Opal

What it does

Opal helps you reclaim time and focus by blocking distracting apps and tracking your screen time. Loved by millions of iOS users (200+ million hours saved), it’s finally on Android to help you take control of your phone.

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  Opal2021 · opalapp.com · ▲282

  A simple, student-friendly phone policy powered by our app.

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  RescueTime for Mobile2018 · rescuetime.com · ▲142

  Automatically track screen time and build better habits

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  timestic2021 · timestic.web.app · ▲82

  Time tracking made easy

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  The Focus App2019 · play.google.com · ▲70

  Android App to help you become your most productive self

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  TimesApp2018 · play.google.com · ▲68

  Take control of your phone usage

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  ScreenBreakJun 2026 · play.google.com · ▲8

  Stop doom-scrolling. Free Android screen-time control.

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  Lofi Cities – Pixel-art city nights with browser-generated lofi▲319

  Endless lofi beats composed live in your browser, over pixel-art nights in Paris, Tokyo, New York, Hong Kong, Sydney, San Francisco and more. Free, no sign-up.

  Work · 24d ago · loficities.com

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  Smooth Recorder▲257

  Mac screen recordings that look edited when you hit stop

  Work · 18d ago · smoothrecorder.com

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  Figma Specs▲222

  A container for your context that lives on the Figma canvas

  Work · 3d ago · figma.com

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  The rarest tech books and docs you've probably never read▲190

  Work · 12d ago · readrare.com

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  Trace▲1,555

  Workflow Automations for the Human 👾 AI Workforce

  AI · 2025 · trace.so

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  I spent 6 years building a ridiculous wooden pixel display▲1,145

  I built the world's most impractical 1000-pixel display and anyone in the world can draw on it. It draws a single pixel at a time and takes 30-60 minutes to complete a single image. Anyone can participate in the project by voting for the next image to be drawn, and submitting images. https://kilopx.com/

  Work · 2025 · benholmen.com

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  Indy AI by Contra▲1,070

  Job boards are dead. Your network is alive

  AI · 2025 · contra.com

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  Kitten TTS – 25MB CPU-Only, Open-Source TTS Model▲1,003

  Kitten TTS is an open-source series of tiny and expressive text-to-speech models for on-device applications. We are excited to launch a preview of our smallest model, which is less than 25 MB. This model has 15M parameters. This release supports English text-to-speech applications in eight voices: four male and four female. The model is quantized to int8 + fp16, and it uses onnx for runtime. The model is designed to run literally anywhere eg. raspberry pi, low-end smartphones, wearables, browsers etc. No GPU required! We're releasing this to give early users a sense of the latency and voices…

  AI · 2025 · github.com

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  I was curious about spherical helix, ended up making this visualization▲865

  I was wondering how I can arrange objects along a spherical helix path, and read some articles on it. I ended up learning about parametric equations again, and make this visualization to document what I learned: https://visualrambling.space/moving-objects-in-3d/ feel free to visit and let me know what you think!

  Life & fun · 2025 · visualrambling.space

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  The current sky at your approximate location, as a CSS gradient▲788

  For HTML Day 2025 [1], I made a web service that displays the current sky at your approximate location as a CSS gradient. Colours are simulated on-demand using atmospheric absorption and scattering coefficients. Updates every minute, without the use of client-side JavaScript. Source code and additional information is available on GitHub: https://github.com/dnlzro/horizon [1] https://html.energy/html-day/2025/index.html

  Dev tools · 2025 · sky.dlazaro.ca