Acquire users who stay, not installs that churn.
Pay for retention, not for a one-tap install
A cheap install tells you nothing. A user who reaches level 5 or makes a first purchase is a user who stuck around. of/fair lets you attach a payout to each of those milestones, so your spend selects for engaged, longer-retained, higher-LTV users, and filters out the ones who bounce.
- Reward deep-funnel events that predict retention
- Each checkpoint pays its own amount, matched by event key
- Verified independently, so every paid user is a real one
- Reversals flow back through the same pipeline automatically
Reach the Summit
CPE · iOS & Android · US, CA, UK
Everything you need to buy outcomes
Precise targeting
Reach users by platform, country, and device class. Web-incent, desktop-only offers never leak onto incompatible surfaces.
Multi-checkpoint offers
Model the whole funnel: install, level 3, first purchase. Author checkpoints as portions of a total or absolute per-event payouts.
Attribution your way
Ingest AppsFlyer and Adjust postbacks, or send your own HMAC-signed S2S. One primary source per campaign, the other corroborates.
Budgets & caps
Set a UA budget, per-user frequency caps, and offer-level daily conversion caps. Serving halts the moment budget hits zero.
Fraud built in
Suspicious conversions are held in review, never auto-paid. You spend on real users, not bots or duplicate events.
Extended reach
Your demand can syndicate to partner networks through a signed feed and S2S, net of margin, for verified scale.
Verified through the source you already trust
Configure one primary source of truth per campaign. The other is recorded as a corroborating signal, never a second payout. Spend reconciles exactly against every conversion and postback.
- AppsFlyer & Adjust: we receive your partner postbacks
- Our signed S2S: HMAC over canonical params + timestamp
- Nonce replay protection and a per-advertiser secret
- MMP rejection reasons feed fraud scoring, not approval
Source A
Your MMP
AppsFlyer · Adjust, postback pushed to us
Source B
Our signed S2S
POST /v1/postback, HMAC + nonce
of/fair verifies
- · one primary source per campaign
- · the other corroborates, never a 2nd payout
- · deduped by one idempotency key
- · 5-layer fraud, then reward
Signed & replay-proof
Postbacks are HMAC-signed over canonical params and timestamped, with nonce replay protection and a per-advertiser machine secret.
Exact accounting
Spend is tracked in integer micro-units and reconciles against conversions and postbacks, with no floating-point drift, ever.
Explainable decisions
Every fraud decision logs the ruleset version and the signals that fired. Disputable, auditable, never a black box.
Put budget behind users who stay.
Launch a campaign with multi-checkpoint payouts and verification on day one.