I've been using the app for over a month and I really like the way it works. I've never had an issue with the app, it records all calls and converts them to text. The thing you should know before installing the app from the AppStore - the app won't work without a 3-way conference so make sure that this feature is enabled on your iPhone. The quality of recorded calls is clear, the converted text is also fine. There's also an option to share your calls by creating a link to the file. The app is worth a try.
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