reddit · SideProject · 10-12 04:50 55 分 ← 返回列表

I built a BlackBerry Bold-style keyboard for Android, with a tiny on-device AI for autocorrect

I got nostalgic over the weekend and missed my old BlackBerry, so I built a keyboard that looks and feels like it on Android. It has the curved keys, the small Alt symbols in the corners, and a trackpad bar for moving the cursor and selecting text. The modern bit is an optional small language model (Gemma 3 270M) that runs on the phone. It reads the sentence around a word before fixing it, so it catches things like "form" for "from". It's off by default and it's a ~240 MB download. Ever

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痛点：触屏打字缺少黑莓实体键盘的手感与快捷键效率，而主流输入法的自动纠错不结合上下文、且需联网上传输入内容

目标用户：黑莓/QWERTY 实体键盘怀旧用户、追求隐私与离线输入的 Android 极客、Unihertz Titan 与 Clicks 外接键盘用户

证据：I got nostalgic over the weekend and missed my old BlackBerry, so I built a keyboard that looks and feels like it on Android. / It has the curved keys, the small Alt symbols in the corners, and a trackpad bar... / an optional small language model (Gemma 3 270M) that runs on the phone... It's off by default and it's a ~240 MB download. Everything stays on the phone. / It's open source (Apache-2.0) and a pre-release, tested on one phone so far.（全文无任何付费意愿或收入数据）

变现：Google Play 一次性买断（$3.99–5.99）或免费版+主题/布局/宏按键包内购；把「端侧小模型上下文纠错」抽成 SDK 授权给需要离线隐私输入的应用（笔记、邮件、金融类 App）

MVP：两周内：把现有开源版打包为 Play 上架版本，只保留 3 项差异点（黑莓复古皮肤+触控板光标条+离线 Gemma 3 270M 纠错），加一个 $4.99 解锁版与 3 款配色主题，落地页强调「输入内容永不出手机」，在 r/blackberry、r/androidapps、Unihertz/Clicks 社群冷启动收集首批付费转化

竞品：Gboard、Microsoft SwiftKey、Fleksy、Typewise、Ulauncher 类复古键盘、Unihertz Titan / Clicks 实体键盘硬件

摘要：开发者因怀念黑莓，周末做了个 Android 复古 Bold 键盘，含曲面按键、触控板光标条和 Key2 式 Speed 快捷键，并可选装端侧 Gemma 3 270M（约 240MB）做上下文纠错，全部离线运行，开源 Apache-2.0，仅在单台手机上测试过。帖子本身没有付费意愿或收入证据，属于情怀驱动的作品发布；但「离线隐私输入 + 实体键盘效率」这个细分存在明确的小众人群与硬件端已验证的付费先例，单人两周内可做成付费上架版本。