Mobile commerce has experienced significant growth, with projections indicating it would constitute 72.9% of all e-commerce by 2021, driven by consumer preference for apps over mobile sites. Popular in-app payment solutions such as Stripe, Braintree, Adyen, Judopay, Square, Paysafe, Checkout.com, Authorize.Net, Trust Payments, and BlueSnap offer various features and pricing models to support iOS and Android, with some extending to React Native, Xamarin, and Flutter. While Stripe leads with comprehensive SDKs and customizable UI components, Braintree and Adyen provide robust local payment support, and Judopay emphasizes mobile-first solutions with tailored pricing. Square stands out for its Flutter SDK, while Paysafe focuses on security. Checkout.com and Trust Payments offer wide-ranging payment methods, and BlueSnap integrates with numerous tools. Pricing generally includes transaction fees, with additional costs for international cards or currency conversions, but specific details vary by provider and region.