Both apps look nice and can be integrated with your WooCommerce app using their plugins and it will run smoothly.
The cost depends on your requirements. If you just want to integrate it with your WooCommerce website, configure the 3-rd party integrations like OneSignal, Stripe, PayPal etc and publish the app to Google Play and App Store, the cost will be $200 only and it will take 2 days to be done.
If you want to make some modifications to the app itself, the cost and time will change accordingly.
Please send me a private message to discuss it in more details.