You can access Teammo from your website browser (e.g. Chrome, Safari, Firefox). No mobile app downloads are required.
Teammo has a mobile app, if you'd prefer to access Teammo that way. Search for Teammo in the Apple App Store or Google Play Store.
When you send a payment request to your team members, they do not need a Teammo account to make their payment. They will receive an SMS with a link to make their payment.
Following their first payment via debit or credit card, all future payment requests can be paid by texting a unique code. See below for reference: