As many as you want. happn says you can activate as many Boosts per day as you like, and you can buy more from the shop at any time. The one limit is that only one Boost can be active at a time, so there is no way to run two at once for a double dose.
The rule, in plain terms
There is no daily cap. You could start a Boost in the morning, another at lunch and another in the evening, and happn would let you.
What you cannot do is stack them. While one Boost is running, that is the only one running. You start the next one after the current one has finished.
That is the whole of happn's rule. The more useful question is how many you should use, and the answer is almost always fewer than you can.
Can is not the same as should
a dating coach once ran a Boost every day for several days in a row, as part of a challenge to fit as many dates as he could into one week. The first day brought in the most. The second brought a bit fewer, the third fewer again, and by the fourth he was barely getting anything, so he changed tactics.
His explanation is that many apps give diminishing returns when you boost over and over. A Boost after you have been quiet for a while lands on people who have not seen you yet. A Boost right after another one lands mostly on people who already have.
Why the second Boost reaches fewer new people
It helps to picture what a Boost on happn actually does. It puts you at the top for active users around you who fit your preferences.
Think about who that is on a given evening. It is the women near you who have the app open right now. Your first Boost puts you in front of them. If you start a second one twenty minutes later from the same couch, most of the women it reaches are the same ones. The ones who liked you have already done it. The ones who passed are unlikely to change their minds because you showed up again.
So a second Boost straight after the first is mostly paying for attention you already had.
Message everyone before the next one
My working rule is simple. Boost, then answer everyone that Boost brought in, and only start another one once you have reached the end of those conversations.
There are two reasons for it. The first is the diminishing returns above: a gap lets the pool refresh. The second is that too many Crushes at once is its own problem. When they all arrive in one clump, you cannot keep up with all of them, and some of the good ones slip through the cracks before you get to them.
A Crush you never answered is worth nothing. A handful you actually talk to, and move toward a plan within a few days, is worth far more than a pile you meant to get around to.
In practice, this spaces your Boosts out on its own. One Boost, a few days of real conversations, and then the next one. That rhythm also gives the people around you time to change, so each Boost lands on more faces that have not seen you yet.
When a second Boost in one day makes sense
There is one situation where two Boosts on the same day can both earn their keep: when you are in two different places.
A Boost works on the people around you. If you boost at lunch near your office and again in the evening from home, you are in two different neighborhoods. Those are likely to be two different sets of people. The same goes for a day when you are visiting another part of town, or another city, for real.
What does not count is boosting twice from the same spot because the first one felt slow. If an evening Boost brought in very little, a second one from the same place will usually bring in less.
Timing matters for each one as well. A Boost only reaches people who are active while it runs, so an hour when people are home with their phones out is worth more than the middle of a working morning.
Test it, then decide
My rule for anything paid on the apps is to test it rather than trust the theory. The proof is whether it works for you, not what anyone says it should do.
So run a simple check. Keep a note of what a single Boost on a normal evening brings in: Likes, Crushes, and conversations that head toward a plan. Then try a different spacing for a couple of weeks and compare.
One well-timed Boost, used when you are free to reply, usually beats three rushed ones. Buy as many as your results justify, space them out, and put the effort you save into the conversations.
Written by Matthew Stevens, Co-Founder & Head Coach. More than half a decade coaching men across the US and worldwide.
Everything here comes out of real coaching work: the approaches, dates, texts and profiles we go through with the men we coach.