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Partner program by Kallen
Commission
30% of every payment
Paid on the first payment, and on every renewal a subscription makes after it
What you are promoting
Subscription
Calculated on
The developer's proceeds, after store fees and tax
The same basis applies to every commission — your portal shows it next to your rate
Billing
Mobile app
Payments are read straight from the app's billing webhooks
Refund hold
30 days
How long each commission waits before it becomes payable — refunds inside that window cancel out
Paid by
The founder, directly
PolyReach counts the commissions; it never holds your money
Kallen reads 33 body landmarks from a few phone photos, gives every range of motion in degrees, compares the left side against the right — and builds the plan from those numbers instead of from a generic stretch list.
That is also why it is easy to recommend: nobody has to take your word for it. Your viewer points a camera at themselves, sees their own angles on the screen, and gets a plan built from them — before anyone asks them to pay for anything.
Three audiences this was made for:
Posture, mobility and health creators. You already answer “what do I do about my neck?” in every comment section. Kallen is the answer that keeps working after the video ends — and every subscriber who names you keeps paying you, month after month.
Physiotherapists with a local practice. Most of your followers live in the wrong city to ever book an appointment with you, so today they are worth nothing to you. Those are exactly the people this turns into recurring income — and not one of them was ever going to take a slot in your calendar.
Desk-work, remote-work and productivity creators. Forward head, rounded shoulders, a lower back that gives up in the sixth hour of sitting: that is not a fitness topic, it is a home-office topic, and it belongs in the video you are already making about your setup.
What makes it good to put on camera:
The scan is the hook. A phone, a wall, a few seconds — then a screen full of the viewer’s own numbers. It is a before/after you can shoot in one take.
It is honest, so you can be too. It measures what limits a movement instead of guessing, it says when something belongs with a real physio, and it asks the user to approve every change to their plan.
Nothing leaves the phone. No account, no cloud, no sign-up wall — for an audience tired of handing over an e-mail to see a stretch, that objection is simply gone.
Free to download, plan included. Kallen Pro is what lifts the weekly scan limit, so your audience meets the product long before the paywall.
English and Polish, fully localized — a Polish-speaking channel is not the smaller opportunity here.
Kallen is an iPhone app sold as a subscription through the App Store. You earn on the first payment and on every renewal after it, for as long as the person keeps using it.
What this founder is looking for
You post about bodies, desks or training. Size is not the filter: a physiotherapist or trainer with 2,000 people who trust them converts better here than a general fitness page with 200,000 who do not. Scan yourself before you post about it. Every partner gets Kallen Pro free for as long as the partnership lasts — recommend it once your own measurements have convinced you, not before. Never present Kallen as a diagnosis or as a replacement for a physiotherapist. It measures, it plans, and it says out loud when something belongs in a clinic. Say it the same way and your audience will trust both of us. Two practical things: Kallen is iPhone-only today (tell me if your audience is mostly on Android and I will let you know the moment that changes), and English or Polish are equally fine — the app is fully localized in both.
How it works for you
Apply on the right: your name, your email, and where your audience is. About a minute, no account needed.
If the founder approves you, your name joins the app’s “How did you hear about us?” list, and you get a private portal with your referred customers, commissions and payouts.
Every subscriber who picks your name earns you 30% of the developer's proceeds — on their first payment and on every renewal, for as long as they stay.
The founder pays you directly and records the payout in the ledger, so both of you are looking at the same history.
If a customer refunds or charges back, the matching commission is reversed — which is also why commissions rest on this program's refund-protection hold before they become payable.
About a minute. No account needed — your email becomes your login later.
Where does your audience live? At least one link — this is the part founders actually look at.
The founder reviews every application. If you're approved, you get an email with your partner portal.
New to this? Read the creator guide