Every feature, down to the slider.

Five tabs

Light, Color, Effects, Looks and Tools sit in one row, in the same place on iPhone, iPad and Mac.

Groups

Light holds Basic and Tone Curve. Color holds Basic, Color Mixer, Grading and Calibration. Effects holds Texture, Atmosphere, Grain, Sharpen, Noise and Lens.

Seven tools

Masks, Crop, Blur, Smart Edit, Frames, Retouch and Censor, each one tap away under Tools.

Precision sliders

Every slider shows its real value. Most run from −100 to +100 in whole steps, with a haptic tick at every step, at the default and at both ends.

Fine control

Move your finger up or down while you drag, and the slider slows down in three stages, for the smallest changes.

Exact values

Press and hold a slider’s value to type an exact number. The field shows the slider’s range.

Quick reset

Double-tap a slider to reset it. A reset arrow appears beside the name of every slider you have moved.

Zoom

Pinch and pan at the same time, up to 16 times. The part you zoom into is drawn in full detail.

Immersive mode

On iPhone and iPad, tap the photo to clear the bars away and let it fill the screen. Settings can make every photo open this way.

Title pages

Tap the title in the editor to step through file, camera, exposure, size and a live histogram. Pick and order the pages in Settings › Editing.

Grouped adjustments

On iPhone, each tab splits into smaller groups you scroll between. Turn it off for one long list.

Non-destructive

Your original file is never changed. Edits are saved separately, so you can change, copy or reset them at any time.

More about how masoc is designed

Exposure

−5 to +5 EV in steps of 0.05. It lifts the midtones most and eases off toward white.

Contrast

−100 to +100.

Highlights and Shadows

−100 to +100 each. They work on areas, not single tones, so a bright sky comes down and dark corners open up.

Whites and Blacks

−100 to +100 each, for the two ends of the tonal range.

Tone curve

Free points on RGB, red, green and blue. Tap to add a point, drag to move it, double-tap to remove it. The end points move up and down.

A curve that holds

The curve is a smooth spline that never folds back on itself. While you drag, the point reads as input → output from 0 to 255.

Curve reset

Each channel resets on its own, so a red curve can go while the RGB curve stays.

More about RAW editing

Kelvin on RAW

Temperature from 2,000 to 100,000 K on a perceptually even scale, starting from the camera’s As Shot value. Tint from −150 to +150.

White balance presets

As Shot, Auto, Daylight, Cloudy, Shade, Tungsten, Fluorescent, Flash and Custom on RAW. As Shot, Auto and Custom on JPEG and HEIC.

Auto

Evens out the colors of the whole photo in one tap.

Neutral picker

Drag a crosshair over something that should be gray, watch the photo change live, then apply or cancel.

JPEG and HEIC

Temperature and tint shift relatively, from −100 to +100.

Vibrance and Saturation

−100 to +100 each.

Color Mixer

Hue, saturation and luminance for eight bands: red, orange, yellow, green, aqua, blue, purple and magenta. A dot marks every band you changed.

Hue Shift

Turns every color around the color wheel, from −180° to +180°.

Color Grading

Tint the shadows, midtones, highlights or the whole photo, each with a hue from 0 to 360° and a saturation from 0 to 100.

Calibration

Shadow tint, plus hue and saturation of the red, green and blue primaries.

More about white balance on RAW

Texture, Clarity, Structure

−100 to +100 each, from the finest surface detail to broader local contrast.

Dehaze

−100 to +100. Cuts through haze, or adds some.

Glow

0 to 100. A soft bloom around the bright parts of the photo.

Vignette

−100 to +100. Darkens or lightens the corners of the cropped photo.

Grain

Amount from 0 to 100, with Size and Roughness to shape it.

Sharpen

Sharpness from 0 to 100, Radius from 0.5 to 3, Detail and Masking from 0 to 100.

Noise reduction

Luminance with Detail and Contrast, Color with Color Detail and Smoothness, each from 0 to 100.

Lens corrections

Vignetting and Chromatic Aberration from −100 to +100, Defringe for purple and green fringes from 0 to 100. Set by hand, so they work with any lens.

Subject and Background

Found on your device with Apple’s Vision framework. Background is the subject turned inside out.

Sky

Two models built into masoc reach in between leaves and branches. A photo without a sky says so instead of guessing.

Linear and Radial

Gradients you drag onto the photo, each with a feather from 0 to 100.

Brush

Size, Feather and Flow. It erases as easily as it paints.

Several masks

Give one photo as many masks as it needs, each with its own sliders.

Add and subtract

A mask is a chain: add or subtract regions, AI or drawn. Press and hold a mask to add a region.

Every part

Invert or hide each part, or switch it between add and subtract. Tap a part to see it on its own for a moment.

Opacity and overlay

Each mask has an opacity from 0 to 100 percent and inverts in one tap. A red overlay shows where it acts.

Inside a mask

Exposure, contrast, highlights, shadows, whites, blacks, temperature, tint, vibrance, saturation, texture, clarity, structure, dehaze, glow, vignette, grain, sharpening and noise reduction.

Masks that stay put

Masks are anchored to the original photo, so they stay on the subject when you crop, straighten or rotate.

Reuse

Paste masks onto other photos, and subject, sky and background are found again on each one. Linear and radial masks travel in Lightroom presets.

More about AI masks

Remove

Paint over an object, and a model on your device fills the area. A tap removes a small spot.

Heal

Paint over a blemish: texture comes from nearby, color and light from around it.

Clone

Copies a nearby area exactly. Drag the dashed outline to copy from somewhere else.

Brush

Size, Feather and Opacity. Zoom in for a finer brush.

Variations

Not right yet? Step through other fills, or the next best source area.

Every spot

Each spot keeps its own feather, opacity and variation, and can be deleted on its own.

Anchored

Spots live on the original photo, so a later crop or rotation never moves them.

Depth from one photo

A depth model on your device reads depth from the pixels alone. Depth from Portrait mode is used when a photo has it.

Tap to focus

The focus starts on the subject. Tap anywhere to make that depth sharp, or tap Focus on Subject to go back.

Blur

0 to 100. It scales with the photo, so it looks the same at any size.

Focus Range

0 to 100, from a thin slice of sharpness to the whole scene.

Built in layers

The photo is split by depth, and each band gets a round blur. Small lights open into discs, and the subject stays sharp from head to toe.

Full quality

The export renders at full resolution, and the area in focus keeps its original pixels.

More about background blur

Shapes

Draw a rectangle or an ellipse, or paint with a brush. A tap drops one.

Covers

Pixelate or Blur with a strength from 0 to 100, or a solid Fill.

Fill color

White, black, any color you pick, or one taken from the photo with a magnifying loupe.

Every area

Each area keeps its own cover. Drag it to move, pull the corners to stretch, turn it with the knob.

Built to hide

masoc warns when a mild cover over text could be undone, and the export sheet tells you that Original skips every edit.

Anchored

Areas live on the original photo, so a crop or rotation keeps them over what they hide.

Aspect ratios

Free, Original, 1:1, 4:3, 3:2 and 16:9, each turnable to portrait.

Straighten

−45° to +45°.

Rotate and flip

Quarter turns left and right, flip horizontally and vertically.

Perspective

Vertical, Horizontal and Aspect from −100 to +100, Scale from 50 to 200 percent, X and Y Offset.

Distortion

−100 to +100, for barrel and pincushion distortion.

Auto Upright

One tap finds the lines in the photo and straightens tilted horizons and converging verticals.

Edges

Fill the frame, or keep the edges and see the whole corrected photo.

Border

An even edge in any format: Original, 1:1, 4:5, 3:4, 2:3 or 9:16, each turnable to landscape.

Polaroid

Instant film with a deep lower edge. The photo sits in a square window.

Whole or filled

Show the whole photo on the paper, or fill the window and cut the photo to it.

Thickness and corners

Thickness and Corner Radius from 0 to 100.

Paper color

White, Cream, Black, up to three soft tones taken from the photo, or any color you like.

Position

Drag the photo inside the frame, double-tap to center it.

Fujifilm

Provia, Astia, Classic Chrome, Classic Neg, Reala Ace, Eterna, Pro Neg Std and Acros.

Film

Portra 400, Kodak Gold, Cinestill 800T and Polaroid.

Mono

Ilford Delta and Ilford Delta Faded.

Vintage

Autochrome, Classic Cuban, Coffee and Summer Glow.

Creative

Cyberpunk, Infrared, Bark Morken and London.

Intensity

Every look from 0 to 120 percent, 100 by default.

Favorites

Mark the looks you use most, and they sit at the top.

Hover preview

On Mac and iPad, a look shows on your photo while the pointer rests on it. Click, and it stays.

Your profiles

Import .cube LUTs, one or several at once. They sit beside the built-in looks, on photos and video.

Your presets

Save an edit as a preset from the export sheet, with or without its masks, or overwrite an existing one.

Lightroom presets in

Open .xmp presets from Lightroom or Camera Raw. Each becomes a masoc preset.

Lightroom presets out

Export a preset as .xmp, with light, color, tone curve, HSL, color grading, detail, crop, LUT, and linear and radial masks.

.masoc files

Share a preset as a .masoc file, and open it on any device.

Looks manager

Rename, duplicate, delete and export presets and imported LUTs in one place, opened from the library.

Look on import

Pick a look in the import menu, and every photo of that import arrives with it.

More about film looks

Type or speak

Write in your own words, or tap the microphone. Speech is transcribed on your device, in the language it is set to.

Only what you asked for

masoc checks each suggestion against your words. Grain, glow, blur, a crop or a look only go on when you name them.

Change chips

Every change shows up as a chip. Tap it to open its slider, hold it to take back just that change.

Undo

Each request is one undo step, “undo that” works too, and Undo all Smart Edits returns to the start.

Looks by name

Name a built-in look, a preset or an imported LUT, with a strength in percent if you like, or describe a mood.

Exact numbers

“set contrast to 25” or “exposure -0.5” goes straight onto the slider.

Masks and blur

Ask for a darker sky, and Smart Edit can add a Sky mask with the change inside. “Blur the background” sets the blur.

Requirement

Runs with Apple Intelligence on your device, and appears once Apple Intelligence is on.

More about Smart Edit

Start a merge

Select two or more photos and tap Merge. masoc suggests Panorama or HDR from the exposures.

Projection

Spherical, cylindrical or perspective, with the field of view in degrees.

Crop and Fill Edges

The panorama starts at the largest rectangle without empty edges, or Fill Edges fills the corners with invented content.

HDR

Align lines up handheld frames. Deghost from Off to High holds moving things to the reference photo, and Ghosts shows where movement was found.

Live preview

See the result before you merge. Leave a photo out, or choose another as the reference.

Warnings

The studio tells you about mixed cameras or lenses, small exposure steps and photos taken more than 30 seconds apart.

Developed like RAW

The result is a new 16-bit floating-point OpenEXR photo that keeps the light above white. Your originals stay untouched.

In the background

The merge runs with the time left and a Cancel button, while the library stays free to use.

Size

Panoramas up to 80 megapixels on iPhone and iPad, 40 with 4 GB of memory, and 250 on Mac. HDR keeps the full size.

More about panorama and HDR

Light and color

Exposure to blacks, the tone curve, white balance, vibrance, saturation, the color mixer, color grading and calibration, live while the clip plays.

Twelve Log profiles

Apple Log, Apple Log 2, S-Log3 with S-Gamut3.Cine or S-Gamut3, F-Log, F-Log2, F-Log2 C, V-Log, Canon Log 3, N-Log, D-Log and ARRI LogC4.

Log detection

Apple Log, S-Log3 and D-Log are found on their own. For other cameras, pick the profile once, and masoc remembers the camera.

Looks and LUTs

Built-in looks, your .cube LUTs and your presets work on clips, with the same intensity slider.

Crop

Free, Original, 9:16, 4:5, 1:1, 16:9 or 2.39:1, quarter turns, flips and straightening up to 45° either way.

Playback

Scrub the timeline, loop the clip, and press and hold it to compare with the original.

Copy the grade

Copy a grade from one clip and paste it onto the next.

Export

HEVC 10-bit or H.264 8-bit in Rec. 709, at the original size, 4K, 1080p or 720p, at the clip’s frame rate or 60, 50, 30, 25 or 24 fps.

Sound and metadata

Sound is copied across untouched. Location, camera and date go along if you want them to.

More about Log video

Grouped by day

Photos fall into days, and the date travels along in the bar as you scroll. Turn grouping off in Settings.

Grid or list

Switch between a grid of thumbnails and a list.

Columns

Pinch the grid to change the size: up to 5 per row on iPhone, 3 to 12 on iPad and Mac.

Sorting

Date Added, Date Taken, Name, Starred or File Size, each in both directions. Tap the active sort again to flip it.

Filters

All, Edited, Unedited, Starred, RAW, JPEG, Photos, Videos and Merged.

Stars

Star photos from their menu, as a selection, or with the S key on Mac and iPad. Undo works on stars too.

Badges

RAW, LOG, HDR and PANO marks, plus icons for starred, edited and only in iCloud.

Select and act

Press and hold to select, then star, export, merge, paste settings, download from iCloud or delete them together.

Quick preview

Look at a photo large without opening the editor, from its menu or with the Space bar.

Photo info

Dimensions, megapixels, file size and type, camera, lens, focal length, aperture, shutter and ISO. Clips show duration, frame rate, codec, color and audio.

Map

Photos with a location show a small map with coordinates, altitude and the direction the camera faced.

Edit the location

Search for a place, drag the map or type coordinates. Remove a location or restore the original. Exports carry the new one.

Edit the date

Set date and time, or shift them by 15 minutes or an hour for a camera clock in the wrong time zone. The file’s own date is one tap away.

Copy metadata

Copy a single value, the file name, the date or all metadata at once.

Photos library

Pick photos and videos with the system photo picker.

Files

Open files on the device or in iCloud Drive.

Clipboard

Paste a copied image straight into the library.

Share sheet

Send photos, videos, presets and LUTs to masoc from any app.

Drag and drop

Drop files onto the library window.

RAW formats

DNG and Apple ProRAW, Canon CR2 and CR3, Nikon NEF, Sony ARW, Fujifilm RAF, Panasonic RW2, Olympus ORF, Pentax PEF and Samsung SRW, as far as Apple’s RAW engine supports the camera.

Other files

JPEG, HEIC, PNG, videos, .xmp and .masoc presets and .cube LUTs. Presets and LUTs land under Looks.

No duplicates

A photo that is already in the library is skipped.

Your originals

masoc keeps its own copy of every import, so editing never touches the source.

Formats

HEIC, JPEG or PNG, or Original, the untouched source file.

Quality

10 to 100 percent for HEIC and JPEG.

Size

Full size, or by long edge from 320 to 8,000 pixels, by megapixels from 0.5 to 60, or by percent. Never larger than the photo.

Color space

Display P3, sRGB or Adobe RGB.

Metadata

Location, camera and exposure, and date and time, each on or off.

Destination

Photos, Files or the share sheet.

File names

Keep the original name or choose your own, numbered in a batch.

Batches

Select many photos in the library and export them together.

In the background

A progress pill shows how far along it is and the time left, with Cancel. On iPhone a Live Activity follows along.

Copy and paste edits

Paste all of an edit or only the parts you choose, from white balance to frame. Crop, masks, retouch, blur and frame start switched off.

Compare

Press and hold the photo to see the original. On Mac and iPad, hold the Space bar.

Undo and redo

Everything, masks and tools included, for the whole session, even after closing and reopening a photo. A slider drag is one step.

Reset all

Remove every adjustment of a photo in one step, after a question.

Free exports

Your first three exports are free. Exporting an untouched original never counts toward them.

Off by default

Nothing syncs until you turn it on in Settings › iCloud.

Your private iCloud

Everything moves through the private database of your own iCloud account. masoc has no server of its own.

Categories

Presets & Profiles, Photos and Videos, each on its own switch. Videos start off, since they take a lot of storage.

Built-in looks stay

The built-in profiles are part of the app and are never uploaded.

Originals

Keep All on this device, or Download When Needed: previews stay, and an original comes down when you open, export or merge it.

Cellular data

Background transfers wait for Wi-Fi unless you allow cellular data.

Pause

Pause syncing on one device and resume later, without losing anything.

Free up space

Remove downloaded originals that are safe in iCloud, or delete a category from iCloud altogether.

Native on Mac

Built with SwiftUI for macOS, not ported. It needs macOS 26 on a Mac with Apple silicon.

Side panel

Where there is room, the tools stand beside the photo, on the right or the left. iPhone in landscape gets it too.

Menu bar

File, Edit, View and Photo menus with import, export, undo, reset, merge and photo info.

Editor keys

C, M, B and R open Crop, Masks, Blur and Retouch. 1 to 4 pick a tab, the arrows switch photos.

Sliders by keyboard

Hold Option: up and down pick a slider, left and right move it, ten steps with Shift. Option-Delete resets it, Option-Tab changes the tab.

Library keys

Arrow keys move through the grid, Return opens, Space previews, S stars.

Pointer

Hover over a look to preview it, right-click a photo for its menu. On Mac, scroll with Option or Command to zoom.

Settings window

On Mac, Settings opens in its own window with Command-comma.

More about keyboard shortcuts

Help & Tips

Short topics on every part of the app in Settings, and a few tips that show up the first time you need them.

Feedback

Report a Problem, Suggest a Feature and Share Feedback open a mail to the developer, with app and device details filled in.

Problem log

Failed exports, imports, merges, sync and AI steps, crashes and freezes are noted on your device. Read, delete or send them yourself. They hold no photos, file names or places.

No account

No sign-up and no login.

On your device

Masks, depth, retouching and Smart Edit run on your iPhone, iPad or Mac. Nothing is uploaded, and it works offline.

Appearance

Follow the system, or keep masoc light or dark. The editing backdrop can be dark or light on its own. On iPhone and iPad, choose from six app icons.

Storage

See how much space the library takes, and clear the preview cache without touching photos or edits.

Delete safety

masoc asks before photos and videos are deleted, unless you turn that off.

More about privacy in masoc