Can anyone recommend a free call recorder app (android)?

There are many freemium options. I'm trying to cut through testing a bunch of different ones. It's being used to compare copy on sales campaign.

Options:
- In call recording start
- No notification when recording starts
- It doesn't matter if it has ads
- Storage of at least 10 calls

I'm considering

- Cube Call Recorder ACR​

- Call Recorder – ACR​

Thanks!

Automatic call recorder by appliqato

I never had to use this cuz I never had a phone which didn't have a call recording feature as default

Great - I'll check it out. Thanks!