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No, and neither can any other app: an iPhone lens has a fixed aperture, built into the hardware. Nimu Cam's aperture dial is marked SIMULATED. It recreates the exposure change an aperture would cause, so choosing f/8 darkens the picture the way f/8 would, and the exposure triangle behaves like a real camera's. What it cannot do is create the background blur of a fast lens, because that is physics rather than software.

ISO, shutter speed and focus are genuine hardware controls, set on the sensor and the lens motor. In manual mode you can also read the light meter to see how far your exposure sits from the camera's own reading.

That is the longest exposure the camera hardware allows in this mode. For anything longer you need the kind of long exposure stacking Apple's own Night mode does, which is a different technique.

Not yet. Photos are saved as high quality JPEG and keep their original EXIF, including the ISO and shutter speed you chose. RAW is on the list, and it matters most for people who want to grade later rather than in the app.

Both. The viewfinder shows the filter live, and the photo is saved with the same look applied, at full quality. What you framed is what you get.

Yes, on any iPad running iPadOS 17 or later, and it has its own landscape layout: the viewfinder fills the screen and the controls move into a column beside it.

They were written from scratch as maths. Each one is a colour grade, a function that maps every colour to another colour, plus the physical side of film: grain, vignetting, bloom, halation, light leaks, dust and scratches, all sized to the picture. Nothing was bought in or copied from a preset pack.

Editorial filters are magazine and campaign grades: highlights rolled off instead of clipped, the colours around the subject muted while skin keeps its warmth, and almost no grain. Vintage filters recreate film stocks, instant prints and old processes, with all the damage that comes with them.

Yes. That is what the Darkroom is for. Open any picture from your library, try filters with live previews, set the strength, hold to compare with the original, and save. Saving always creates a new photo, so the original is never touched.

In the Darkroom, yes, with the intensity slider. On the camera, filters apply at full strength so that what you see in the viewfinder is exactly what gets saved.

Two things, both about the file you save: photos are saved at full resolution instead of 1600 pixels on the long edge, and the small Nimu mark in the corner disappears. The camera, manual mode, the Darkroom and all 29 filters are free, with no trial and no countdown.

No. It is one payment, kept for good, on your Apple Account. There are no ads and no other purchases.

Open the PRO badge and tap Restore a previous purchase, signed in with the same Apple Account you bought it with. If it still does not appear, write to us with the date of purchase and we will help.

They keep it, because the mark is part of the saved file. Open the original in the Darkroom again after buying Pro and save a clean copy.

No. Every filter runs on your phone's own chip. The app has no servers, no accounts and no analytics, and it works in airplane mode, which is the simplest way to prove nothing is being sent.

To add the pictures you save, and to let you open your own photos in the Darkroom. It asks for permission to add photos, not to read your whole library.

No. If you drop a photo into that demo, it is read by your browser and filtered on your own machine. It is never sent to a server, and nothing is stored.