# Simu — Film Simulation Recipes — Screenshots to Fujifilm C1–C7

> Extracts Fujifilm camera recipes from images and transfers them to camera custom slots. (iPhone/iPad app by Bai-Kuan Yeh.)

- Source: https://appshunter.io/ios/app/simu-film-simulation-recipes/id6811793155 (this page in markdown: same URL + `.md`)
- Developer: [Bai-Kuan Yeh](https://appshunter.io/developer/6811793157)
- Category: Photo & Video
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 6 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2026-09-22
- Data updated: 2026-11-06
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/simu-film-simulation-recipes/id6811793155/reviews.md

## What is Simu?

Less typing. More shooting.

Save a screenshot of a Fujifilm recipe you like on Instagram, Threads or the web, and Simu reads every setting in it.

Plug in over USB-C and write it straight into the camera, without entering film simulation, white balance, tone and the rest one by one.


COLLECT RECIPES

• Import screenshots from Instagram, Threads, Xiaohongshu or web pages, up to 20 at once
• Read the settings from a FUJIFILM camera's original JPEG or HEIF
• Add recipes from another camera's C1–C7 backup
• Import a friend's recipe from a code or QR code

All reading happens on the device. No internet, no account, nothing uploaded.


WRITE TO THE CAMERA

• Put up to seven recipes in a kit and write them over USB in one go
• Every slot is backed up before the write and every value is checked after, and any write can be put back
• C1–C4, C1–C6 or C1–C7, depending on the model


DEVELOP AND SHARE

• Try recipes on your own RAW photos, developed by the camera at full size. The X100VI is fully supported; other models are in beta
• Share a recipe or a whole kit as a code or QR code
• Add the recipe, its code and a QR code to a camera original. Friends without Simu can see the recipe in a browser


FREE TO START, ONE PURCHASE

Importing, organizing and sharing recipes are free and need no camera.

Writing over USB and developing RAW files are one purchase, with no subscription, on every device with the same Apple ID.

Connecting a camera needs a USB-C iPhone or iPad and a USB-C cable that carries data. The camera's two connection settings are shown in the app.


THE 20 FUJIFILM CAMERAS SIMU WRITES TO

X100VI, X100V, X-T5, X-T50, X-T4, X-T30 III, X-T30 II, X-E5, X-E4, X-Pro3, X-H2, X-H2S, X-S20, X-S10, X-M5, GFX100RF, GFX100 II, GFX100S II, GFX100S, GFX50S II.


FUJIFILM, X100VI and the film simulation names are trademarks of FUJIFILM Corporation. Simu is an independent app and is not affiliated with, authorized, or endorsed by FUJIFILM Corporation.

## Key features

- Extract Fujifilm recipes from screenshots
- Read settings from original camera JPEGs/HEIFs
- Transfer recipes to camera C1-C7 slots
- Develop RAW files on camera
- Create and share recipe kits
- Search recipes by name and settings

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock Camera Writing | $4.99 | one-time |


## Is Simu safe?

Not enough ratings yet to assess Simu.

## Is Simu legit?

Simu — Film Simulation Recipes has limited verification signals. The AppsHunter Legitimacy Score for Simu is 58 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/simu-film-simulation-recipes/id6811793155/reviews.md

### 5/5 — 잘쓰고있습니다(요청사항)

*2026-10-21*

후지 앱 중에 제꺼 기록하기 제일 좋아요 그런데 메인화면에서 새로운 레시피 등록할때 이미지 불러오기 말고 그냥 따로 레시피 선택해서 값 조절하고 저장하는 기능도 있으면 좋겠습니다!!

## Frequently asked questions about Simu

### How does Simu extract Fujifilm recipes?

Simu reads Fujifilm camera recipe settings directly from screenshots of posts or web pages, or from original JPEG/HEIF files taken by your camera. It can process up to twenty imports at once.

### Can Simu transfer recipes to my camera?

Yes, Simu connects to your Fujifilm camera via USB and writes the extracted or created recipe settings into the camera's C1-C7 custom slots. It backs up existing slots before overwriting and allows for restoring any write.

### Does Simu require an internet connection or account?

No, Simu operates entirely offline without requiring an internet connection, account, cloud AI, or subscription. All processing and data transfer happen locally.

### How can I share Fujifilm recipes using Simu?

You can share any recipe or kit created in Simu as a short code, a link, or a QR code. These codes include a checksum for integrity and contain the entire recipe without needing a server.

### What Fujifilm cameras are supported by Simu?

Currently, the X100VI camera is supported for RAW file development. Simu writes to C1-C7 for other cameras, with RAW development for those models being in beta. The app is available on iPhone and iPad.

### What does Simu do with RAW files?

Simu can develop your camera's RAW files using recipes from its library directly on the camera's processor. The developed pictures are then sent back at full size to be saved to your Photos app.

### How does Simu handle settings not present in a screenshot?

If a setting is mentioned in a recipe but not clearly visible in the screenshot, Simu marks it as 'Unread'. Settings not mentioned in a recipe are written as the camera's neutral values.

### Is Simu free to use?

Yes, Simu is available for free. The application does not have ads or require a subscription, offering its full functionality without cost.

## Version history (last 5 releases)

### 1.2.2 — 2026-11-05

• Developing: fixed photos that came back green when a recipe's dynamic range was higher than the photo's. The photo's own dynamic range and D Range Priority are used.
• Swipe across a developed photo to move from recipe to recipe. The photo changes in place, and every recipe is named in a row below it.
• Every development includes the photo as shot. Hold the picture to compare.

### 1.2.1 — 2026-11-04

Fixed some bugs.

### 1.2 — 2026-10-31

• Develop: the camera develops its own RAW files with recipes from the library. RAF files come in from Photos, recipes are chosen, the camera is connected, and the pictures come back developed by the camera's own processor, at full size, ready to save to Photos.
• The X100VI develops today. The other cameras Simu writes to develop in beta, and a Diagnostics report from a first development helps confirm each one.
• Bug fixes and small improvements.

### 1.1.11 — 2026-10-20

• The X-T4 now takes recipes into C1–C7. 
• On a camera without Smooth Skin Effect, such as the X-T4, X-S20 and X-T30 II, Back Up C1–C7 Now reads all seven slots.
• After a kit is written, the count of checked settings covers only the settings the camera has.

### 1.1.10 — 2026-10-18

• On iPad: a recipe opens beside the list, and the kits sit beside the library, so a recipe is dragged straight into any frame. A USB-C iPad writes to the camera.
• The whole library moves to another iPhone or iPad as one file: Export library in the library menu, then AirDrop it or save it to Files. Recipes already there are not added twice.
• Writes now to the X-Pro3, GFX100 II, GFX100S II, GFX100S and GFX50S II. The four GFX bodies have C1–C6.
• Before the purchase and on the camera screen, Simu names any setting the connected camera does not answer, and the settings a write leaves out.
• On a camera with C1–C4 or C1–C6, a kit names the slots it leaves out and counts only those it writes.
• On an iPhone or iPad with a Lightning port, the unlock screen says that Simu connects from a USB-C iPhone or iPad.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-06.*