Transform your iPhone into a contactless payment terminal without any extra hardware. Accept debit, credit, and digital wallet payments instantly. Manage sales and send digital receipts on the go.
3.8(98 ratings)
FreeIn-App Purchases
Best IOU alternatives: apps like IOU-Marker
1+ similar apps compared and reviewed
3.8 avg rating
1 free apps
Updated October 2026
Whether you want more options like IOU or a completely different take on the same concept, our curated list of 1+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.
Top Alternatives to IOU