Comparison

Timetracks4D vs Video speed changer

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

Head to head
About

Timetracks4D

Create unique moving photographs with a slit-scan camera effect. Adjust scan movement, time intervals, resolution, and exposure for custom results. Automatically save your creations periodically.

Highlights
  • Slit-scan camera effect
  • Adjustable scan movement (One-way, Palindrome, Still)
  • Customizable scan time interval
  • Image resolution settings
  • Scan line width adjustment
  • Exposure lock
  • Automatic image saving
Read full description

Timetracks4D is a camera that cuts time out as if it were space. Think of video as a cube stacked in three directions: width, height and time. Ordinary playback cuts that cube straight across time and shows you the slices one after another. Timetracks4D tilts the cut. Once it is tilted, every place on the screen shows a different moment: whatever held still comes out as it was, and only what moved is twisted. ■ Two ways to shoot [Movie] Records while the cut turns. The tilt changes from frame to frame, so the picture keeps moving. Angle, Speed and Window Time change how it twists. [Still] Builds one picture by stacking narrow bands, one at a time. Each band was taken at a different moment, so the finished picture reads as the flow of time from top to bottom. This is the slit scan, the way the first Timetracks worked. It saves a long picture: eight screenfuls joined end to end, each at the camera's own resolution. Both are made from the same camera feed, but they treat time differently, so each one has its own settings. ■ Main settings - Camera (Back / Front), Zoom (Lens), Resolution, Frame Rate - Transform (Shear / Rotate) and the edge time runs along (Long Edge / Short Edge) - Auto Rotate speed, Angle, Window Time - How the band moves (One-way / Palindrome / Wave / Fixed / Drift / Random) - Interval between bands, from single frames to hours - Scan Width - Full Screen, Show Buttons, Touch Gestures, Prevent Auto-Lock - Add Location There is a button that randomizes the settings. If you are not sure what to touch first, press that. ■ Getting a good result Hold the device still. If the device moves, the whole picture moves with it and you cannot tell that apart from the subject moving. A tripod or a table is the sure way. Point it at something that moves. A still subject seen from a still device gives the same picture at every moment, so nothing happens. People walking, a hand, water, traffic, anything swaying in the wind - these work well. Once you have the feel of it, try moving the device instead. That is where the more complicated shapes come from. ■ Pricing Everything except recording is free. Play with the camera and the settings as much as you like; the picture you would get is on the screen already. Try it first. Full Access (a one-time in-app purchase) removes the ad and lets you save movies and stills. If you have already bought Timetracks, you do not need to buy anything. Full Access turns on by itself when you update.

About

Video speed changer

Features
Read full description

Speed up or slow down your video clips in just few taps! You can easily change the speed of your video clips with Video speed changer. Video Speed Changer has very simple feature with simple UI, but it was completely designed from scratch with latest iOS features. It works well with other apps you use such as Dropbox or Message app. You can import video clip from your photo library or iCloud drive, change the speed of the clip, then save it to your photo library or iCloud drive again, or upload it to SNS. * Speed: x0.25 - x100 * Duration: 1 sec. - 3 min. * Simple / intuitive UI. * Quick preview. * Import file from Photo library or Files including iCloud Drive. * Save modified video to photo library. * Send modified video to other apps. * Send modified video to other devices.

Screenshots

Timetracks4D4 screens
Video speed changer3 screens

Verdict

The call

The clearest difference is price: Timetracks4D at Free against Video speed changer's $0.99. Video speed changer's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence, 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

Timetracks4D is free to download; Video speed changer costs $0.99 up front. Timetracks4D sells 1 one-off in-app purchase. Video speed changer asks for nothing beyond the download.

UpkeepUpdate frequency

Timetracks4D ships an update every 3 weeks, Video speed changer every 2 weeks. The most recent releases landed on October 14, 2026 and October 18, 2026 respectively.

Scorecard3 real differences · 7 level
Timetracks4D versus Video speed changer: the parameters behind the verdict, then further details
ParameterTimetracks4DVideo speed changer
PriceFree — better$0.99
Rating1.0 (1 ratings) — better—
Positive reviews23.2% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size5 MB2 MB
Age rating4+4+
DeveloperMasayuki AkamatsuSota Yokoe

In-app purchases

1 purchases

Timetracks4D

One-time1
  • Full Access$3.99
None

Video speed changer

No in-app purchases

Questions

Is Timetracks4D free?
Timetracks4D is free to download, with in-app purchases available.
Is Video speed changer free?
Video speed changer costs $0.99, with no in-app purchases.
Do Timetracks4D or Video speed changer have ads?
Timetracks4D shows ads; Video speed changer does not.
Which is updated more often, Timetracks4D or Video speed changer?
Timetracks4D ships an update every 3 weeks, and Video speed changer every 2 weeks. Most recently, Timetracks4D was updated on October 14, 2026 and Video speed changer on October 18, 2026.

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