Effet Tandem’s dating app and its console, designed and built by Witify for iOS, Android and the web. No profile without a verified identity, no photo without a review.
The rules the app enforces, counted in its code.
29
sign-up steps Progress is saved: members pick up where they left off.
49
profile questions Most multiple-choice questions double as search filters and inbox rules.
2
checks for every member The legal identity before appearing, then each photo before it is shown.
3
platforms, one code base iOS, Android and the web.
1
flower a day Two flowers exchanged make a Flower match.
Figures read in the code of the app and its console on November 13, 2026.
First the identity, checked with a credit bureau at sign-up. Then each photo, compared by hand with a reference photo before other members can see it.
01 Identity
Name, date of birth and address are checked in three attempts at most. A second account with the same name and date of birth is refused. After a missed attempt, the member can ask for a manual check by phone and carry on. The profile shows only the first name and the city.
02 Photos
The member first takes a reference photo in a pose shown as an example: it never appears on the profile. Then they add two to six photos; the first, their main picture, must be a portrait.
03 Review
In the console, the team sees the reference photo next to each new photo and gives it a status: Portrait, Authenticated, Validated or Refused. Until a photo has a status, other members cannot see it.
04 Album complete
The album is complete as soon as two photos are accepted, including at least one portrait. The member is notified after a 15-minute delay, so the team can change a status without sending two notices.
A member shows up in search when their identity is confirmed, their album is in order or awaiting review, their subscription is active, their profile is neither paused nor suspended, and the orientation matches both ways. Nobody has to chase up a member whose album was refused: the follow-up runs by itself.
Search can be sorted by the values members share, and each member offers a single flower a day. Every member also decides who reaches their priority inbox.
Search
Up to five filters at once, from some thirty criteria.
Flower
When two members offer each other one, it is a Flower match.
Messages
Up to three rules decide where a first message lands.
Plans, promotional periods and referral prices are set in the console, without a developer. On the web, members pay by card and renewals are charged every night; on a phone, they go through the app store, and each purchase is validated before the subscription is switched on.
A dating service depends on trust and on members who stay. For each choice: the risk avoided, what we chose, what Effet Tandem gains.
One app for three platforms, a server and its console, put into service from May to October 2022.
I tried two agencies before coming across Witify, and they were the ones who were able to complete the project from A to Z to a level of quality I no longer thought possible. They guided, advised, and supported me throughout the design and complete development of the mobile app. I highly recommend them!
Thirty minutes to walk through your sign-up flow together.
Names and figures shown in the interfaces are examples.