Massive Dev Chart Timer vs Histograms Explained
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Offline film development chart
- Multi-step timer with sound notifications
- Customizable agitation schemes
- Darkroom themes
- Dilution mixer
- Automated time/temperature compensation
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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
Histograms Explained
Learn to interpret your camera's histogram for better photography, both underwater and topside. This app de-mystifies histograms with narrated lessons, real-world examples, and quizzes from experienced professionals.
- De-mystifies camera histograms
- Narrated training material
- Real-world photo examples
- Chapter quizzes
- Tips from professional photographers
- Covers luminance and RGB histograms
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Whether you shoot with a Mirrorless, DSLR or a point-and-shoot camera, this easy to use, easy to understand App will quickly improve your underwater photography as your camera's histogram is de-mystified and becomes your new best friend. Information in this App is useful for topside photography as well. Every shooter can benefit greatly from Histograms Explained! Shoot like the pros! Histograms Explained is the second in the series of Underwater Photography Training Applications by David Fleetham & Marty Snyderman. With 80 years of combined professional experience in underwater photography, David and Marty share their tips to help you understand your camera's histogram for better images. This App contains eight sections of training material, fully narrated, with photos taken by David Fleetham and Marty Snyderman to illustrate examples of histograms with their accompanying images, plus other training slides. • Section 1: Your New Best Friend • Section 2: Two Kinds of Histograms • Section 3: Luminance Histograms • Section 4: The Bell Curve Myth • Section 5: Beware of the Goal Posts • Section 6: Making Adjustments • Section 7: RGB Histograms • Section 8: The Color Channels Other features: • Full narration • Easy menu navigation • Right-to-left, left-to-right swipe technology • Chapter quizzes to reinforce learning • One in a series of Underwater Photography Training Applications: Natural Light Images, Coordinating Natural Light and Strobes, Using Strobes Effectively, Silhouettes Underwater and Histograms Explained
Screenshots
Verdict
The clearest difference is update cadence: Massive Dev Chart Timer at every 5 months against Histograms Explained's every 40 months. Massive Dev Chart Timer also leads on rating (3.7 vs 3.3) and review sentiment (71% vs 50%). Histograms Explained's advantage is price ($4.99 vs $9.99). On ads, in-app purchases, monetization model 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
Massive Dev Chart Timer costs $9.99 and Histograms Explained $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Massive Dev Chart Timer holds the better App Store score, 3.7 against 3.3. That said, the two scores are not equally well evidenced: Massive Dev Chart Timer has 54 ratings behind it against 6, 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 50% of Histograms Explained's.
Massive Dev Chart Timer ships an update every 5 months, Histograms Explained every 40 months. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.
| Parameter | Massive Dev Chart Timer | Histograms Explained |
|---|---|---|
| Price | $9.99 | $4.99 — better |
| Rating | 3.7 (54 ratings) — better | 3.3 (6 ratings) |
| Positive reviews | 70.8% of reviews — better | 50.0% of reviews |
| Number of ratings | 54 — better | 6 |
| Update frequency | Every 5 months — better | Every 40 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #24 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 14 MB | 210 MB |
| Age rating | 4+ | 4+ |
| Developer | Freestyle Photo & Imaging | Newmediasoup, LLC |
Customer experience
Massive Dev Chart Timer
Histograms Explained
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
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- 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
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- 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
Histograms Explained
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Massive Dev Chart Timer
No in-app purchases
Histograms Explained
No in-app purchases
Questions
Is Massive Dev Chart Timer free?
Is Histograms Explained free?
Which has better reviews, Massive Dev Chart Timer or Histograms Explained?
Do Massive Dev Chart Timer or Histograms Explained have ads?
Which is updated more often, Massive Dev Chart Timer or Histograms Explained?
Other comparisons
