# Developer Box for Film — B&W film development

> B&W film development (iPhone/iPad app by zlent solutions ou.)

- Source: https://appshunter.io/ios/app/developer-box-for-film/id1580604412 (this page in markdown: same URL + `.md`)
- Developer: [zlent solutions ou](https://appshunter.io/developer/1499220525)
- Category: Photo & Video
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.2 · 4 MB
- Languages: English
- Released: 2021-09-01
- Data updated: 2026-06-12
- User reviews in markdown: https://appshunter.io/ios/app/developer-box-for-film/id1580604412/reviews.md

## What is Developer Box for Film?

This app contains various tools and counters that are useful when developing black and white film. It can be used with most film developer tanks, some adjustments have made to make it fit with the Lab-box from ars-imago. Neither this tool nor the creator of it are affiliated with ars-imago or the Lab-box in anyway.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Donation | $1.99 | one-time |



## Version history (last 5 releases)

### 1.07 — 2023-02-02

Added F-stop converter for 645, M43 and Full frame cameras.

### 1.06 — 2022-07-17

Added a new timer for dark room printing and some minor user interface updates.

### 1.05 — 2022-06-29

Minor corrections to time calculations and added reciprocity failure calculation for selected films.

### 1.04 — 2022-02-05

Minor interface updates and corrections to the inverse square law calculation. Also minor content updates - more will follow!

### 1.02 — 2021-09-21

Another minor expansion, this time a time re-calculator when you need to increase developing or fixing times.

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All apps by zlent solutions ou: https://appshunter.io/developer/1499220525

## Related topics

[film developer](https://appshunter.io/ios/topics/film-developer)

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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 2026-06-12.*