Crafting calm in a noisy digital world.
dofun.app is an independent app studio dedicated to single-purpose, privacy-first software built for real everyday utility.
Why we started dofun.app
Every day, people open their phones to perform simple tasks: split a dinner receipt with coworkers, show food allergy restrictions while dining in Tokyo, or blur a sensitive phone number before posting a screenshot to Slack.
Yet most apps in the App Store today demand an account creation, bombard users with full-screen ads, track location data, and trap customers into monthly recurring subscriptions for tools that should just work quietly.
We believe there is a better way. We design software grounded in Calm Technology: tools that respect your attention, process data entirely on your Apple silicon, and never treat your privacy as a bargaining chip.
Our Core Commitments
100% On-Device Privacy
We don't operate cloud databases storing your receipts, health allergies, or private images. Computation is local, safe, and works offline.
Zero Ads & Trackers
No interstitial video ads, no analytics SDKs from third-party brokers. What you see is what you get.
Single-Task Focus
Each utility solves exactly one practical problem without bloat. You open it, get your job done in 30 seconds, and return to life.
Fair, Transparent Pricing
Free trials and accessible one-time lifetime options. No deceptive renewal tricks or dark pattern cancellation flows.
Our Flagship Tools
Explore our primary applications.
ItemizeReceipt
Turn a receipt into clear items for reimbursement.
AllergyCard
A clear allergy info card for travel and emergencies.
SnapRedact
Hide sensitive info in screenshots before you share.
Get in touch with us
We read every email and welcome thoughtful feedback, feature suggestions, or press inquiries.