SplittyPie might be a bit more popular than Stripe: Relay. We know about 1 link to it since March 2021 and only 1 link to Stripe: Relay. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
If you’d like to follow along, you’ll need a Stripe account which you can sign up for here, and access to the public beta. You can sign up for the Orders public beta here. - Source: dev.to / about 2 years ago
Maybe https://splittypie.com/ could work? It does bot have apps, but can work offline in the Browser. Source: almost 2 years ago
Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.
Splitwise - Splitwise is a free tool for friends and roommates to track bills and other shared expenses, so that everyone gets paid back. On the web, iPhone, and Android!
SecurionPay - SecurionPay offers online and mobile-based payment solutions created for developers.
Tricount - Manage and share expenses with friends
Checkout Page - Sell on your site with customizable checkouts. Tailor-made one page checkouts to sell digital products & services without an ecommerce store.
Kittysplit - The easiest way of sharing costs with a group of friends