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Never. Every edit lives on a layer inside a Nimu project: adjustments, filters, retouching, paint and type. Exporting writes a new picture. The photo in your library stays exactly as you shot it, and the project stays editable.

Photo layers, colour fills, text, paint and retouch layers, which hold pixels or strokes, and Raw layers, which hold none: they apply the Raw panel to whatever is under them. Every layer has opacity, nine blend modes, a mask and its own smart filters.

Inside the app, on your device, and they reopen exactly as you left them. A project never leaves the device unless you export a picture from it.

Not yet. Projects use Nimu's own format, and every project exports to JPEG, or to PNG when you need transparency.

No, Nimu edits any photo. Nimu Cam is its companion camera, also free: it shoots with manual controls and the same 28 looks live in the viewfinder, so pictures you take with it and finish in Nimu stay one series. See Nimu Cam.

Yes, on any iPad with iPadOS 17 or later. On a wide screen the layers and the tools move into a column beside the canvas, the way a desktop editor is laid out.

A layer with no pixels of its own that applies the Raw panel, light, colour, curve, mixer, grading, effects and optics, to everything under it. Turn on Clip to layer below and it changes one layer only. Give it a mask and it works only where you draw.

Select the photo, open Mask, and choose Adjust an area: Nimu adds a Raw layer clipped to the photo, ready for a linear gradient, a radial gradient or the brush. Drag on the photo, and the sliders below work only inside the shape. Add and Subtract combine several shapes in one mask.

It opens the photos iOS can show you, including the processed version of a RAW file. The Raw panel works on that picture with the same sliders a raw developer uses; it does not demosaic the sensor data itself.

A Portrait mode photo carries a depth map, and Nimu uses it. For any other photo, the device finds the subject on its own chip and keeps it sharp. Nothing is sent anywhere to work it out.

Yes, at any time. Smart filters keep their settings: reopen one, move it up or down the stack, hide it, change its opacity and blend mode, or give it its own mask so it works only where you paint.

Every stroke undoes on its own, Reconstruct brushes any part of the warp back to where it started, and Restore All removes it completely. Liquify is a smart filter, so the photo underneath is never changed.

Spot Healing, which finds a clean patch by itself, the Healing Brush, which takes texture from a source and light from where you paint, and the Clone Stamp, which copies exactly. They paint on a retouch layer, so the retouch can be faded or removed later.

Yes. Press harder and the brush, marker and airbrush draw a wider line, while the pencil draws a darker one. You can turn pressure off, and a finger always paints at full strength.

Two things, both about the file you export: pictures export at full resolution instead of 1600 pixels on the long edge, and the small Nimu mark in the corner disappears. Every tool, every layer and every filter is 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 exported file. Your project is still there and still editable, so export it again after buying Pro for a clean copy.

No. Every tool runs on your device'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 export. Opening a photo goes through Apple's own picker, which hands the app only the pictures you choose and never the rest of your library.

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