I like PayPal, it has a high security standard. Except when I am the one suffering a chargeback for some flimsy reasons.
PayPal might be a bit more popular than I Know It. We know about 1 link to it since March 2021 and only 1 link to I Know It. 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.
For supplemental math, try “I Know It” iKnowIt.com. There are cute cartoon animations for kids, and hundreds of review math lessons/skills/topics. Source: about 2 years ago
(I live in USA) When I go to payments under my shopify account to add paypal as a payment method I am having trouble doing so. I first click activate paypal > activate paypal express checkout which directs me to a "security challenge" (confirm I am not a robot). Then it just brings me to paypals website (paypal.com/us/home). When I sign in nothing happens, I am just on my paypal homescreen. Source: over 1 year ago
GCompris - Educational Game for Children 2 to 10 years old.
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.
childsplay - Childsplay is a collection of educational activities for young children and runs on Windows, OSX, and Linux. Childsplay can be used at home, kindergartens and pre-schools.
Payoneer - Whether making international payments, receiving funds, managing your digital business, or accessing capital, Payoneer opens your business up to the world.
Math Games - Math Games is a website which kids in Preschool through 8th grade can practice math.
Braintree - An all-in-one solution to accept, process, and split payments in your mobile app or online - from small business to large enterprise.