Postgres Client by SQLPro

I've tried almost all the Postgres front end apps for iPhone and this is the easiest and most reliable. If issues come up, the developer is very responsive and helpful. Highly recommended.

Best I could ask for as a client on my phone. You can view, edit, create tables as well as write your own .sql files all for free

It seems pretty decent, but it really is just "type some SQL" and output the result in a grid view. There's no "free version for one connection" thing, you have to pay to copy/paste results for even the 1st conn, which makes it useless for testing the app ; the sample DB provided is really not a valid test, if you're not testing on your own DB you're not really testing anything useful... I dont really need more on iPad but the price just doesn't make sense, $5/month or $99 to buy outright is just way too high for how simple this app is. DataGrip on macOS is $89 and is so much more its not even close...