Kadō, an open-source iOS habit tracker with a non-binary habit score, is now available

Introduction of Kadō Habit Tracker

Kadō, a new habit tracking application for iPhone and iPad, has been launched. This open-source tool is designed to offer a privacy-centric approach to habit tracking, distinguishing itself from other apps in the market through its core features and development philosophy.

Non-Binary Habit Scoring

A key feature of Kadō is its non-binary habit score, which is an exponential moving average of completions. This system, inspired by Loop Habit Tracker on Android, aims to provide a trend-based view of progress rather than a fragile streak that can be reset by a single missed day. This approach allows users to see their overall progress without penalizing occasional lapses.

Privacy-First Design

Kadō emphasizes user privacy by operating without accounts, subscriptions, or telemetry. All user data is stored locally using SwiftData, with optional synchronization available through the user's personal iCloud via CloudKit private database. The application also supports lossless data export in JSON or CSV formats, ensuring users retain full control over their information.

Native Apple Integration

The application is built natively for Apple's ecosystem, utilizing modern frameworks such as SwiftUI, @Observable, SwiftData, CloudKit, WidgetKit, and App Intents. This native development avoids cross-platform layers and third-party dependencies, aiming for optimal performance and integration with iOS features like Home Screen and Lock Screen widgets, Siri, and Shortcuts.

Addressing Market Gaps

Kadō positions itself as an alternative to existing habit trackers by combining the non-binary scoring algorithm of the Android-exclusive Loop Habit Tracker with a native, open-source, and privacy-focused implementation for iOS. It aims to fill a gap for users seeking a free, open-source, and privacy-respecting habit tracker on Apple devices, contrasting with closed-source or freemium options.