FreeMusicTools
Free browser music tools — nightcore, 8D, slowed + reverb, MP3 to MIDI. No signup, no uploads.
What is FreeMusicTools?
FreeMusicTools is a free collection of browser-based music tools for creators who want quick private edits without installing a DAW.
Effects include a Nightcore Maker (speed and pitch), Sped Up Audio for TikTok-style tracks, an 8D Audio Converter, and Slowed and Reverb for dreamy headphone-friendly edits.
Converters and editors include MP3 to MIDI with local note detection, an Audio Visualizer that exports MP4, an MP3 Tag Editor for title, artist, cover and lyrics, and a Pitch Shifter that changes key while keeping tempo.
Everything runs locally in your browser. There is no account, files are not uploaded to a server, and there is no watermark. The tools are completely free.
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FounderPlaybooks.
What other founders did to grow.
2722 dispatches from hundreds of founders, pulled from the week's best podcasts.
Sometimes people misinterpret that as 'oh I have to do all of these things, I have to tick all of these boxes in order to be successful.' No, absolutely not. You have to play to your strengths and to your company stage and your priorities. If you try to overreach and do everything, you're going to do it all really badly.
The Mobile Growth Stack is a menu, not a checklist
Andy's framework encapsulates everything that could form part of a mobile growth strategy — but its purpose is to help teams pick, not pile on. Stage-appropriate focus beats comprehensive coverage; early stages reward big swings on PMF, not sophisticated experimentation infrastructure.
the first thing you're going to do is turn that into a Twitter thread and we're going to think about what is the main headline what's the interesting hook... if you're working on a feature and it doesn't make for a good Twitter thread you better have like a really good reason to be building it
Write the Twitter thread before writing the code
ElevenLabs requires every new feature to be distilled into a Twitter thread before a line of code is written. If you cannot write a compelling hook and three sub-tweets about what you are building, you do not yet understand why it matters and users will not either. This acts as a pre-build virality test that filters out features too incremental to earn attention and forces clarity on the core value proposition.
There's a play for whatever you're stuck on.
Read all 2722 playbooks