Comparison

JumpEye vs SoundPaceTimer

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

SoundPaceTimer

Features
Read full description

Stay on track with audio time signals. Useful for swimming and athletics. Simply adjust the... 1. Interval time 2. Interval between the person 3. Number of people Let's focus on your practice with SoundPaceTimer!!!!

Screenshots

JumpEye4 screens
SoundPaceTimer2 screens

Verdict

The call

The clearest difference is price: SoundPaceTimer at Free against JumpEye's $2.99. SoundPaceTimer also leads on update cadence (weekly vs every 2 months). JumpEye's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement 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

SoundPaceTimer 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, SoundPaceTimer weekly. The most recent releases landed on September 22, 2026 and December 22, 2025 respectively.

Scorecard3 real differences · 7 level
JumpEye versus SoundPaceTimer: the parameters behind the verdict, then further details
ParameterJumpEyeSoundPaceTimer
Price$2.99Free — better
Rating4.7 (3 ratings) — better—
Positive reviews55.6% of reviews—
Number of ratings3 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS16.6 — better17.0
Further details — not scored
Size5 MB6 MB
Age rating4+4+
DeveloperS-CADE, CORPORATIONYu Hiraoka

In-app purchases

None

JumpEye

No in-app purchases

None

SoundPaceTimer

No in-app purchases

Questions

Is JumpEye free?
JumpEye costs $2.99, with no in-app purchases.
Is SoundPaceTimer free?
SoundPaceTimer is free to download, with no in-app purchases.
Do JumpEye or SoundPaceTimer have ads?
SoundPaceTimer shows ads; JumpEye does not.
Which is updated more often, JumpEye or SoundPaceTimer?
JumpEye ships an update every 2 months, and SoundPaceTimer weekly. Most recently, JumpEye was updated on September 22, 2026 and SoundPaceTimer on December 22, 2025.

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