# Manual Flash Calculator — Flash Companion

> Manual flash photography calculator for camera and flash settings. (iPhone/iPad app by Winterink.)

- Source: https://appshunter.io/ios/app/manual-flash-calculator/id6739006004 (this page in markdown: same URL + `.md`)
- Developer: [Winterink](https://appshunter.io/developer/324469683)
- Category: Photo & Video
- Price: $2.99
- Age rating: 4+
- Requires: iOS 18.1 · 2 MB
- Languages: American English
- Released: 2024-12-10
- Data updated: 2026-08-31
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/manual-flash-calculator/id6739006004/reviews.md

## What is Manual Flash Calculator?

Get the Manual Flash Calculator to help configure your camera and flash setting when doing manual flash photography. Based on the flash and camera you use, setting any 3 of the 4 relevant parameters the fourth can be calculated. E.g. calculate the required flash power based on your ISO, F-Stop, subject distance and used flash specifications.

The app support creating a list of the gear you use and combine them in a kit. You can add as much gear as you like and create as many kits to your use cases.  Further to that you can add a flash calculator to a kit. And you can add as many calculators as you want. All data is saved persistently and remains available between sessions.

What is included:
* Gear List. Make an inventory of your gear. This gear list will provide you with a structured overview of the equipment you have in use.
* Kit List. A kit can be seen as a collection of gear you target to use in specific cases. I.e. like for a kit dedicated to street photography, a kit dedicated to nature photography etc. Just create what suits you and add the relevant gear.
* Flash Calculator. Based from your kit a calculator can be added that will use the gear part of the equipment to feed the relevant parameters input to the flash calculator.
* Data is maintained in local database and will persist over several sessions. Add data once and just use it as you see fit.
* Can be used on iPhone, iPad and Mac. It optimizes the use of the available canvas for each
* A detailed release note, with what is new, changed, updated etc., is included in the app

## Key features

- Manual flash photography calculator
- Configure camera and flash settings
- Calculate missing parameter from three inputs
- Create and manage gear lists
- Organize gear into custom kits
- Persistent local data storage

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/manual-flash-calculator/id6739006004/reviews.md

### 1/5 — App won’t open

*2026-03-06*

Waste of money. Was able to add a camera and flash. Upon opening the kit tab, the app crashed and will no longer open at all. Should be given a refund for this worthless app.

**Developer response:** The workaround in this case is to delete the app and restart it. In the app you can request support and get me some more details of what is configured. Then I can validate the issue in this case. Thanks.

### 1/5 — Status

*2025-07-07*

Status No Calculation possible, even with all the items on the list included.

**Developer response:** Thanks for the feedback. What happens more often then not in this case the required data for the flash, i.e. baseISO and Guidenumber are not filled. If these are not set, it actually does not know the flash data and can't calculate. Did you check these settings?

## Frequently asked questions about Manual Flash Calculator

### What is Manual Flash Calculator used for?

Manual Flash Calculator helps photographers configure their camera and flash settings for manual flash photography. It calculates one of four key parameters when the other three are provided, based on your specific gear.

### How does Manual Flash Calculator help with gear?

You can create an inventory of your photography gear and organize it into custom kits for different shooting scenarios. The app then uses this gear information to feed the relevant parameters into the flash calculator.

### Does Manual Flash Calculator work offline?

Yes, all your data, including gear lists and kits, is saved in a local database. This means the app persists data between sessions and can be used without an internet connection.

### What devices is Manual Flash Calculator available on?

Manual Flash Calculator is available on iPhone, iPad, and Mac. It optimizes its interface to best utilize the screen space on each device.

### How often is Manual Flash Calculator updated?

The latest version, v1.9.3, was released on March 23, 2025. The app includes detailed release notes within the app to inform users about new features, changes, and updates.

### What is the price of Manual Flash Calculator?

Manual Flash Calculator is a paid application priced at $2.99. There are no in-app purchases or advertisements mentioned.

### Is Manual Flash Calculator suitable for beginners?

With an age rating of 4+, the app is designed to be accessible. Its primary function is to simplify complex flash calculations, which can be beneficial for photographers learning manual flash techniques.

### Does Manual Flash Calculator have ads?

No, Manual Flash Calculator does not contain advertisements. The app is a paid download and focuses on providing a clean user experience for its core functionality.

## Version history (last 5 releases)

### v1.9.3 — 2025-03-23

* Migrated social media account from X to Bluesky
* News will now be shown automatically when there is new news
* Internal optimization for releasing the release notes.

### v1.8.1 — 2025-02-25

* Bug fix: Setting flash guide number and/or base ISO to 0 caused the app to freeze when the flash was used in a calculator.
* New: added a news view under the settings menu to dynamically share new information to the user base.

### v1.7 — 2025-02-03

* Bugfix release. Was unable to add gear, other then via the pre-fill option.

### v1.6 — 2025-01-22

* Added a new exiting function to view a graph of the flashpower as function of distance. More graphs to follow in future releases.
* Updated the gear library functionality to be more future proof.

### v1.5 — 2025-01-11

Added the ability to add gear details for the category bag and lens. These also have been added to the gear config list that can be downloaded from remote. The onboard/what's new screen will be shown on every new release by default. Further a number of small fixes.

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## More apps by Winterink

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All apps by Winterink: https://appshunter.io/developer/324469683

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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 2026-08-31.*