Massive Dev Chart Timer vs Light Panel 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
Light Panel Pro
Transform your device into a professional lighting tool for creative projects, film scanning, and video calls. Adjust brightness, color temperature, and RGB hues to enhance any scene. Give your existing technology a vibrant new purpose.
- Pocket-sized professional light
- Creative lighting control
- Film scanning
- Video call enhancement
- Brightness adjustment
- Kelvin temperature control
- RGB color control
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Light Panel Pro: Transform your device into a professional studio light. Perfect for creative lighting, film scanning and video calls. Control screen brightness, Kelvin temperature and full RGB color on any Apple device. • Light Panel Pro turns your mobile device into a portable light panel - one that you always have with you as a small fill light for photography or videography. • Light Panel Pro is a perfect backlight for scanning film with its dedicated scanning mask. It can also be used as a light table or light box with the built-in alignment grid. • Light Panel Pro is a great light for video calls. • Control screen brightness and temperature. Display & save arbitrary colors for creative lighting effects. • Automatically match the color temperature of the ambient light. • Lock screen settings from accidental touch input. • Create complex or remote lighting setups with the optional Remote Control feature. • There are many other potential uses whenever you need extra light: reading light, mood light, torch etc. • Give your old tech a brilliant second life - great for transforming old devices that can't run recent versions of iOS (iPad Air 1st gen & iPhone 5s onwards) into high-quality light panels, offering a highly cost-effective solution by repurposing hardware that might otherwise go unused. • Available as a universal purchase for iPad, iPhone, iPod Touch, Mac, Apple TV & Vision Pro. • Print magazine PC Professionale recommended Light Panel Pro as "Original and unexpectedly useful" in the July 2021 edition! Join 5000 happy users and download Light Panel Pro now !
Screenshots
Verdict
The clearest difference is rating: Light Panel Pro at 4.5 against Massive Dev Chart Timer's 3.7. Light Panel Pro also leads on price ($4.99 vs $9.99) and update cadence (every 6 weeks vs every 5 months). Massive Dev Chart Timer's advantage is in-app purchases (none vs 2) and chart position (#35 vs unranked). On ratings volume and ads 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 Light Panel Pro $4.99 up front. Light Panel Pro sells 2 one-off in-app purchases. Massive Dev Chart Timer asks for nothing beyond the download.
Light Panel Pro holds the better App Store score, 4.5 against 3.7. Both are backed by a comparable volume of ratings — 54 and 68 respectively. Written reviews point the same way: 71% of Massive Dev Chart Timer's written reviews are positive against 85% of Light Panel Pro's.
Massive Dev Chart Timer ships an update every 5 months, Light Panel Pro every 6 weeks. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.
| Parameter | Massive Dev Chart Timer | Light Panel Pro |
|---|---|---|
| Price | $9.99 | $4.99 — better |
| Rating | 3.7 (54 ratings) | 4.5 (68 ratings) — better |
| Positive reviews | 70.8% of reviews | 85.0% of reviews — better |
| Number of ratings | 54 | 68 — better |
| Update frequency | Every 5 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | #35 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac, Apple TV — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 14 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Freestyle Photo & Imaging | Mike Woolley |
Customer experience
Massive Dev Chart Timer
Light Panel Pro
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
Light Panel Pro
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Massive Dev Chart Timer
No in-app purchases
Light Panel Pro
- Buy Me A Coffee$2.99
- Remote Control$9.99
Questions
Is Massive Dev Chart Timer free?
Is Light Panel Pro free?
Which has better reviews, Massive Dev Chart Timer or Light Panel Pro?
Do Massive Dev Chart Timer or Light Panel Pro have ads?
Which is updated more often, Massive Dev Chart Timer or Light Panel Pro?
Other comparisons
