Looking for a Pedometer app that can be stored on the SD card

[Android Central Question]

Every pedometer app I've downloaded is forced to use internal storage.

 

[Rukbat]

SD cards are for storing data. If you want to store the .apk file for an app on the SD card, that's fine, but there are at least 3 problems with running an app from the SD card.

1. You don't move the whole app as one file, each piece of the app is moved separately (Android looks for apps in internal storage, so that's how it has to be done). For each piece moved, there's a link left pointing to where on the SD card it is, in internal storage. So it doesn't save much space.

2. Many apps won't run if moved to the SD card. That's up to how the developer develops the app. Some classes (Android apps are written in Java, which uses class files) just don't run from the SD card.

3. An Android app has to keep its current status stored at all times since, if you run another app for a minute, and there's no space in RAM, Android will kill an app that's in the background to make space for the one you want in the foreground (showing on the screen). When you go back to the killed app, Android loads it back, telling it to start where it left off. For some apps, that means constant writing.

eMMC storage, the internal storage, can handle that. SD storage is rated in write cycles, and if the app is writing to the SD card 100 times/second, it can destroy the card quickly.

So you're stuck using a pedometer app in internal storage. (Every step is another write to storage.)