How to build an app like Tinder
The swiping is the easy part. What separates a matching app that works from one that dies in two months is three things, and none of them is the card animation.
What you can build
- a profile with photo, bio and whatever else your case needs, with what is public and what is not decided in the database;
- cards to swipe, with a like and a pass;
- a match when both sides like, and a conversation that opens only then;
- filters by distance, age, interest, or whatever makes sense;
- reporting and blocking, which are not optional (see below);
- push notifications when a match happens and when a message arrives;
- subscriptions, if you want to charge for extra features.
The three things that decide the outcome
1. Critical mass. A matching app is worth nothing with ten people and a lot with ten thousand. That is the real problem, and it is acquisition rather than software. Niche communities with a defined boundary (a city, a university, a profession) work because the number needed is far smaller.
2. Safety, which is a store requirement. An app with user-generated content needs, in both stores, content filtering, in-app reporting, blocking between users and a developer contact channel. It is not a recommendation, it decides whether the app gets in. Without it, rejection is close to certain.
3. Imbalance. Every matching app has a side in surplus and a side in shortage, and the side in shortage is the one to protect. Filters, daily limits and verification exist for that.
What does not come ready
Recommendation trained on behaviour. Ordering by distance, shared interests and recent activity: available. A model that learns from millions of swipes who to show to whom: not; it is the asset the big apps built over years of use.
Matching is not only dating
The mechanic is more useful outside dating than inside it, because the critical-mass problem is smaller:
- mentor and mentee inside a company or a university;
- vacancy and candidate in a specific field;
- lift shares between people on the same route;
- animal adoption, with shelters on one side and families on the other;
- swaps, from collectibles to equipment.
In all of them the "match" is the shape; the subject is yours.
A prompt to start with
Build a mentoring app with matching. People sign up as mentor or mentee, with a photo, field, seniority and topics of interest; the mentee sees cards of mentors filtered by field and topic and marks interest; when the mentor also marks it, a conversation opens between them; there is reporting and blocking on any profile, and an admin area only I can see with open reports; push notifications when a match happens and when a message arrives; and a limit of five new interests per person per day.
The short version
- swiping, matching and conversation: all available, straight from a description;
- reporting, blocking and filtering are not optional, they are a requirement of both stores;
- the hard problem is critical mass, and it is acquisition, not software;
- a niche with a defined boundary needs far fewer people to work;
- the matching mechanic serves mentoring, hiring, lift shares and adoption, not only dating.