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Harmodus Piano is an iOS app that lets you seamlessly switch between Equal Temperament and Just Intonation mid-performance to experience true acoustic harmony. Built for musicians, it features a hardcore polyrhythm metronome that fully supports odd time signatures and includes a per-beat volume mixer for ultimate rhythm control. Complete with external MIDI keyboard support and a smart real-time chord display, it’s the perfect tool for ear training and music theory exploration!
Hi Product Hunt! 👋 I'm a solo indie developer from Japan. 🇯🇵
I’ve always been fascinated by the pure, acoustically perfect resonance of Just Intonation. However, I was frustrated that I couldn't find a good iOS piano app that allows musicians to easily switch between Equal Temperament and Just Intonation to actually hear and compare the difference.
So, I spent the last few months building Harmodus Piano. 🎹
Key features: ✨ 1-Tap Tuning Switch: Instantly jump between tunings mid-performance. 🥁 Hardcore Metronome: Designed for pros. It fully supports odd time signatures, complex polyrhythms, and even features a per-beat volume mixer so you can fine-tune the accents perfectly. 🎹 MIDI Support: Connect your external MIDI keyboard. 🎸 Smart Chord Display: Real-time chord names on a clean UI, great for practicing and ear training.
Whether you're a music theory nerd, a microtonal enthusiast, or just curious about how "true harmony" sounds, I'd love for you to try it out!
I'll be hanging out in the comments all day. Let me know what you think or if you have any questions! 🙏
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About Harmodus Piano - Pure Tuning on Product Hunt
“Just Intonation piano & pro polyrhythm metronome”
Harmodus Piano - Pure Tuning was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #160 on the daily leaderboard. Harmodus Piano is an iOS app that lets you seamlessly switch between Equal Temperament and Just Intonation mid-performance to experience true acoustic harmony. Built for musicians, it features a hardcore polyrhythm metronome that fully supports odd time signatures and includes a per-beat volume mixer for ultimate rhythm control. Complete with external MIDI keyboard support and a smart real-time chord display, it’s the perfect tool for ear training and music theory exploration!
Harmodus Piano - Pure Tuning was featured in Music (53.5k followers), Education (79k followers) and Audio (2.1k followers) on Product Hunt. Together, these topics include over 46k products, making this a competitive space to launch in.
Who hunted Harmodus Piano - Pure Tuning?
Harmodus Piano - Pure Tuning was hunted by MusicaTechLab（むじかてっくらぼ）. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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MusicaTechLab（むじかてっくらぼ）