# Lab Assistant: Darkroom Timer — Your darkroom’s best companion

> Your darkroom’s best companion (iPhone/iPad app by Jack Kroll.)

- Source: https://appshunter.io/ios/app/lab-assistant-darkroom-timer/id6754861810 (this page in markdown: same URL + `.md`)
- Developer: [Jack Kroll](https://appshunter.io/developer/1638376186)
- Category: Utilities
- Price: Free with in-app purchases (on sale, was $0.99)
- Age rating: 4+
- Requires: iOS 26.0 · 4 MB
- Languages: English
- Released: 2025-11-25
- Data updated: 2026-07-22
- User reviews in markdown: https://appshunter.io/ios/app/lab-assistant-darkroom-timer/id6754861810/reviews.md

## What is Lab Assistant?

Bring clarity and consistency to your darkroom. Lab Assistant helps you build, edit, and run film development processes with confidence so you can focus on the craft, not stuck in a development book.

Digitize your process and refine your favorite recipes step by step. Add notes, set precise durations, and define agitation patterns. When you’re ready to develop, Lab Assistant guides you with a clean, focused timer interface that keeps you on track from first pour to final rinse.

Whether you're a seasoned printer or developing your first roll, Lab Assistant turns your workflow into repeatable results.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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



## Version history (last 5 releases)

### 1.50 — 2026-06-25

- Added Lab Assistant Pro which introduces Time/Temperature Presets, Autotime, and unlimited workflows 
- Updated the process of setting development times to be much easier and precise
- Fixed various layout issues

### 1.21 — 2026-05-21

Fixed a bug where in some cases the duration of a step would not save properly

### 1.20 — 2026-03-08

Better optimization for smaller displays in landscape mode

### 1.15 — 2025-12-30

- Disabled idle timer for develop page
- Fixed bug with step duration editing being refreshed as seconds instead of minutes

### 1.1 — 2025-12-29

- Fixed a crash  
- Adjusted the timer in the develop view to be more presentable and stylized
- Added reset button to the develop view
- When editing a step, the associated time now syncs properly with saved data

## Apps similar to Lab Assistant

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [easystudy: Survey app](https://appshunter.io/ios/app/easystudy-survey-app/id6463742433) | — | Free | Utilities |
| [JustFilm](https://appshunter.io/ios/app/justfilm/id6477344100) | — | Free | Utilities |
| [DarkroomFlow](https://appshunter.io/ios/app/darkroomflow/id6756948144) | — | Free | Utilities |
| [Thirty Five mm](https://appshunter.io/ios/app/thirty-five-mm/id6739161477) | — | Free | Utilities |
| [Depth of Field Calculator](https://appshunter.io/ios/app/depth-of-field-calculator/id865959989) | — | $2.99 | Utilities |
| [The Film Friend: Light Meter](https://appshunter.io/ios/app/the-film-friend-light-meter/id6759234180) | — | Free | Utilities |

## More apps by Jack Kroll

- [Counter: Simple Tally](https://appshunter.io/ios/app/counter-simple-tally/id1638375914)
- [Minimal Light Meter](https://appshunter.io/ios/app/minimal-light-meter/id6504420435)
- [Map Timer](https://appshunter.io/ios/app/map-timer/id6744300752)
- [hide & seek: play anywhere](https://appshunter.io/ios/app/hide-and-seek-play-anywhere/id6745705866)
- [Cosmic Chaos: Alien Stickers](https://appshunter.io/ios/app/cosmic-chaos-alien-stickers/id6748267870)

All apps by Jack Kroll: https://appshunter.io/developer/1638376186

## Related topics

[darkroom lab timer](https://appshunter.io/ios/topics/darkroom-lab-timer) · [darkroom timer](https://appshunter.io/ios/topics/darkroom-timer)

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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 2026-07-22.*