What it does
Callipeg is a frame-by-frame animation app for tablets, iPhone and desktop computers. Drawings are held on sheets in a timeline, and projects can move between its platform editions as PEG files. Each edition uses a one-time purchase; licences are generally tied to the store where they were bought.
Draw a sheet, then choose its hold
In the tablet timeline, draw or double-tap at a position to create a sheet. Timeline Sheet Length sets how many frames a new drawing lasts. The timeline can show frame numbers or time, and its drawing thumbnails are available for shots up to 1920 by 1080.
For a layered image handoff, choose Sequence and PNG or TGA, then enable Export with Structure. This produces a folder for each layer. Export one image per sheet avoids repeating every held frame; background export can be disabled for transparency. Stay in the app until export finishes.
Move the shot, not the licence
PEG files stay editable in Callipeg on supported devices. Other exchange choices include JSON, OCA and XDTS for animation-production tools. Licences from different stores do not transfer, although the Steam Studio purchase covers Windows and Linux. Work is stored locally, and drawing does not require a permanent internet connection.
Strengths
- Sheet duration separates drawing changes from frame timing
- Structured PNG sequences preserve layer organization
- Editable shots transfer between supported devices
Watch out for
- PEG projects can only be opened in Callipeg
- Most store purchases do not transfer to another platform
- Tablet timeline thumbnails are limited to shots up to 1920 by 1080
Best for
- Animators drawing shots for later compositing
- Artists moving frame-based work between tablet and desktop
Sources
- Callipeg formats, devices and licensing FAQ (Oct 27, 2026)
- Callipeg drawing-sheet timeline (Oct 27, 2026)
- Callipeg image and sequence export (Oct 27, 2026)