notification when the run time ends and warning on low battery voltage
• Battery trend: detects when the voltage keeps dropping day after day

WEEKLY SCHEDULE
• Departure time per weekday, pause for holidays or home-office days
• Heat only when cold: weather forecast for where the car is parked (Open-Meteo)
• Calendar: departure before your first appointment, optionally with travel time from Apple Maps
• Start check: verifies shortly before departure that the timer really fired
• Preview of the next 7 days

AT A GLANCE
• Widgets for the Home and Lock Screen, controls in Control Center
• Apple Watch app with complication
• History with battery voltage, temperature, heating statistics and fuel costs
• Keeps an eye on the heater SIM’s credit and warns before it runs out
• Sync between iPhone, iPad and Watch via iCloud
• Siri: “turn on Parking Heater”

REQUIREMENTS
• Webasto parking heater with ThermoCall TC3 (firmware 3.2 or later) or TC4 (SMS control) and a SIM card in the unit
• Your iPhone must be registered in the ThermoCall unit as an authorized number
• Every reply from the heater is an SMS – charges may apply depending on your plan
• Automatic sending and evaluating use Apple’s Shortcuts app; the in-app guide explains every step
• Ready-made shortcuts to add are available on the support page: www.bumberger.at/en/standheizung

This app is an independent project and is not affiliated with the Webasto Group. Webasto and ThermoCall are trademarks of Webasto SE.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Parking Heater Pro | $8.99 | one-time |


## Is Parking Heater Remote safe?

Not enough ratings yet to assess Parking Heater Remote.

## Is Parking Heater Remote legit?

Parking Heater Remote appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Parking Heater Remote is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.6 — 2026-10-18

New home screen: while the heater runs, an orange card with a progress ring shows the time left. Otherwise the next run is front and centre – with weather forecast, week strip and whether the heater confirmed the timer. A paused weekly schedule can be resumed right from the home screen. Also: choose Light, Dark or System appearance, animated launch screen, longer times in days and hours, the new overview on Mac and more reliable iCloud sync of the weekly schedule.

### 1.5 — 2026-10-14

New: The app notices when a change to your weekly plan or calendar affects the evening timer and offers to resend it with one tap – on iPhone, Mac and Watch. The status card glows orange with a progress bar while the heater runs; the bar also appears in widgets, the Live Activity and on the Watch. Apple Watch now has Start and Stop buttons, start at a set time, recent replies and complications for timer, plan and voltage. The first appointment of the day now counts at any time. Also: bug fixes.

### 1.4.1 — 2026-10-10

Winter check: verifies battery, SIM credit, automations and weekly schedule before the frost. TC3: heating time by temperature like the TC4’s HTM. Shortcuts now have English names in every language. Also: choose the app background (gradients, flame, own photo), “Report a problem” in About, bug fixes.

### 1.3 — 2026-10-09

Setup assistant on first launch, “Report a problem” in Diagnostics, sidebar on iPad, widgets on the Mac, Watch widget in the Smart Stack before departure.

### 1.2 — 2026-10-08

The app now also speaks Swedish, Norwegian, Finnish and Danish.

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## More apps by Christian Bumberger

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All apps by Christian Bumberger: https://appshunter.io/developer/939556226

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-19.*