一次小小的调校。 • 问题：任何学员都能直接切换到大人的档案，没有任何确认。修复：切换到大人档案时，现在会出现与创建时相同的大人验证题。抱歉了孩子们：算术题还是得做。 • 另外还在幕后做了几处安静的修复。你的进度、录音和曲目都原封不动。

通过首页的“我们的 App”和设置中的新入口，探索 Blue Flame Games 的更多作品。浏览我们的游戏和应用，并直接打开它们的 App Store 页面。此功能仅供在设置中确认的成人档案使用。设置按钮现在会通过旁白清楚地读出其功能。

一次大更新：Keystrike 换了新面貌，还做了一次非常彻底的体检。 • 全新外观。每个级别都有专属的插画场景，每首曲目都有对应时代的封面，这个应用终于看起来像是懂音乐的了。 • 延迟校准之前是反着应用的：你校准得越仔细，判定就越晚。我们把它掉转过来了。其实你的节奏一直都没问题。 • 弹奏中锁定 iPad（或合上 Mac）时，这期间没弹的每个音都会被算作失误。现在曲子会暂停，等你回来。 • 录音会把每个音记录两遍，再干净的演奏听起来也像回声。现在是一次按键一个音。 • “稳定性”测量的是曲子本身的节奏而不是你的节奏，于是巴赫因为是巴赫而被打分。现在它测量的是你。 • 稍晚弹出的重复音会被算到下一个音上，一个小失误变成三个错误。已修复。 • 插入耳机或 AirPods 后，麦克风可能会悄悄“失聪”。现在它会自动恢复;录音时来电会暂停这段录音，而不是给静音打分。 • 考试中手指滑过两个键，可能会跳过下一题。现在每题只算一个答案。 • 除英语外，其他语言的考试结果只显示一个孤零零的“—”。现在会显示你真实的结果。 • 现在屏幕键盘上也能弹和弦了，考试中也可以。 • 降号调的导入乐谱不再把所有音都写成升号，三连音能放进小节里，损坏的 MIDI 文件会得到礼貌的拒绝，而不是崩溃。 • 删除档案或还原备份前会先确认，还原后也可以撤销。

适配 iOS 27，并提升了兼容性和可靠性。

• 《月光》等复杂乐谱有了更大的显示空间。展开乐谱也不会丢失演奏位置，放大镜可以休息了。 • 曲目播放更流畅，暂停时减少后台处理。代码也需要喘口气。 • 修复密集乐段中 MIDI 音符、松键和踏板消息丢失的问题。 • 改进重复音和和弦中较弱声部的原声分析。录音期间速度和左右手选择保持固定。 • 首页提供明确的下一步练习和精简计划，并处理了 iPad 滚动异常。 • XP 退休了：进步现在着重于课程与巩固的技能。 • 缩短初始设置，更快开始弹奏。 • 五声音阶与基础和弦在第 5 级后解锁，更多降号和弦在第 8 级后解锁。 • 保持伴奏可听，并明确中央 C 以下音符的提示。 • 改善购买、恢复购买和等待批准流程。 • 新体验期为三天；已有七天体验保持不变。 • MIDI 导入时，鼓轨不再冒充钢琴音符。

1.2.6 版本更新 • 练习工作室新增 C、E、G、F、A 的大调与小调五声音阶，完成第 8 级后解锁。 • 完成第 8 级后还会解锁从降 C 到升 G 的高级升降号音阶。连重降号也会正确拼写；钢琴对此依然十分淡定。 • 完成第 5 级后，基础列表会加入 C 小调、G 小调、A 大调和 F 小调。 • 现在可从任何可弹奏的八度开始音阶，Keystrike 会保持该音域。中央 C 不再坚持自己是宇宙中心。 • 针对 Swift 6 加固了音频重采样与乐谱绘制流程。管线终于可以安静地待在幕后。

1.2.5 版本更新 • 下落的音符弄丢了自己的布景:随着等级提升,乐曲播放器悄悄拿走了竖直的琴键参考线和音名字母。这种逐渐淡出本是课程功能——弹得越好,搀扶越少——却误闯进了音乐厅,只剩一群无名的蓝色方块落在空荡荡的舞台上。参考线回来了,每首乐曲、每个等级都有。 • 字母现在由你做主:新增设置"下落音符上显示音名"(默认开启),可在弹奏乐曲时显示或隐藏 C-D-E 字母。课程里它们仍会随你升级自行淡出——那部分本来就是有意为之。 • 当你放慢乐曲时,滚动乐谱一直在用错误的速度丈量小节——一个运算符优先级的 bug,编译器太有礼貌没好意思指出。小节线和音符形状现在跟随你实际弹奏的速度。 iPad 与 Mac,保持同步。

修复了滚动谱面中的计时问题：视奏和备用乐谱视图有时会忽略所选速度。小节线和音符时值现在会按预期 BPM 显示，并对异常或导入曲谱使用更安全的回退。

1.2.3 版本更新 • 小小一行，大大修复：这款应用其实几个月来一直会说八种语言——英语、法语、德语、西班牙语、日语、中文、印地语和英式英语——可 App Store 只承认英语。我们把一切都本地化了，唯独漏掉了那一行"告诉苹果我们本地化了一切"的说明。现在产品页终于把八种语言全都招了。 • 深色模式藏着一个秘密的"隐形墨水"功能：入夜后保存录音，保存面板是白底白字。极简得很大胆，可惜没法用。墨水又能看见了。 • 删除录音或导入的曲子过去是即时且不可挽回的，像一场魔术，而消失的正是你的练习记录。现在两者都会先询问。 • 信息页面无视你的文字大小设置，给所有人同样的固定字号。现在它们支持动态字体，"请调大一点"终于真的会变大。 • VoiceOver 能看见播放按钮却按不动——播放/暂停控件其实只是一个假装成按钮的图形。现在它是一个真正的、带标签的按钮，VoiceOver 也能像其他人一样开始播放录音了。 iPad 与 Mac，保持同步。

What's new in 1.2.2 • Practice Studio grew up. There are now proper arpeggio drills all the way through Grade 8, and Tempo Climb finally cares whether your rhythm is even — not just whether you hit the notes. You can speed up, but you can't rush. • Ear training moved into the practice loop, so you can drill your ears in the same place you drill your fingers, instead of hunting for it in a separate corner. • Made a mess in a piece? Tap the mistake on your results screen and Keystrike builds a drill for exactly that — the missed bar, the wrong note, the rushed run — instead of making you replay the whole thing. • You can now scrub back through a performance to see precisely where it went sideways, like a replay for your own hands. • New latency wizard: if your MIDI keyboard or speakers were a hair behind the score, you can now measure and correct the delay in about a minute. • Recitals end properly. Finish a multi-piece recital and you get a real summary — every piece, its accuracy, and an honest overall grade — instead of the single-piece results screen pretending the other pieces never happened. • Tapping something locked used to sometimes fling open Settings and leave you to find the right button. Now it opens a focused unlock sheet that actually names what you tapped. • Sight-reading now draws the key signature at the clef, where it belongs, instead of quietly leaving sharps and flats to your imagination. • Your MIDI keyboard no longer "vanishes" for a blink when it reconnects — a brief hiccup was enough to make the app think you'd unplugged it. • The on-screen keyboard and the falling notes now agree on exactly how many keys there are, so notes line up with the key they actually belong to. • Octave-strict grading now applies to chord inversions too — right notes, right octave, no sneaking a chord an octave off. • Plus a one-time safety backup before big upgrades, and a long list of small fixes from a thorough shakedown of the whole app. iPad and Mac, in sync.

What's new in 1.2.1 • The grand piano started sounding like it was playing through a sock. A new acoustic-calibration tool was quietly leaving the audio in microphone mode long after you'd left it, so every note — and the metronome click — came out thin and muffled. The piano is a piano again. • One-handed practice had a ghost. Practising hands separately produced a faint echo, because two parts of the app were politely playing the same notes at each other. Now only one of them does. • "Find a C below middle C" accepted exactly one C and rejected all the others. It now accepts any C below middle C, like the words always implied. • From Grade 3, sight-reading hides the note's letter — you read the staff, not the cheat sheet. It had been peeking in a couple of places it shouldn't. • The "play with both hands" exercise could be finished with one hand. It no longer takes the shortcut. • Bach's Minuet in G turned up in Grade 2 — a bit like handing a learner driver a Ferrari. It's moved to Grade 3 where it belongs, and Grade 6 players stop being sent back to beginner pieces. • The "Up to Speed" badge unlocked in complete silence. It now actually celebrates. • Find-the-note tests stopped lighting up the answer for you first. Bold, we know. • A MIDI keyboard chattering in the background ("active sensing") was conjuring phantom notes and breaking exams — those ghosts are filtered out now. • Plus the chord exercise is finally centred, clearer labels, and a stack of small fixes from a merciless testing session. iPad and Mac, in sync.

What's new in 1.2.0 • NEW — Practice Studio. Pick one thing — scales, arpeggios, or sight-reading — and drill it on a loop until it's actually yours. There's a Tempo Climb mode that nudges the speed up every time you play it clean and politely holds it when you don't, so you can't outrun your own mistakes. It's the "play the hard bar twenty times" tool the app was missing. • NEW — Arpeggios. Scales finally have their twin: broken chords in root position and inversions, scored just like scales. • Plug in and play. Connect a MIDI keyboard and Keystrike now recognises the model and sets the right number of keys for you — no more phantom keys floating off the top of a 61-key board. You can still calibrate by hand, including acoustic pianos, by ear, through the microphone. • The MIDI connection stopped sulking. It used to go quiet after the keyboard slept or got unplugged and stay quiet until you force-quit. It now reconnects on its own. • Sight-reading learned what a sharp looks like — black-key notes finally show a sharp sign instead of impersonating a white note on the wrong line. • Reading now cares about octaves (Grade 1 and up): playing the right note three octaves off used to score 100%. The app was very supportive and completely wrong. Fixed — and it tells you which way to move. • The iPhone stopped cosplaying as a small iPad in landscape (the whole screen is used now), Free Piano came back from a brief and embarrassing disappearance, and a pile of fixes from a genuinely merciless testing session. iPad and Mac, in sync.

1.1.5 版本新增内容 • 视奏光标以前在你明明已经停止演奏后还会继续往前冲，像个没有停止键的节拍器。现在它会等你了。 • 安静练习模式的反馈出现后就一直赖在屏幕角落不走。现在它会礼貌地淡出。 • 大师级曲目在旧款 iPad 上总是在最精彩的时刻掉帧。我们让屏幕不再毫无理由地每秒重绘六十次，现在更流畅了。 • 音符反馈以前只靠红绿区分，如果你分不清这两种颜色就很不方便。现在还加入了形状和符号提示。 • 重新调整了文字缩放，更大的字号不会再把标签裁掉。 谢谢你和我们一起练习。

幕后做了些小优化——播放更流畅，练习时更少卡顿。感谢你的弹奏。

1.1.3 新内容 • 接完电话后钢琴不再永远沉默。挂断电话继续弹 — 琴键现在会自己醒过来。 • 和弦现在每根手指都算数，而不是只算最快的那根。弹三个音就记三个音。向你的左手道歉。 • 导入的 3/4 拍乐曲不再按 4/4 划分小节。圆舞曲又是圆舞曲了。 • 节拍器在长曲子里会越走越慢。它明明只有一项工作。已修复。 • 今天的练习分钟数在重启后不再清零 — 而且弹奏乐曲也能延续连胜，不只是完成课程。

Behind-the-scenes polish and a tidy-up.

What's new in 1.1.1 • Importing certain MIDI files could send the app into an infinite loop while preparing the score — an exotic time signature made a "measure" zero beats long, and the app diligently tried to lay out an endless number of them. Imports now always finish. • Looped section practice for lead-sheet pieces stopped counting your correct chords after the first time through the loop. You were playing beautifully and being scored as if you'd wandered off. Loops now credit every pass.

Keystrike 现在会说你的语言，教学也更聪明了。 • 七种语言：英语、德语、西班牙语、法语、日语、简体中文和印地语，并提供跟随设备的“系统默认”选项。 • 更聪明的教学曲线：屏幕上的音符提示会随着级别提升而淡出，从第 6 级起完全隐去，让你像真正的音乐家一样看谱演奏。弹错时我们仍会闪示正确的琴键，但在你尝试之前不会直接给出答案。 • 大量小修复与打磨。 感谢你用 Keystrike 练习。

What's new in 1.0.9 • The Grade 5 chord exam had a hair-trigger. The instant your first finger touched a key it shouted "WRONG" — before your other two fingers had even left the ground. As it happens, a C major chord is quite hard to play one note at a time. It now waits for the whole chord, like a reasonable adult. • On that same chord screen the keyboard had quietly slid off-centre, as if edging away from the judgement above it. It's back in the middle. • The chord-progression exam treated holding the previous chord a fraction too long — i.e. playing musically — as a punishable offence. Legato is legal again. • Opening your results after a lead-sheet jam could crash the app outright. The scorer kept asking for "note number minus one", which, famously, does not exist. We've talked to it.

What's new in 1.0.8 • First lesson now ends with a sound. The orientation curriculum still teaches you to sit and hold a hand shape first — but instead of finishing on a reflection card, you press any key and we tell you what it was. Six minutes of posture text before your first note was the wrong order; this is the right one. • On Home, a small "Learning what's tricky for you" badge surfaces from session one — so the personalisation signal lands during the trial week instead of waiting until after Grade 0 exam. The richer weak-spot drill card still appears later when there's enough data to make it useful. • For brand-new students who haven't started a lesson yet, the Home screen now points at "Ode to Joy is in your Pieces tab — no setup, no scoring pressure." A discovery prompt, not a path change. Existing students never see it.

What's new in 1.0.6 • The Glossary's fingering diagram used to draw a fixed C2–C4 piano regardless of the keyboard you set in Settings. The 25-key crowd kept seeing keys they don't have. The diagram now matches your actual keyboard. • iPhone Pro Max landscape was being treated like an iPad — sidebar, wide layout, 5-octave keyboard, the works. Turns out Pro Max in landscape lies and says it's "regular width", which fooled the layout into thinking it was on a tablet. We now ask both the width AND the height before unleashing iPad mode. Free piano, lessons, sections, and the keyboard finally fit on iPhone.

Tuned a few keys. The metronome has agreed to stop arguing with itself. Sight-reading drills smoother. New songs hummed approvingly during testing.

What's new in 1.0.2 • Acoustic mode used to award you 0 hits no matter how brilliantly you played. It was reading the model output's first row correctly and then helpfully reading 171 rows of padding bytes. Fixed. • Acoustic mode now shows the engraved score and the practice controls (tempo, hands, metronome) — turns out reading the music while playing it is a popular request. • Imported MIDI scores rendered the noteheads but quietly forgot the staff lines in light mode. The notes were just floating there like very confident planets. They have stems and lines again. • Long imported pieces no longer turn into a slideshow when the playhead scrolls. Cached a couple of layout reads, capped the bridge calls at 60 Hz. ProMotion iPads forgive us.

We taught MIDI imports to keep their rhythm. Dotted notes now arrive actually dotted. Time signatures show up on time. And if your file is a full jazz quartet, we'll politely ask which channel is the piano instead of guessing. There's a new "Melody only" switch for the days your right hand wants the spotlight and your left hand needs a break. Grade exams now run in strict mode — no hints, no second chances, no sympathetic glances from the metronome. You get the score at the end, like a real exam. Pretend it's the boss fight of music theory. Beat-clapping had a long talk with the timing engine. Your "almost-on-the-beat" is now officially on-the-beat (±250ms, up from ±100ms). Generous, but fair. Imported pieces also look right in dark mode (we asked them nicely), zoom to match the bundled scores, and have a fallback engraver for when one of the rendering libraries is having a moment. Happy practising.