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As you can see from the date of my last posting, it has been quite a while since I was in the testing phase. Both the iPhone and Android versions of my app are stable and in their respective app stores under the name "Engine RPM". I don't have anything new to test at the moment, but thank you...

I have an app for that. It is $9 on iPhone and $7 on Android. It listens to the sound of the engine and calculates and displays the RPM from that sound. The app is called "Engine RPM" in both stores, by Real-Time Specialties (that's me). I should warn you though that it has limitations. The...

Well, I also have an Android version, and if you message me privately I can give you a promo code for the Android version. But the iPhone version is the one I am currently updating and in need of testing.

Hello to all in Lawn Mower Forum. I am happy to have found this group. I have an unusual request, and it is my initial reason for joining. I have developed an iPhone app for measuring the RPM of an engine – especially small engines that don't normally have tachometers – using just the sound of...