Lenticular｜懐かしい“角度で変わる絵”をスマホで

Tilt your iPhone and the card's image changes. This app recreates the effect of lenticular printing, where the image changes depending on the viewing angle, on your screen.

Using the device's tilt as a substitute for the "viewing angle," the screen is divided into thin vertical strips (equivalent to one lens), and slightly different images from different angles are selected and combined for each strip. During the transition, the preceding and succeeding images blend together like stripes, and the boundary between them crosses the card, creating a realistic movement.

■Three Types and Sample Images
・Changing: Two images swap places.
・Animation: 12 frames of images appear to move.
・3D (Parallax): Nine images create a sense of depth.
Four images are included for each type. Swiping the card up and down switches the image.

* Changing: Good morning ⇄ Good night / Neon sign OPEN ⇄ CLOSED / Cherry blossoms at night ⇄ Snow-covered tree / Sleeping eyes ⇄ Galactic eyes
* Animation: Spinning satellite / Neon warp tunnel / Blooming and closing flowers / Rotating kaleidoscope
* 3D: Pop-out 3D / Thousand torii gates at sunset / Jellyfish in the deep sea / Rocket and planets in space

■ Try it with your own images
You can select up to 24 photos or illustrations. They will be arranged in the order you selected, switching between 2 images, creating an animation if they are numbered sequentially, and appearing 3D if you take photos slightly shifted horizontally.
* Long-press a thumbnail and drag horizontally to rearrange them.
* Adjust the angle of each image.
* Supports displaying the entire image without cropping.
Images are processed only on this device and are not sent anywhere.

■ Operation
* Tilt your iPhone to change the angle. You can move the card by dragging it while you're touching it.
- Swiping the card left or right switches the type (Changing/Animated/3D/Your Image).
- Tapping the card displays it in full screen.
- Resetting the angle meter re-adjusts your current grip to face forward.

■ Fine-tuning
- Drawing method: Lenticular reproduction/Simple switching (normal crossfade). You can see the difference when you compare them.
- Lens width, transition stripes, lens gloss, tilt sensitivity.
- You can always return to the original settings with "Restore to default".

■ Please note
- Since the same image is seen by both eyes, it cannot reproduce binocular stereoscopic vision where the image pops out.
- Banner ads are displayed at the bottom of the screen. We use Google AdMob for delivery. We do not request permission for tracking, and we do not use advertising IDs (IDFA).
- You can remove ads with an in-app purchase (one-time purchase) premium. It is not a subscription. After changing devices or reinstalling, you can restore your purchase with "Restore Purchase". Account registration is not required.
- We do not request permission to access your photos. Images are imported only from the system's photo selection screen.

• Compatible with iPhones and iPads running iOS 17.0 or later.