Comparison

Massive Dev Chart Timer vs Darkr

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Massive Dev Chart Timer

This app provides an offline film development chart and a multi-step timer for photographers. It includes customizable agitation, darkroom themes, and support for various developing and fixing steps. It also offers automated compensation for development time and temperature.

Highlights
  • Offline film development chart
  • Multi-step timer with sound notifications
  • Customizable agitation schemes
  • Darkroom themes
  • Dilution mixer
  • Automated time/temperature compensation
Features
Read full description

The Massive Dev Chart is the world's largest film development chart with easy to use multi step timer and darkroom support for iPhone and iPad. Watch the instructional video at: https://www.youtube.com/watch?v=P915z6THiY8. *** 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

About

Darkr

This app simulates the experience of a traditional darkroom, allowing you to edit photos in black and white with tools like dodge, burn, and toning. It also features a manual camera with different format models to help you learn photography techniques.

Highlights
  • Darkroom simulation
  • Black and white editing
  • Dodge and burn tools
  • Image toning (Selenium, Cyanotype, Sepia)
  • Layer-based effects
  • Manual camera with tilt/shift
  • Multiple camera formats
Features
Read full description

3 million downloads Featured as Today's app in many countries and is the perfect app for learning photography. "Darkr actually taught us how to frame pictures better" - AppleInsider Have you ever dreamt of trying an old darkroom, but don't have the equipment nor the time? Now you can, and without getting wet. DARKROOM In a fun and intuitive way you will pick the strip that has the best time and contrast. And just like a real darkroom, you can make parts of the image brighter and darker by blocking or adding more light to the image. You will be presented in a very easy way with lots of tutorials on how to use the tools. The images will only be in black and white (but you may tone them). DARKROOM FEATURES + Develop either your images from your camera-roll or taken by the Large-Format camera + Only Black & White + Stripes - As in a real darkroom you'll have to find the best strip. It will be challenging, fun and very powerful + Crop / Rotate - Both crop and rotate the image in the same tool + Dodge - Make a selected part of the image brighter. + Burn - Make a selected part of the image darker + Blur - Enhance the background with some beautiful blurriness. + Tone - Tone the images with various strength. The toners that can be used are Selenium, Cyanotype and Sepia. + Layers - You can add as many effects as you want. Each effect will be treated as a layer that can be edited, deleted and changed its visibility. + Zoom - You can zoom the image ten times. This will make it really easy to make the detailed work. + Metal - Darkr uses Metal, the drawing is fast and very fluid. CAMERA By shooting with a large-format camera where the image is upside-down you will actually get more control over the image. The camera is only manual and back in the old days you could not even zoom with the camera, you had to walk. You will be forced to slow down the process and by doing so, your photographs will be so much better. At first it may feel a bit odd to look at the upside-down image and it can even be a bit challanging to know if you should move the camera to the left or right when framing the image. Sometimes you will even laugh at yourself, but the more you use it, the less you will even have to think about it. MORE CAMERA-MODELS Darkr has now added two more camera-models. + Medium-format which will produce a square image and just as the large-format camera it is manual. + Pinhole-camera which is a real basic camera where you pretty much only shoot at what you see. Nothing to set up with, nor zoom. CAMERA FEATURES + Manual - Just as in a real old analog camera, it is only manual + Shutter / ISO - You will set these individually + Focus - With a beautiful crafted loupe, you will get full control over the sharpness + Tilt / Shift - Just as a large-format camera you will be able to straight up any lines + 4x5" - The negative's size will be in the 4x5-ratio as the most popular large-format camera does SHARE You can naturally share both the negatives and prints. You can optimize the resolution to lots of social media's sites like Facebook, Instagram, Twitter IN-APP PURCHASE Darkr is free to download, but the following features requires in-app purchase to be available. These in-app purchases are one-time purchase, so you don't have to worry about a subscription. Large-format camera Medium-format camera Edit layers Simulate film-emulsion Tone the image SUPPORT We are eager to hear from you. We just love to hear both good stuff and bad stuff. And it's much likely that your opinion will be added into the next update. Please don't hesitate to contact us at: support@miiam.net

Screenshots

Massive Dev Chart Timer4 screens
Darkr4 screens

Verdict

The call

The clearest difference is price: Darkr at Free against Massive Dev Chart Timer's $9.99. Darkr also leads on rating (4.7 vs 3.7) and update cadence (every 3 weeks vs every 5 months). Massive Dev Chart Timer's advantage is in-app purchases (none vs 11) and chart position (#25 vs unranked). On review sentiment, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Darkr is free to download; Massive Dev Chart Timer costs $9.99 up front. Darkr sells 11 one-off in-app purchases. Massive Dev Chart Timer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Darkr holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: Darkr has 3.5K ratings behind it against 54, so its average is the more settled of the two. Written reviews point the same way: 71% of Massive Dev Chart Timer's written reviews are positive against 75% of Darkr's.

UpkeepUpdate frequency

Massive Dev Chart Timer ships an update every 5 months, Darkr every 3 weeks. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

Scorecard8 real differences · 3 level
Massive Dev Chart Timer versus Darkr: the parameters behind the verdict, then further details
ParameterMassive Dev Chart TimerDarkr
Price$9.99Free — better
Rating3.7 (54 ratings)4.7 (3.5K ratings) — better
Positive reviews70.8% of reviews74.6% of reviews — better
Number of ratings543.5K — better
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#25 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.6
Further details — not scored
Size14 MB109 MB
Age rating4+4+
DeveloperFreestyle Photo & ImagingMarcus Carlsson

Customer experience

Massive Dev Chart Timer

All ratings54 ratings
Positive63.0%
Neutral7.4%
Negative29.6%
Written reviews216 reviews
Positive70.8%
Neutral8.3%
Negative20.8%

Darkr

All ratings3,522 ratings
Positive92.4%
Neutral2.7%
Negative4.9%
Written reviews790 reviews
Positive74.6%
Neutral6.6%
Negative18.9%

User reviews

Massive Dev Chart Timer

From 54 App Store ratings

What we love

  • 📚 Comprehensive film and developer database
  • ⏱️ Reliable timer with agitation reminders
  • 🎯 Easy-to-use interface for darkroom work
  • 🌙 Darkroom mode with red/black display
  • ✏️ Customizable development times and profiles

Room to improve

  • 🚫 Black and white film only (no color film support)
  • 🐛 Recent update broke HC110 dilution display
  • 🐛 App crashes on certain devices/iOS versions
  • 💰 Price point ($8.99-$11.99) for limited functionality
  • 🔍 Poor search functionality for films

Darkr

From 3.5K App Store ratings

What we love

  • 🚀 Excellent black and white photography
  • 👍 Realistic darkroom experience
  • 💡 Unique and creative features
  • 🎨 Impressive photo editing capabilities
  • 🤓 Helpful tutorials and instructions

Room to improve

  • 🐛 Crashes and freezes
  • 🤔 Confusing and unintuitive interface
  • 💸 Paywall for full functionality
  • 📱 Compatibility issues on certain devices
  • 🔍 Lack of clear guidance and documentation

Bugs and requests

Massive Dev Chart Timer

Reported bugs

12 issues
  • HC110 dilution section displays only letters, not ratios
  • Dilution ratios not calculating when solution amount adjusted
  • App crashes after selecting film speed
  • Crashes on iPad with new update
  • Timer display shows three dots instead of seconds
Show 7 more
  • UI elements overlap on older iPhone models
  • Safelight mode white banner blocks display on iPad
  • Crashes during development process
  • Home screen line emits bright light in darkroom mode
  • App incompatible with newer iOS versions on older devices
  • Notes don't word wrap properly
  • Inconsistent film/developer availability between iPhone and iPad

Requested features

15 requests
  • Color film support (C-41, E-6, ECN-2 processes)
  • Search functionality by film brand/name
  • Ability to add custom process steps (presoak, toning)
  • Individual agitation control per development stage
  • Continuous agitation option
Show 10 more
  • Volume calculator for stop bath and fixer
  • Background timer functionality
  • Custom step name editing
  • Pull/push development times
  • Stand development support with hour-based timing
  • Apple Watch app
  • Syncing between iPhone and iPad
  • Fahrenheit temperature option
  • Additional common film stocks (Portra, Fuji 400H, Ektar)
  • Ability to add films not in database to custom times

Darkr

Reported bugs

3 issues
  • Upside down camera orientation
  • Purchased features not working across devices
  • Masking and layering tools not functioning properly

Requested features

5 requests
  • Ability to import and edit existing photos
  • More film and paper emulation options
  • Landscape mode support for iPad
  • Customizable controls and UI
  • Improved dodge and burn tools

In-app purchases

None

Massive Dev Chart Timer

No in-app purchases

11 purchases

Darkr

One-time11
  • Many similar layersFree
  • Large-format camera$1.99
  • Medium-format camera$1.99
Show 8 more
  • Loyal Master$1.99
  • Loyal photographer$1.99
  • Film with grain$1.99
  • Layers$2.99
  • Pro+$2.99
  • Tone the image$2.99
  • Pro$3.99
  • Full Access$4.99

Questions

Is Massive Dev Chart Timer free?
Massive Dev Chart Timer costs $9.99, with no in-app purchases.
Is Darkr free?
Darkr is free to download, with in-app purchases available.
Which has better reviews, Massive Dev Chart Timer or Darkr?
Darkr is rated higher. Massive Dev Chart Timer averages 3.7 out of 5 from 54 ratings, while Darkr averages 4.7 from 3.5K ratings.
Do Massive Dev Chart Timer or Darkr have ads?
Neither Massive Dev Chart Timer nor Darkr shows ads.
Which is updated more often, Massive Dev Chart Timer or Darkr?
Massive Dev Chart Timer ships an update every 5 months, and Darkr every 3 weeks. Most recently, Massive Dev Chart Timer was updated on September 23, 2026 and Darkr on September 24, 2026.

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