FAQ

Short answers. For anything not here, send an email.

Is it free?

Yes. The default inline-six and all gearbox, exhaust, and tuning settings are free. Switching to a different non-default engine requires a rewarded ad and confirmation of its reward each time. Reopening the app restores the last engine saved on your device, or the default engine if no saved choice is available. An ad error or closing before reward confirmation does not change your engine. There are no in-app purchases or points.

When do ads appear?

A banner appears at the bottom of the screen. To switch to a different non-default engine, you choose to watch a rewarded ad in the prompt. Your engine stays the same unless the reward is confirmed. Full-screen ads do not unexpectedly interrupt starting, shifting, or changing settings.

Where can I get it?

Engine Simulator is available inside the Toss app. Google Play and App Store versions are coming soon; this website will announce their availability.

There is no sound.

Check your device's media volume and silent switch, and make sure sound is turned on in the app settings. Sound pauses while an ad or dialog is open and resumes when it closes.

Are these real car engines?

No. They express general traits like cylinder layout and rev character and are not tied to any vehicle or brand. The revs and load shown are simulation values inside the app.

Which engines and gearboxes are included?

The lineup keeps growing. The setup screen inside the app is the most accurate list.

Do I need an account or permissions?

No. You can use it right away with no sign-in or device permissions required, and settings are stored only on your device.

How do I get in touch?

Email hello@groundcode.io.