Simple Tools.
Built for Focus.
We build iOS apps for people who value their time. No accounts to create. No data harvested on third-party servers. No subscription dialogs every other week. Just lean, native tools that do exactly what they promise — and deliberately nothing more. All your data stays on your device and in your own iCloud. We never see it.
See Our Apps Three principles.
Every decision flows from them.
Focused by Design
Every feature earns its place through deliberate consideration — and many ideas are left out. No onboarding mazes. No upsell popups every three days. LeanTools are quiet apps that stay out of your way so you can focus on what actually matters. We think "what can we remove?" before we ask "what can we add?"
Privacy by Default
100% iCloud infrastructure. No third-party analytics SDKs, no mystery telemetry, no account required. Your data belongs to you — it lives in your ecosystem, on your device, under your control. This is not a feature we added. It is a constraint we imposed on ourselves from day one, and one we will never walk back.
Native Apple, No Compromises
Built from scratch in SwiftUI for iPhone and iPad. Fast, fluid animations. Dynamic Type, dark mode, system integrations that just work. Not a cross-platform wrapper dressed up to look native — the real thing. Because your hardware deserves software that was built for it.
A growing family of
lean, focused tools.
LeanTask
The lean task manager for iPhone and iPad.
Priorities, due dates, notes, and iCloud sharing — everything a focused workflow needs and nothing it doesn't. Organize work across multiple lists, share them with family or your team, and assign tasks to collaborators. No account required, no third-party cloud. Free to start, with LeanTask Plus as an optional upgrade for those who want more.
LeanBooks
Your personal book library, always with you.
Catalogue your home library, track lending in both directions, and share your collection with your household — all via iCloud, no account required. Add books by ISBN scan or title search, manage a wishlist, and organise by author and shelf. Built on the same lean principles as LeanTask.