There are so many ways referral program could be implemented in your mobile app, thus there is no some "general solution". Here is a handy list of 77 referral program examples
where you can get inspiration for your business or feel free to RESERVE A CALL
with us and we'll help you to apply all this to your mobile app referral program in no time.
Referral programs are not an easy thing, they should be constantly monitored and improved over time. You should treat each detail very seriously, as there are communities out there which are hunting different ref programs and their feebles (here is an article explaining how they hacked Uber referral program
). Luckily, referral programs in mobile apps give additional ways to protect owners and filter fraud, as a mobile device is still a highly personal thing.
The first thing that we suggest our clients when building a referral system for their app is to set up a section on the admin panel with top referral stats, and each month closely investigate top 10-20 of them because most of the fraud will be among the greedy ones and they will be on the top of the list.