Piano Companion is a music theory reference app for songwriters, producers, teachers, and students. Look up any of 1,500+ chords or 10,000+ scales instantly, build progressions, and explore harmony on iOS, Android, and Mac.
Whether you're stuck on a progression, blanking on a scale name, or just exploring — Piano Companion gives you the answer in seconds. Press the keys you know, and it tells you what you're playing.
Search by name or tap the keys you know. Piano Companion identifies what you're playing — even from a MIDI keyboard.
The Chord Progression Builder suggests chords that fit your key. Experiment with patterns, listen back, and find what sounds right.
See notes on the grand staff, fingering for both hands, intervals, degrees, and compatible scales — all in context, not abstract textbook diagrams.
Background: Romi Rain is a Canadian adult film actress who has been active in the industry since 2016. She has gained a significant following and has worked with various production companies.
Rain was an early adopter of social media as a tool for fan engagement. She used platforms like Twitter and Instagram to share glimpses of her personality, her interests (ranging from gaming to fitness), and her life behind the scenes. This transparency created a loyal following that felt a personal connection to her, moving beyond the "performer" label to become a genuine influencer. Transition to Independent Content
Luna ordered a cup of coffee and settled into a corner table, watching the rain create miniature rivers on the sidewalk. She began to write, the words flowing effortlessly as the rain drummed on outside. Time lost all meaning as she poured her heart onto the page, the café's soothing ambiance nurturing her creativity. romi rain
Hobbies: Rain has shared humorous anecdotes about her personal interests, such as her self-admitted lack of skill in golf despite trying to learn to impress a trainer.
At the heart of Romi Rain's music lies a deep exploration of themes such as love, loss, and longing. Her songs serve as a diary of emotional experiences, each note and lyric meticulously crafted to convey the complexity of human feelings. Through her work, Romi Rain invites listeners into a shared space of introspection, where the boundaries between artist and audience dissolve, and what remains is a collective experience of emotional resonance. Background: Romi Rain is a Canadian adult film
Industry Impact: Romi Rain's impact on the adult film industry can be seen in several areas:
In an industry notorious for its high burnout rate, Romi Rain is a survivor and a thriver. She started as a pizza girl in Boston and became a world-famous adult star, director, and entrepreneur. Her journey is a masterclass in branding: use your body to get attention, but use your mind to keep it. Social Media: Romi Rain is active on various
Off-camera, she is a passionate advocate for sex worker rights and frequently uses her platform to debunk stigmas surrounding the adult industry. Whether she’s traveling the world for fan conventions, hosting a podcast, or sharing a glimpse of her daily life on social media, Romi Rain remains refreshingly real.
Piano Companion is a music theory reference app that gives musicians instant access to 1,500+ chords with inversions, 10,000+ scales, a chord progression builder, reverse chord lookup, and an interactive circle of fifths. It is available on iOS, Android, and macOS, and supports 40+ languages. Whether you are a beginner learning your first chords or a professional songwriter sketching ideas, Piano Companion provides the answers you need in seconds.
Tap the piano keys you know on screen or connect a MIDI keyboard, and Piano Companion identifies every matching chord and scale in real time. This is especially useful when you hear a chord in a song but don't know its name — just play the notes and the app tells you what they form.
Piano Companion is free to download on iOS, Android, and macOS. The free version includes core chord and scale lookups. A Pro upgrade unlocks additional features including all chord inversions, the full scale library, the chord progression builder, and the circle of fifths tool.
Yes. Connect any MIDI keyboard to your device and Piano Companion will detect the notes you play, identifying chords and scales in real time. This works on iOS (via Camera Connection Kit or Bluetooth MIDI), Android (via USB OTG), and macOS (via USB or Bluetooth).
Piano Companion is available on iPhone, iPad, Android phones and tablets, and macOS. Your chord libraries sync across devices, so you can start on your phone and continue on your Mac.
Available on every major platform. Start exploring chords and scales today.
