Pontus Focus & ColorChecker

Three tools I kept wishing existed in a single app, so I fixed it.

FOCUS CHART
A full-screen Siemens star for verifying lens sharpness on set. Place the phone at your subject distance, open up to your working aperture, and shoot. The radial spokes should stay crisp at the centre. Any smearing or moiré tells you the camera is front- or back-focusing.
Fast and practical. No dedicated test chart to carry, no setup.

COLORCHECKER CLASSIC

An on-screen recreation of the Calibrite ColorChecker Classic. 24 reference patches available in sRGB, Display P3, Adobe RGB, and Rec. 709.
Most useful on multi-camera setups. Place the phone in front of each camera under identical exposure settings, shoot the chart, then pull the clips into your colour tool and align the patches. It gives you a consistent colour baseline across every angle before the grade even starts.
This isn't a replacement for a physical chart. Real light on real pigment will always be more accurate. But when you're moving between setups quickly and need all your cameras speaking the same language, it gets the job done.

DIGITAL SLATE

Set your own time or use on-device time. Perfect for syncing multiple cameras. No timecode support unfortunately but on the other hand there is no timecode to worry about.