Use APKPure App
Get OrthoCam old version APK for Android
Simple camera app that simulates orthochromatic film look + light meter
If you are shooting with LF camera and use ortho film then this tool may help you to visualize how the scene will look using orthochromatic film.
You can enable/disable RGB color components to see how values will change with green or blue sensitive films.
You can also use this app as simple light meter.