The Monoqulo app icon

One photo,
23 ways to go monochrome.

Pick a photo, pick a texture. Pushed film grain, darkroom toning, newsprint halftone, pencil sketch. Monoqulo does one thing: it turns a single photo monochrome and exports it.

Film7 Tone5 Graphic7 Sketch4

The same photo as silver halide,
as risograph, as 1-bit.

Plenty of apps turn photos black and white, but most of them stop at film-like tone conversion. Monoqulo crosses four families — film, toning, graphic and sketch — through one set of controls.

Four families, 23 styles

Switch families with a tab and pick from the thumbnails. Each thumbnail is your own photo actually put through that style, so you see the result before you commit to it.

Film7 styles

Colour filters change how the sky falls; push the film and blacks lift while grain coarsens.

  • Neutral
  • Yellow Filter
  • Red Filter
  • Classic 400
  • Fine 100
  • Push 3200
  • Infrared

Tone5 styles

The darkroom step of toning a print. One colour can sit in the shadows and another in the highlights.

  • Sepia
  • Selenium
  • Platinum
  • Cyanotype
  • Split Tone

Graphic7 styles

Newsprint dots, the error diffusion of the first Macintosh, the ordered dither of early games.

  • Halftone
  • Line Screen
  • Threshold
  • Atkinson
  • Bayer
  • Posterize
  • Riso

Sketch4 styles

Two mechanisms: pulling out contours, and dodging the image to white.

  • Line Art
  • Charcoal
  • Pencil
  • Blueprint

Only the sliders that matter

Intensity, Exposure, Contrast and Grain are always visible; Highlights, Shadows and Vignette live under Details.

  • Each style adds exactly one slider that only makes sense for it — dot size, toning strength, line weight
  • Double tap a label to return it to its default
  • Press and hold the preview to compare with the original

Exported at full resolution

Nothing is downscaled, there is no ceiling, and there is no watermark.

  • HEIC normally. Halftone and dithered styles export as PNG, because JPEG compression muddies fine dot patterns
  • Date, camera and lens are kept. Location can be dropped in Settings
  • What you export lands at the top of Recents in Photos

The preview is the export

Dots and grain come out the size you saw them on screen.

  • Tie a pattern's size to the source pixels and the preview stops matching the file you get
  • Monoqulo is built to be resolution independent, so a 4000px photo and a 1000px photo land on the same texture

One photo at a time

No history, no library, no batch processing. Pick one, make it, export it.

  • Open the app and there is a single large "Choose Photo" button
  • iPhone and iPad. When there is width to spare, the photo and the sliders sit side by side

There is nothing
to collect.

The app has no networking code at all. No account, no analytics, no ads.

No network

The app performs no network communication whatsoever. There is no analytics SDK and no ad SDK. Everything works in airplane mode.

Your library stays closed

Picking a photo is left to the system picker, so the app never asks to read your library. Only the one photo you chose is handed to it.

One permission, that's all

Adding the photo you exported to your own library. Nothing else is ever requested.

No account, no server

There is no sign-up and no sign-in. No server is operated by the developer.

It all happens on device

Processing happens entirely on your device and is discarded when you close the app. There is no mechanism for storing your photos.

Location can be dropped

Location is carried over by default, but switching it off in Settings strips the GPS data before the file is written.

See the privacy policy for the full text.

Requirements

OS
iOS 26.0 / iPadOS 26.0 or later
Devices
iPhone and iPad
Styles
23, across four families
Export
Full resolution. HEIC normally, PNG for halftone and dithered styles
Network
Not needed. The app does not communicate
Languages
English and Japanese
Price
One-time purchase. No in-app purchases