Bench
Available · macOS · Mac App Store
A native macOS developer toolbox in one offline window: JSON, JWT, regex, hashes, UUIDs, video conversion, and more.
$14.99 Pro unlock
Mac App Store
We build small, focused software for Apple platforms.
Zentsu LLC is a software studio working on native tools and apps for macOS and iOS. We favor private-by-default design, one-time purchases where the model fits, and shipping software that does a clear job without asking for an account.
Apps
Learn Japanese: 2,000 Words
Coming soon · iPhone
Practice Japanese vocabulary with spoken words, pictures and spaced review. Start with 500 words free.
Overload
Not on the App Store · iPhone
Log your lifts and see the next target for every set. Add reps at the same weight, then add weight once every set reaches the top of its range.
How we build
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Native first
Mac and iOS apps written in Swift and SwiftUI, not cross-platform shells wrapped around a web view.
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Private by default
Our apps work without a Zentsu account or telemetry. When an app syncs, it uses your private iCloud storage instead of a Zentsu server.
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Pay once
One-time purchases over subscriptions, where the model fits. The version you bought keeps working.
Contact
For press, partnerships, or general inquiries: hello@zentsu.app.