The Massive Dev Chart is the world's largest film development chart with easy to use multi step timer and darkroom support for iPhone, iPad and iPod Touch. Watch the instructional video at:

*** Reviews ***

"If you use a darkroom, or if you dev the odd roll at your kitchen sink, buy it. Essential: 10/10"

"The Massive Dev App... is well worth it. I highly recommend this iPhone app."

"...solidly built and extremely well thought out app. Everything works in an extremely intuitive manner, and the audio reminders are extremely helpful."

*** Features ***

• Offline copy of The Massive Dev Chart in your pocket
• Multi Step Timer with sound notifications
• Customizable agitation scheme
• Darkroom themes
• Dilution Mixer
• Support for two-step development and two-step fixing
• Support for optional hypoclear and photo flo steps
• Automated development time/temperature compensation

What’s New

Version 4.1.1

Minor bugfixes
Dark Mode compatibility fix
New percentage adjustment calculator
New default film option
Fixed and updated Share feature
Latest database

Ratings and Reviews

4.2 out of 5
23 Ratings

23 Ratings

Earlrond ,

Latest upgrade broke on iPhone 4S

I’ve been using this app for quite some time, and must say it is very useful when I develop black and white film, and I rather like it. However the latest upgrade broke on my iPhone 4S despite the fact that the phone is running iOS 9.3.5, which the app is supposed to run on. The problem is that UI elements tend to overlap on the screen, making some parameters impossible to change. (Example: trying to turn on time-temperature conversions changes the temperature setting! I tried using a stylus instead of my finger but it didn’t do any good.) The app works fine on my iPhone 6S+, but as that is my primary phone I’d rather not expose it to chemicals - that’s what I use the old 4S for. Guess I won’t have a choice until the problem is fixed in a future update.

Could I make another suggestion? Please allow different agitation regimens for developing and fixing.

Lenscratch ,

Truly amazing

This has pretty much every type of film/developer I use. It’s an amazing app that makes developing super easy and it allows you to customize and make adjustments as needed. It would be amazing for them to include color film options, especially since c-41 kits are becoming more popular and obtainable for at home developing.

52 Cameras ,

Love the web site - the app not so much.

Can't give "My times" steps meaningful titles - if your work flow deviates at all, it can't be saved in a useful way. Notes don't word wrap so you can see them. An app this mature should at least be aware of new sentences - auto capitalization is built in to the OS. I do enough traditional processing to probably keep it but pretty sad for 9 bucks.


Digitaltruth Photo Ltd
10.3 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Chinese, Czech, French, German, Japanese, Polish, Portuguese, Russian, Spanish

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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