Grain Studio: Film Looks & HDR
Grain that survives posting
Free · In‑App Purchases
Film grain that survives posting. HDR that stays HDR. Seven film looks for photos and video.
Grain Studio adds film grain measured from real 120 negatives, the red-orange halation film makes around bright lights, and film borders to the photos and clips you have already shot and edited, and keeps them HDR. The grain is redrawn at the size you post, so it survives Instagram instead of turning to mush.
Your first 6 photos and 1 clip are free, at full quality. Then a 7-day free trial, and after it a one-time unlock: no subscription, and nothing is charged when the trial ends. One purchase covers iPhone, iPad and Mac.
LOOKS, EDGES AND MORE
• Seven looks you can tell apart at a glance: Natural (your own colour, texture only), Portrait, Pastel, Slide, Golden, Tungsten and Mono. A Colour slider sets how much colour; a loupe shows the grain at 100 %.
• Film edges, if you want them: a 135 strip, a 120 frame or a clean scan border, in our own lettering, plus an orange date stamp from the day you shot.
• Look cards: share a look as a picture with a QR code, and anyone with Grain Studio can add it from the card.
• Shortcuts and Siri actions, sharing from the Photos app, and on iPhone a Live Activity that follows your full-size files.
VIDEO
Develop clips as well as photos. The grain moves like film, new in every frame. HDR in, HDR out (HLG), sound kept. Choose 9:16, 4:5, 1:1 or the clip's own ratio; the result is saved to Photos.
CAROUSELS THAT AREN'T CROPPED OR SHRUNK
Instagram crops a carousel to its first slide's shape and shrinks photos bigger than it shows. In Compose every slide has the same shape and pixel size, made from the original at the size the feed shows: one photo per slide, pairs (two 3:2 frames stack into a 3:4 slide), grids, a wide photo split seamlessly across two or three slides, or a before & after of the same frame. One look across the set. HDR photos give HDR slides: every slide, each part of a split included, is a gain-map HEIC on one shared tone map, so the light matches across the seam.
MEASURED, NOT IMAGINED
• Grain measured from real 120 negatives. The 35 mm texture is the same emulsion at 35 mm's magnification; edge softness was measured from 120 and 35 mm scans.
• It sits in the picture the way film grain does: coarser in the shadows, finer in the highlights, gone in pure white.
• Rendered for the size of each file, never resampled: a fine tooth on a 1080 px post, printable grain on the full-size master.
• Halation (Glow in the app): natural, red, amber, magenta or violet, at the strength you choose.
HDR IN, HDR OUT
Start from an iPhone photo, a Lightroom HDR export (AVIF, JPEG XL, HDR PNG, TIFF), a scan or a camera RAW. Everything is computed in linear light at full resolution on your device's GPU. You get a gain-map HEIC: HDR in Apple Photos and wherever HDR is shown, the same picture in SDR everywhere else. Posted as a single feed photo, Instagram can show it in HDR too.
READY TO POST
• Posts in seconds: on iPhone and iPad the Instagram and RedNote versions are ready first, while the full-size file finishes.
• Instagram 4:5 at 1080 px wide, or 3:4 and 1:1. RedNote 3:4. The grain is rendered at that size, not scaled down.
• A full-resolution master: HDR HEIC, PQ HEIC or 16-bit TIFF, in a Grain Studio folder in Photos with an album for each kind. Nothing is ever overwritten.
IPHONE, IPAD AND MAC
The same app runs on all three, and your looks can be shared between them as look files. On the Mac, drop in a whole shoot and batch it.
PRIVATE
No account, no upload, no analytics. Your photos and clips never leave your device.
Not a camera: Grain Studio finishes the pictures you already have. Not affiliated with any film manufacturer.
Requires iOS 18 and an iPhone or iPad with an A-series or M-series chip. Camera RAW uses Apple's RAW pipeline (900+ cameras).
• Fixes a crash when a photo opened on iPhones with 4 GB of memory, such as iPhone 11, iPhone 12, iPhone 13 and iPhone SE.
• On those iPhones, very large camera photos now open at a reduced size: their posts are made as usual, and full-size files from them need an iPhone with more memory.
The developer, Santiago Munoz, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Santiago Munoz
- Size
- 35.7 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
English and 16 more
- English, Dutch, French, German, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Grain Studio Lifetime Unlock $29.99
- 7-Day Trial $0.00
- Copyright
- © 2026 Santiago Munoz
