InterFit Timer vs Fiva

InterFit Timer is a plan-driven interval training manager built for athletes who need more than a basic countdown. Unlike generic timers that only switch between exercise and rest, InterFit lets you design full workout sequences with named stages—warm-up, work intervals, active recovery, and cooldown—and run them with precise pacing, audio cues, and progress tracking. WHAT MAKES INTERFIT DIFFERENT • Multi-Stage Workout Builder — Design named stage sequences (prepare, exercise, rest, cooldown), not just a single exercise/rest loop. Free users can build up to 3 stages; Pro unlocks up to 30 stages for HIIT circuits, strength supersets, boxing rounds, and yoga flows. • Training Plan System — Save, favorite, duplicate, and reuse structured plans. Browse presets by category (HIIT, Strength, Cardio, Yoga), search your library, and start from the Today tab in one tap. • Stage Timeline Interface — Follow every stage on a clear timeline before and during your workout. The training screen highlights your current stage and auto-scrolls as you progress—no generic single-ring countdown as the core experience. • Live Activities — See your current stage, countdown, and workout progress on the Lock Screen and Dynamic Island. • Apple Health Sync — Optionally save completed interval workouts to the Health app (enable in Settings). Write-only; we do not read your Health data. • Workout History & Streaks — Review weekly volume, streak days, your most-used plan, and filter sessions by day. • Apple Watch Companion — Start recent or favorite plans from your wrist; completed sessions sync back to iPhone. • Focused Training Mode — Full-screen workout UI with pause, skip, and end controls. Voice cues, countdown sounds, and haptics are configurable in Settings. IDEAL FOR • HIIT and Tabata with custom stage design • Strength training rest management • Cardio interval ladders • Yoga and mobility timing • Home and gym sessions where structure matters FREE VS PRO • Free: up to 3 stages per plan, up to 5 custom plans, all core training features • Pro: up to 30 stages, unlimited custom plans, Pro template library, and advanced training insights InterFit Timer helps you train with intention—not just count seconds. InterFit Pro is an auto-renewing yearly subscription ($19.99/year). Payment is charged to your Apple ID account upon confirmation. Subscription automatically renews unless cancelled at least 24 hours before the end of the current period. Manage or cancel your subscription in your Apple ID Account Settings at any time. Terms of Use (EULA): https://asynch1889.github.io/timerapp-privacy/terms-of-service.html Privacy Policy: https://asynch1889.github.io/timerapp-privacy/

把手机架好，开始运动。剩下的，交给 Fiva。 Fiva 是你口袋里的 AI 健身搭档。打开摄像头，它就能实时看懂你的动作——自动计数、纠正姿势、给出评分。练完之后，还有一位 AI 教练随时待命，帮你分析运动视频、解答训练问题。 不需要昂贵的私教，不需要复杂的设备。一部手机，就是你的专属健身房。 实时 AI 运动识别 把手机放在一旁，选好运动，点击开始。Fiva 通过摄像头实时识别你的身体姿态： - 自动计数：深蹲、俯卧撑、开合跳……12 种热门运动，做一个数一个 - 姿势纠正：膝盖内扣了、背弯了，实时语音和文字提醒你调整 - 动作打分：每一次动作都有评分，帮你越练越标准 - 语音播报：计数声、鼓励语，像有个教练在旁边 全部识别在手机本地完成，无需联网，不上传任何画面。 支持多种经典运动，且还在持续增加中 深蹲 · 俯卧撑 · 开合跳 · 卷腹 · 弓步蹲 · 二头弯举 · 肩推 · 高抬腿 · 侧平举 · 臀桥 · 提踵 · 俯身划船 还可以自定义运动：创建你自己的训练项目，用摄像头录制并计时。 AI 教练，随时待命 Fiva 内置一位 AI 健身教练，你可以： - 上传运动视频，让 AI 逐帧分析你的动作质量、发现问题 - 拍照发给 AI，分析体态和训练姿势 - 文字对话，随时咨询训练计划、饮食建议、恢复方法 运动结束后，还能一键把录制的训练视频发给 AI 教练诊断——动作哪里不到位、怎么改进，几秒钟就给你答案。 运动录制 & 视频诊断 开启录制功能后，Fiva 自动录下你的训练过程。练完直接发给 AI 教练： - 帮你找到动作中的问题 - 给出具体的改进建议 - 视频可保存到相册或分享给朋友 酷炫骨骼可视化 运动时不只能看到自己，还能切换多种骨骼显示模式： - 标准骨骼线条 - X 光解剖风格 - Q 版卡通人物 - 动漫风格 让运动变得更有趣。 运动历史 & 日历打卡 每次运动都有详细记录：时长、次数、评分、AI 总结。日历视图一目了然，坚持多少天、哪天休息了，一眼看到。 隐私至上 - 所有姿态识别在手机本地完成 - 摄像头画面不上传、不存储 - 支持随时删除账户和所有数据 --- Fiva VIP 升级 VIP 解锁完整 AI 教练功能： - 无限次 AI 视频诊断 - 无限次图片分析 - 无限次文字咨询 免费用户可体验有限次数的 AI 教练功能。 订阅方案： - 月度会员：连续包月，可随时取消 - 年度会员：年付更划算 付款将通过 Apple ID 账户收取。订阅到期前 24 小时内自动续费，除非在到期前至少 24 小时关闭自动续费。你可以在 iPhone 的"设置">"Apple ID">"订阅"中管理和取消订阅。 隐私政策： https://fiwa.cc/privacy.html 用户协议：https://fiwa.cc/terms.html