Massive Dev Chart Timer vs myLightMeter PRO
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
myLightMeter PRO
This app provides precise exposure metering for photographers, supporting both digital and analog workflows. It offers a comprehensive set of manual controls and advanced tools like a hyperfocal distance calculator.
- Extended low-light sensitivity
- Incident and reflected metering
- Manual exposure control
- Hyperfocal distance calculator
- Save and review exposure data
- Extract exposure data from photos
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Designed by a photographer, for photographers. Built for reliable, precise exposure measurement across film and digital workflows. myLightMeter PRO gives you full control over exposure through a clean, professional set of tools. Key Features • Incident and reflected-light metering • Classic and Pro interface styles • Full manual control over aperture, shutter speed, ISO, and exposure compensation in 1/3- or 1/2-stop increments • Exposure range from 4 hours in Long Exposure mode to 1/8000 s, f/1.0 to f/512, and ISO 0.8 to 409,600 • Aperture-priority (Av) and shutter-priority (Tv) modes • Automatic ISO adjustment or ISO lock • Reciprocity correction for long film exposures • Sensitivity down to −2.5 EV, ideal for low-light scenes • Average multiple readings • Import shutter speed, aperture, and ISO from photos in your library • Organize readings into Sessions with photos, exposure data, camera and lens details, and notes • Keep your Sessions synced through iCloud, so they remain available when you switch phones or use another device • Export Sessions as PDFs or print them Advanced Tools • Hyperfocal-distance calculator • Five configurable presets, each storing camera, lens, ISO, filter, and film settings • EV display with an analog scale or numerical reading • mySPOTMETER and f/Tools integration About This app is built and maintained by an independent photographer and developer. It is the tool I personally use and continuously refine. If you have suggestions or need support, contact me at: davidquiles@me.com
Screenshots
Verdict
The clearest difference is rating: myLightMeter PRO at 4.8 against Massive Dev Chart Timer's 3.7. myLightMeter PRO also leads on update cadence (every 5 days vs every 5 months) and price ($4.99 vs $9.99). Massive Dev Chart Timer's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On ads, in-app purchases, monetization model and chart position 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 myLightMeter PRO $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
myLightMeter PRO holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: myLightMeter PRO has 1.1K 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 90% of myLightMeter PRO's.
Massive Dev Chart Timer ships an update every 5 months, myLightMeter PRO every 5 days. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.
| Parameter | Massive Dev Chart Timer | myLightMeter PRO |
|---|---|---|
| Price | $9.99 | $4.99 — better |
| Rating | 3.7 (54 ratings) | 4.8 (1.1K ratings) — better |
| Positive reviews | 70.8% of reviews | 90.2% of reviews — better |
| Number of ratings | 54 | 1.1K — better |
| Update frequency | Every 5 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #18 | #11 — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 14 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Freestyle Photo & Imaging | David Quiles |
Customer experience
Massive Dev Chart Timer
myLightMeter PRO
User reviews
Massive Dev Chart Timer
From 54 App Store ratingsWhat 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
myLightMeter PRO
From 1.1K App Store ratingsWhat we love
- 🚀 Accurate and reliable
- 👍 Convenient and easy to use
- 🔍 Useful for vintage/manual cameras
- 💡 Helpful for learning photography
- ⭐ Excellent value for money
Room to improve
- 🐛 Crashes and bugs in recent versions
- 🔍 Spot metering mode not precise enough
- 🔧 Needs more customization options
- 🔋 Volume control issues
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
myLightMeter PRO
Reported bugs
3 issues- Crashes on startup
- Inconsistent behavior between free and pro versions
- Incorrect shutter speed and aperture options for some cameras
Requested features
4 requests- Ability to lock shutter speed and aperture
- Smaller spot metering area
- Support for more film/sensor formats
- Improved incident metering with diffuser
In-app purchases
Massive Dev Chart Timer
No in-app purchases
myLightMeter PRO
No in-app purchases
Questions
Is Massive Dev Chart Timer free?
Is myLightMeter PRO free?
Which has better reviews, Massive Dev Chart Timer or myLightMeter PRO?
Do Massive Dev Chart Timer or myLightMeter PRO have ads?
Which is updated more often, Massive Dev Chart Timer or myLightMeter PRO?
Which is more popular, Massive Dev Chart Timer or myLightMeter PRO?
Other comparisons
