SongSync Vocal DNA vs 吸音材ナビ 残響・RT60測定

SongSync AI is the private vocal coach for people who want to practice singing — quietly, at home, without uploading anything to a social feed and without touching anyone else's copyrighted music. WHY SONGSYNC • 5-dimension DNA score on every take: pitch (YIN cents), rhythm (Whisper-aligned timing), vibrato (long-tail stability), breath (RMS pause analysis), expression (AI). Result in ≈ 60 seconds. • Composition Rehearsal Loop (industry first): take 1 → DNA score → tap any weak axis → AI shows the exact weak seconds → you re-record → Δ chart shows your gain. Repeat until you hit your target. • Real-time pitch meter while you sing: ±50 cents at 30 fps, with a red warning the moment you drift more than 20 cents. • Weak-spot loop: practice a single phrase on repeat with the reference pitch line drawn under your voice. • DNA history: 7-day, 30-day, 365-day curves on every axis so you can prove to yourself that you actually got better. THE LIBRARY (CLEAN BY DESIGN) • 50 public-domain songs at launch: Twinkle, Greensleeves, Amazing Grace, Frère Jacques, Vivaldi & Caccini arias, Happy Birthday (EU PD 1893 melody), folk and national anthems, plus CC0 backing tracks from musopen.org and freemusicarchive.org. • Upload your own backing tracks (mp3 / m4a, ≤ 50 MB). Strictly private. Strictly your own. • No commercial / streaming songs are ever bundled — not even a 30-second demo. No social feed. No public profile. No leaderboards. PRIVACY BY DESIGN • Microphone permission is requested ONLY when you tap Record, and only while you record (the OS-level orange mic dot is your proof). • Audio recordings stay on your device. Whisper transcription happens over TLS to our self-hosted gateway and the audio bytes are dropped after the call. • No tracking, no ad networks, no IDFA prompt. • Account delete is one tap and cascades within 30 days (GDPR Edge Function), including device-local audio files. PRICING • Free tier: 3 practices / day, 14-day DNA history, full real-time pitch meter, weak-spot loop limited to 5 / day. • Pro: $4.99 / month or $19.99 / year (save 67%), with a 7-day free trial. Pro unlocks unlimited practice, full-year DNA history, unlimited weak-spot loops, and the complete Composition Rehearsal Loop. Built by a single indie developer chasing 20+ honest MVPs in 2026. No VC, no growth hacks, no harvested data — just careful design for people who care about their voice. Subscriptions auto-renew until canceled. Manage and cancel in App Store account settings. Pricing varies by region. LEGAL SongSync includes only public-domain works, CC0 / openly licensed backing tracks, your own voice recordings, and audio you upload that you have the right to use. We do not provide copyrighted music. You are responsible for the rights of anything you upload. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://songsync.sanva.top/privacy SUPPORT https://songsync.sanva.top/support

「録った声がこもる」「部屋が響きすぎる」——その原因、数字で確かめてみませんか？ 吸音材ナビは、拍手一発で部屋の残響時間（RT60）を測定し、宅録・配信に適した響きかどうかを判定するアプリです。吸音材を買う前に、あなたの部屋に本当に必要な量と貼る場所がわかります。 ■ 使い方はかんたん 1. 部屋の中央でアプリを起動 2. 手を1回、強く叩く 3. 減衰カーブと残響時間（RT60）が表示され、用途別の判定が出ます ■ 無料でできること ・残響時間（RT60）の測定（回数無制限） ・低域・中域・高域の帯域別表示 ・配信/ボーカル録音/ミックスの用途別判定と解釈 ・複数回測定のばらつき表示 ■ Pro（買い切り）で解放 ・必要な吸音材の量（平米・枚数・材料別換算） ・貼る場所の配置ガイド（マイク正面・一次反射点など） ・予算目安 ・PDFレポート出力 ・測定履歴の保存とBefore/After比較（貼る前後の効果を数値で確認） ■ ご注意 本アプリは部屋の中の響き（吸音）を測定するアプリです。壁の遮音性能（外への音漏れ）は測定できません。音漏れが気になる方は同じ開発者の「音漏れチェッカー Otomore」をご利用ください。 測定はiPhone内蔵マイクによる簡易測定で、お部屋の傾向を知るための目安です。業務用測定器の代替ではありません。音声は端末内でのみ解析され、保存・送信されることはありません。