INDEX / CONSUMER APP
ScratchAd – Daily Scratch-Off Ad App
A free mobile app where users scratch off a full-screen ad once per day using their finger and microphone, with a chance to win advertiser-sponsored prizes.
▶ WATCH THE SOURCE SEGMENT — The ultimate guide to product building with the man who changed software01 THE IDEA
ScratchAd is an advertising platform disguised as a daily ritual game. Users open the app once a day to find a full-screen brand ad printed beneath a scratch-off overlay, just like a lottery ticket. They scratch it away with their finger and blow into the microphone to clear the residue, then discover whether they've won a coupon or prize from the advertiser. The mechanic transforms a typically intrusive ad unit into the product itself — something users actively want to engage with.
The business model is pure ad sales: brands pay to own a day (or a geo-targeted slot), set their own prize pool (capped at ~5% of daily users), and design creative that works within the scratch format. Revenue scales directly with daily active users. With strong virality mechanics (referrals increase odds), a fixed daily reset creating habitual usage, and global scheduling that creates a shared cultural moment (similar to HQ Trivia's peak), this could attract massive ad inventory demand without any prize cash outlay from the platform itself.
02 THE NUMBERS
$800K – $15M
$120K + 1200h
$25K + 160h
7/10
4 · STEADY →
Mobile app development (iOS/Android), Ad sales / brand partnerships, Product design / UX, Growth marketing
03 THE VERDICT
This is a rare idea where the engagement mechanic and the monetization model are the same thing, eliminating the usual tension between user experience and revenue. The proof of concept exists (Lucktastic survives on this model), the cultural moment angle is novel and defensible, and the capital efficiency is exceptional — the platform never pays out prizes, advertisers do. The main execution risk is cold-start ad sales, but a single viral launch with one major brand sponsor could self-fund growth.
04 THE FIELD
- HQ Triviaest. 2017DECLINING · ADDED 2026-06-07
PEAKED AT 2M CONCURRENT USERS, NOW DORMANT
Live daily trivia game with cash prizes funded by VC; similar scheduled engagement mechanic but died from prize subsidy cost structure.
- Lucktasticest. 2013STEADY · ADDED 2026-06-07
NICHE PLAYER, ~5M DOWNLOADS HISTORICALLY
Free digital scratch-off app monetized by ads; closest direct analog but lacks the 'ad IS the product' daily ritual framing.
- Scratchers (Various casino apps)STEADY · ADDED 2026-06-07
FRAGMENTED, MANY SMALL PLAYERS
App store has numerous scratch-off game clones but none built explicitly around brand advertising as the core product.