Opus Great vs Classical Mood

Opus Great is a beautifully simple library for PDF sheet music — built for musicians who want their scores organized, searchable, and ready to play. Whether you study piano, violin, or any other instrument, Opus Great turns your scattered PDF downloads into a clean library that syncs across all your devices through your private iCloud. KEY FEATURES • Organize with Ease Sort scores by Inbox, Favorites, and custom collections. Build music books for recitals, exams, or daily practice. • Quick Search Powerful search and filters help you find any score by title or composer in seconds. • Favorites Star the pieces you play most often for one-tap access from the Discover tab. • Book Management Create curated collections (e.g. "Recital 2026" or "Bach Inventions") and arrange scores in any order. • Personalized Settings Light or dark theme, English or Chinese interface, and storage usage at a glance. • iCloud Sync Your library lives in your private iCloud account — no logins, no servers, no subscriptions. Open the same score on iPhone or iPad without lifting a finger. DESIGNED FOR PRACTICE AND PERFORMANCE • Smart PDF reader with three layouts: continuous scroll, single page, and two-up • Full-screen performance mode hides everything except the music • Brightness overlay for late-night practice • Reading progress remembered automatically — pick up where you left off • Import multiple PDFs at once from Files, or scan paper scores with your camera PRIVATE BY DESIGN Opus Great does not collect, track, or upload your data. Everything lives on your device and your iCloud account. There is no account to create, no analytics, no ads. FREE TO TRY, ONE-TIME UPGRADE Download and use Opus Great free with up to 10 scores. Unlock unlimited scores and all future updates with a single $9.99 lifetime upgrade. No subscriptions, no recurring charges. — — For pianists, violinists, and every musician who has been waiting for an "Apple Books for sheet music" — Opus Great is here.

Classical Mood recommends the perfect classical piece — and the perfect recording of it — for this exact moment. WHY IT'S DIFFERENT Most apps stop at recommending a work. Classical Mood goes further: it chooses a specific recording and explains why that performer's interpretation suits your current state. SMART RECOMMENDATIONS • Reads your recent activity, sleep, and heart rate from Apple Health (with your permission) • Considers the time of day, weather, and your location • AI explains why this piece and this recording fit you right now CHOOSE YOUR MOOD Prefer to decide for yourself? Pick one of 9 moods and 5 energy levels and get a matching recommendation instantly. CONCERT PLAYLISTS Going to a concert? Search its name or snap a photo of the poster — the app recognizes the program and builds an Apple Music playlist of the program plus similar works you'll love. YOUR LISTENING HISTORY Every recommendation from the past week is saved, ready to replay anytime. FLEXIBLE AI ENGINES • Apple Intelligence — on-device and private, no setup required • Groq (free API key) or Anthropic Claude (your own key) as alternatives WORKS WITH YOUR MUSIC APP Open recommendations in Apple Music or YouTube Music. Playlists are created directly in your Apple Music library. PRIVACY FIRST Health data is read on your device and never stored on our servers. API keys stay in your device's keychain. No accounts, no tracking. Note: Apple Intelligence requires a compatible device. Playlist creation requires an Apple Music subscription.