Massive Dev Chart Timer vs Manual Flash Calculator
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
Manual Flash Calculator
This app assists photographers by calculating camera and flash settings for manual flash photography. It allows users to create gear lists and kits, and then use this information to determine the fourth parameter (like flash power) when any three of the four relevant settings are known.
- Manual flash photography calculator
- Configure camera and flash settings
- Calculate missing parameter from three inputs
- Create and manage gear lists
- Organize gear into custom kits
- Persistent local data storage
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Get the Manual Flash Calculator to help configure your camera and flash setting when doing manual flash photography. Based on the flash and camera you use, setting any 3 of the 4 relevant parameters the fourth can be calculated. E.g. calculate the required flash power based on your ISO, F-Stop, subject distance and used flash specifications. The app support creating a list of the gear you use and combine them in a kit. You can add as much gear as you like and create as many kits to your use cases. Further to that you can add a flash calculator to a kit. And you can add as many calculators as you want. All data is saved persistently and remains available between sessions. What is included: * Gear List. Make an inventory of your gear. This gear list will provide you with a structured overview of the equipment you have in use. * Kit List. A kit can be seen as a collection of gear you target to use in specific cases. I.e. like for a kit dedicated to street photography, a kit dedicated to nature photography etc. Just create what suits you and add the relevant gear. * Flash Calculator. Based from your kit a calculator can be added that will use the gear part of the equipment to feed the relevant parameters input to the flash calculator. * Data is maintained in local database and will persist over several sessions. Add data once and just use it as you see fit. * Can be used on iPhone, iPad and Mac. It optimizes the use of the available canvas for each * A detailed release note, with what is new, changed, updated etc., is included in the app
Screenshots
Verdict
The clearest difference is review sentiment: Massive Dev Chart Timer at 71% against Manual Flash Calculator's 0%. Massive Dev Chart Timer also leads on chart position (#40 vs unranked) and iOS requirement (12.0 vs 18.1). Manual Flash Calculator's advantage is price ($2.99 vs $9.99) and update cadence (every 11 days vs every 5 months). 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 Manual Flash Calculator $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Massive Dev Chart Timer ships an update every 5 months, Manual Flash Calculator every 11 days. The most recent releases landed on September 23, 2026 and September 12, 2026 respectively.
| Parameter | Massive Dev Chart Timer | Manual Flash Calculator |
|---|---|---|
| Price | $9.99 | $2.99 — better |
| Rating | 3.7 (54 ratings) — better | — |
| Positive reviews | 70.8% of reviews — better | 0.0% of reviews |
| Number of ratings | 54 — better | — |
| Update frequency | Every 5 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #40 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 18.1 |
| Further details — not scored | ||
| Size | 14 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Freestyle Photo & Imaging | Winterink |
Customer experience
Massive Dev Chart Timer
Manual Flash Calculator
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
Manual Flash Calculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Massive Dev Chart Timer
No in-app purchases
Manual Flash Calculator
No in-app purchases
Questions
Is Massive Dev Chart Timer free?
Is Manual Flash Calculator free?
Do Massive Dev Chart Timer or Manual Flash Calculator have ads?
Which is updated more often, Massive Dev Chart Timer or Manual Flash Calculator?
Other comparisons
