Reso on your iPhone.

Reso runs as a web app on iPhone. Add it to your Home Screen and it opens full screen like any other app. There is no App Store app yet.

Use Safari. This will not work in Chrome on iPhone.

Open app.resoapp.in in SafariSign in or start your free trial.
Tap the Share buttonIt is the box with an arrow pointing up, at the bottom of Safari.
Tap Add to Home ScreenScroll down in the share sheet, tap it, then tap Add.
Open Reso from your Home ScreenIt opens full screen, with no browser bar.

Why a web app? You get the same Reso on every device, it is always up to date, and there is nothing to download from the App Store.