Comparison

JumpEye vs JAPURI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

JumpEye

This app analyzes vertical jump height by calculating flight time using your device's high-speed camera. Record or import videos, mark takeoff and landing frames, and get an automatic jump height calculation. It also offers a Rebound Jump Index for continuous jumping analysis.

Highlights
  • Vertical jump height calculation
  • Flight time measurement
  • High-speed camera integration
  • Video import from Photo Library
  • Manual frame marking (takeoff/landing)
  • Rebound Jump Index calculation
  • Automatic file naming and editing
Read full description

JUMP EYE ◆Attention on using slow videos in the camera roll◆ 

The playback speed of slow videos saved in the camera roll will be edited to normal speed forcibly instead of slow at the beginning and the end of the video. If you load the video as it is, the playback speed at the beginning and end of the video will not be slow in JumpEye as well, so you will not be able to measure the video accurately.

To fix this issue, go to the Photos app, select the video you want to import and tap the Edit button in the upper right corner of the playback screen.
The barcode white lines displayed at the bottom of the video on the edit screen will be narrower at the left and right edges than at the center.
By widening the spacing between the rightmost and leftmost white lines, you can slow down the playback speed of all of your videos.
After editing, please load the video in JumpEye for measurement.

In addition, if you can not start the camera application in JumpEye, please open the settings application and search "JumpEye" in the search window.
Tap "JumpEye" in the search results, you will go to the privacy settings screen of JumpEye.
After that, please give permission for all photos, microphone, camera. □General Information□ JUMP EYE has been developed to calculate the vertical jump height by using the flight time. Use your iPhone's high-speed camera to measure the flight time during a vertical jump. □Procedure□ 1. Open JUMP EYE and adjust the camera’s focus on an athlete's feet. 2. Simply record videos of a vertical jump using Slo-Mo (120/240 fps) or import the ones you want from the Photo Library. 3. Once we playback the video, we have to then manually go through frame by frame to identify and mark the takeoff and landing frames (press “start” and “stop”). 4. The formula then automatically calculates the duration of the flight and the jump height. □Main characteristics□ ・Videos are given an automatic file name (hh:mm:ss), which can be edited by holding down on the icon for one second, then we can rename or delete the file. ・After marking the frames, the jump height is automatically labelled after the file name. ・You can also import movies from the Photo Library. ・Manual focus makes feet and floor easily identifiable and precise. ・You can playback the movie in 3 ways (manual slider, frame by frame, and 10 frame mode). ・The pinch-to-zoom feature is available. ・The Rebound Jump Index (RJI) can be calculated by continuous jumping (press “RJindex”). □Note□ The equation to calculate jump height is justified only if the center of mass height is the same at takeoff and landing. Therefore, if you land on the ground in a crouched position, your jump height will be overestimated.

About

JAPURI

This app provides members of the Masters Swimming Association with access to association announcements, competition history, and records. It also features a notification system for upcoming competition call times, ensuring members stay informed about their events.

Highlights
  • View association announcements
  • Access competition history and records
  • Compare past and upcoming competition data
  • Receive call time notifications for events
  • Member-exclusive access
Features
Read full description

アプリのご利用方法 ■「協会からのお知らせ」閲覧 ログイン後のトップ画面に協会のお知らせが表示されます。 最新のものから5件表示されます。 ■競技会への出場履歴と記録の閲覧 ・過去に出場した競技会の確認ができます。 ・過去の大会記録から出場予定の大会の記録を確認して比較検討に活用できます。 ■招集通知機能 エントリーした大会の招集時間が近づくとアプリに通知が送られます 通知を受け取ったら招集場所へお集まりください ※本アプリはマスターズ水泳協会の会員専用のアプリです。  ご利用にはマスターズ水泳協会の会員登録が必要です。 ■一般社団法人日本マスターズ水泳協会について 日本マスターズ水泳協会は、マスターズ水泳の普及・振興に関する事業を行い、もって国民の心身の健全な発達に寄与することを目的とする、一般社団法人です。 http://www.masters-swim.or.jp/

Screenshots

JumpEye4 screens
JAPURI3 screens

Verdict

The call

The clearest difference is price: JAPURI at Free against JumpEye's $2.99. JAPURI also leads on iOS requirement (14.0 vs 16.6). JumpEye's advantage is review sentiment (56% vs 17%) and update cadence (every 2 months vs every 4 months). On ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

JAPURI is free to download; JumpEye costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

JumpEye ships an update every 2 months, JAPURI every 4 months. The most recent releases landed on October 26, 2026 and October 4, 2026 respectively.

Scorecard5 real differences · 5 level
JumpEye versus JAPURI: the parameters behind the verdict, then further details
ParameterJumpEyeJAPURI
Price$2.99Free — better
Rating4.7 (3 ratings) — better—
Positive reviews55.6% of reviews — better16.7% of reviews
Number of ratings3 — better—
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS16.614.0 — better
Further details — not scored
Size5 MB6 MB
Age rating4+4+
Developer株式会社S-CADEVISH,inc

Customer experience

JumpEye

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive55.6%
Neutral0.0%
Negative44.4%

JAPURI

Written reviews6 reviews
Positive16.7%
Neutral16.7%
Negative66.7%

In-app purchases

None

JumpEye

No in-app purchases

None

JAPURI

No in-app purchases

Questions

Is JumpEye free?
JumpEye costs $2.99, with no in-app purchases.
Is JAPURI free?
JAPURI is free to download, with no in-app purchases.
Do JumpEye or JAPURI have ads?
Neither JumpEye nor JAPURI shows ads.
Which is updated more often, JumpEye or JAPURI?
JumpEye ships an update every 2 months, and JAPURI every 4 months. Most recently, JumpEye was updated on October 26, 2026 and JAPURI on October 4, 2026.

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