联系我们

使用中遇到问题或有建议，请发邮件到 contact@4dpocket.cn。方便的话，请写明手机型号和系统版本。

常见问题

手机怎么摆放？

• 训练使用前置摄像头（设备没有前置摄像头时用后置），只支持竖屏。把手机竖着放稳，屏幕朝向你。
• 站到全身都能进入画面的位置，从肩膀到双脚。计数依靠肩膀和髋部；脚踝用来判断是否双脚起跳，所以请把脚也拍进画面。
• 识别到你时，画面上的肩、髋、脚踝处会出现绿色圆点。
• 应用只跟踪一个人，画面里最好只有正在跳绳的人。
• 画面显示“无摄像头”时，请到系统设置中允许“欢乐跳绳”使用摄像头。

哪些跳法会被计数？

目前只计双脚同时起跳的跳法。左右脚交替跳和拳击步暂不支持；两只脚明显不在同一高度的一跳会被当作单脚跳，不计数。

“自由”“定时”“定量”有什么区别？

• 自由：不限时间和个数，点“停止”结束。
• 定时：设定时长，倒计时结束时自动停止。
• 定量：设定个数，跳够即自动停止，成绩是所用的时间。

在首页选择模式，用 − 和 + 调整时长或个数，也可以点数字直接输入。定时和定量开始前会先倒数 3、2、1。

每日目标和连续打卡怎么算？

• 首页的圆环显示今天已跳的个数和每日目标。点一下这张卡片即可修改“每日目标”（默认 100 个）。每位成员有自己的目标。
• 连续打卡天数：从今天往前数，连续达到每日目标的天数。今天还没达标，不会打断之前的连续记录。达标与否按当前的每日目标计算，过去的日子也一样。
• 点首页的月历按钮进入“月历打卡”：查看每月的达标天数、跳绳总数、训练分钟和最佳连击，点一下某天查看当天的记录。皇冠标出本月跳得最多的一天，闪电标出本月最佳连击的一天。

怎么添加、切换、删除家庭成员？

点首页上显示名字的按钮，进入“用户”页面（第一位成员默认叫“我”）。

• 添加：点右上角的“+”，输入姓名，点“添加”。
• 切换：点一下成员的名字，打勾的就是当前成员，之后的训练都记在这位成员名下。
• 删除：在名字上向左滑，点“删除”。该成员的全部记录会一起删除，且无法恢复。至少需要保留一位用户。

数据存在哪里？怎么删除？

• 所有记录只保存在你手机上的“欢乐跳绳”里，不会上传，我们也看不到。
• 删除一条记录：在“月历打卡”中点日期，长按要删的记录，在“删除这条记录？”中点“删除”。（点一下记录是分享。）
• 删除一位成员及其全部记录：见上一条。
• 删除全部数据：卸载应用。

应用没有账号和云同步，删除后无法恢复。详见隐私政策。

怎么录制训练视频？存在哪里？

• 在训练画面点“REC”，按钮变红即已开启，再点一次关闭。训练中随时开关都立即生效；开关状态会被记住，下次训练沿用。
• 录下的是摄像头画面本身，不含声音，也不含屏幕上的计数。
• iOS：训练结束后视频存入“照片”App，第一次保存时会请求“添加到照片”的权限。
• Android：视频存入相册的 Movies/happyjump 文件夹。
• 成绩卡片上会提示视频是否保存成功。

Contact us

Questions or suggestions? Email contact@4dpocket.cn. If you can, include your phone model and system version.

FAQ

How should I set up my phone?

• Sessions use the front camera (the back camera on a device without one), in portrait only. Stand the phone upright and steady, screen facing you.
• Step back until your whole body is in the picture, from shoulders to feet. Counting follows your shoulders and hips; your ankles are used to check that both feet leave the ground together, so keep your feet in the picture too.
• When the app sees you, green dots appear on your shoulders, hips and ankles.
• The app follows one person, so it works best with only the jumper in the picture.
• If the screen says “No camera”, allow Happy Jump to use the camera in your system settings.

Which jumps are counted?

Two-foot jumps only, for now. Alternating-foot jumps and the boxer step are not supported yet; a jump where your feet are clearly at different heights is treated as a one-foot hop and not counted.

What are Free, Timed and Target?

• Free: no time or jump limit; tap “Stop” to finish.
• Timed: set a time; the session stops by itself when the countdown ends.
• Target: set a number of jumps; the session stops by itself when you reach it, and your result is the time it took.

Pick the mode on the home screen, adjust the time or count with − and +, or tap the number to type it. Timed and Target sessions start with a 3, 2, 1 countdown.

How do the daily goal and streak work?

• The ring on the home screen shows today’s jumps against your daily goal. Tap that card to change the “Daily goal” (100 by default). Each member has their own goal.
• Your streak is the number of days in a row, counting back from today, on which you reached your goal. Not having reached it yet today doesn’t break the streak. Days are judged against your current goal, past days included.
• Tap the calendar button on the home screen to open the “Check-in Calendar”: each month’s goal days, total jumps, minutes and best combo. Tap a day to see its sessions. A crown marks the month’s day with the most jumps, a bolt the day with the best combo.

How do I add, switch or delete family members?

Tap the button with your name on the home screen to open “Users” (the first member is called “Me”).

• Add: tap “+” at the top right, type a name, tap “Add”.
• Switch: tap a name; the checkmark shows the current member, and new sessions are saved under them.
• Delete: swipe left on a name and tap “Delete”. All of that member’s sessions are deleted with them, and this can’t be undone. At least one user must remain.

Where is my data, and how do I delete it?

• All records are stored only in Happy Jump on your phone. Nothing is uploaded, and we can’t see it.
• Delete one session: in the “Check-in Calendar”, tap the day, long-press the session, then tap “Delete” under “Delete this session?”. (A plain tap on a session shares it.)
• Delete a member and all their sessions: see above.
• Delete everything: uninstall the app.

There is no account or cloud sync, so deleted data can’t be restored. See the Privacy Policy for details.

How do I record a session video, and where does it go?

• Tap “REC” on the session screen: red means on; tap again to turn it off. You can switch it during a session and it takes effect at once; the setting is remembered for the next session.
• The video is the camera picture itself, with no sound and without the on-screen count.
• iOS: when the session ends, the video is saved to the Photos app; the first time, you’ll be asked for permission to add to Photos.
• Android: the video is saved to the Movies/happyjump folder in your gallery.
• The result card tells you whether the video was saved.