// Writing
The Raedus Labs Blog
Notes on AI-native products, open source, and building tools that get out of your way.
A Mood Tracker With No Account, Private By Default
Most mood trackers want your email before your first entry. Here's how no-account, on-device tracking works, and where private apps actually keep your data.
Mood Trackers Without a Subscription (Free, No Paywall)
Tired of paying monthly to log your feelings? Here's which mood trackers charge a subscription, which are genuinely free, and which have no paywall.
The Best Open-Source Mood Trackers for Android (2026)
The best open-source mood trackers for Android in 2026, checked on F-Droid. Private, no-account, auditable apps compared, flaws included.
The Free Daylio Alternative for Android That's Open Source
Want a free Daylio alternative on Android? SoulSync is open-source, keeps every feature free, and stores data on-device. An honest side-by-side.
I Shipped a Complete AI Mobile App Using Claude Code Subagents and Parallel Worktrees
How Claude Code subagents, fan-out workflows, and parallel git worktrees built a complete AI mobile app, plus three operational failures.
Best Free App Blockers for Android (2026)
The best free app blockers for Android in 2026, tested honestly. Open-source, no-subscription, privacy-first picks for screen time and ADHD focus.
Block YouTube Shorts & Reels on Android (Keep the App)
Block YouTube Shorts and Instagram Reels on Android without blocking the whole app. Free, open-source, no root. Keep DMs and search, kill the feed.
Free one sec Alternative for Android (Open Source) [2026]
one sec pro costs ~$20/yr and is iOS-first. Nudge brings the same delay-before-opening pause to Android for free, open source, with zero tracking.
Free Opal Alternative for Android (No $99/yr Subscription)
Opal's Android app is paid (~$99/yr) and feature-limited. Nudge is the free, open-source Android alternative: delay-to-open, time budgets, zero tracking.
Open-Source App Blocker for Android With No Internet Permission
Nudge is an open-source app blocker for Android with no internet permission. It literally can't phone home: no account, no tracking, fully auditable code. Free.
The Best Free ADHD App Blocker for Android
Can't stop scrolling? It's not willpower. Nudge is a free ADHD app blocker for Android, open source, that adds a pause before the dopamine loop closes.