Bumping this thread to see if anyone has an recommendations for a android recording app. They mostly seem like garbage. I'll pay for a good one. Thanks.
I recommend Axet Audio Recorder. You can get it on F-Droid. It has gain control, lossless wav or flac recording, and (on some phones) 24 or 32 float recording. I just use the internal mics but it seems to support external ones too.
Few words of warning:
- Don't use realtime encoding (it sometimes causes recordings with glitches, clicks, etc)
- Don't use sample rates over 48khz (also can cause glitches, plus every phone I've tested brickwalls at 48khz anyway making it pointless)
- Don't play other media or use the camera while recording (it can either temporarily or permanently silence the recording)
- I find the "Unprocessed" rec source to cause clipping where the "Mic" one doesn't.
- Even if the highest setting is 24-bit, try checking the metadata - my phone said 24 bit but the files were actually 32-bit float!
That sounds like a lot, but I've used this app for years and I find it very reliable when used right.