There isn't a "best" device to use with Gaia GPS - many users have success with both Apple and Android devices.
But here are a few things to consider when looking for a new device:
- Make sure that the device has a built-in GPS and compass. Most phones have them these days, but not all tablets do.
- Ensure it runs either: iOS 10 or higher, or Android 5 or higher
- At least 1 GB of RAM is recommended, as recording tracks can use up a bit of memory. 2 GB or even 4 GB is even better.
- Users have recommended getting a device with at least 32GB of internal storage to download maps for offline use.