# Massive Dev Chart Timer vs LightBox Extra

The clearest difference is price: LightBox Extra at Free against Massive Dev Chart Timer's $9.99. LightBox Extra also leads on iOS requirement (8.0 vs 12.0). Massive Dev Chart Timer's advantage is review sentiment (71% vs 28%) and rating (3.7 vs 2.3). On ratings volume, ads and device support there is nothing between them.

LightBox Extra is free to download; Massive Dev Chart Timer costs $9.99 up front. LightBox Extra sells 1 one-off in-app purchase. Massive Dev Chart Timer asks for nothing beyond the download.

Massive Dev Chart Timer holds the better App Store score, 3.7 against 2.3. Both are backed by a comparable volume of ratings — 54 and 19 respectively. Written reviews point the same way: 71% of Massive Dev Chart Timer's written reviews are positive against 28% of LightBox Extra's.

Massive Dev Chart Timer ships an update every 5 months, LightBox Extra every 13 months. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Massive Dev Chart Timer | LightBox Extra |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[3.7 (54 ratings)](https://appshunter.io/ios/app/massive-dev-chart-timer/id402405770/reviews)** | [2.3 (19 ratings)](https://appshunter.io/ios/app/lightbox-extra/id825134948/reviews) |
| Number of ratings | **54** | 19 |
| Positive reviews | **70.8% of reviews** | 27.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 13 months |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#33** | — |
| Size | 14 MB | 31 MB |
| Requires iOS | 12.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Freestyle Photo & Imaging](https://appshunter.io/developer/1786429988) | [SkyCharts LLC](https://appshunter.io/developer/300623345) |

## What reviewers say

### Massive Dev Chart Timer

[App page](https://appshunter.io/ios/app/massive-dev-chart-timer/id402405770)

**Currently charting:** #33 Top Paid · Photo & Video (US App Store)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 📚 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

**What reviewers complain about**

- 🚫 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

**Reported bugs**

- 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

**Requested features**

- 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


### LightBox Extra

[App page](https://appshunter.io/ios/app/lightbox-extra/id825134948)

Easily view 35mm negatives and slides on your iOS device. Customize the background for optimal viewing and the app remembers your preferred settings.

**Highlights:** View 35mm negatives and slides, Customizable white background, Background adjusts to negative/slide area, Resizes for all iOS7 devices, Remembers custom box sizes

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Massive Dev Chart Timer free?

Massive Dev Chart Timer costs $9.99, with no in-app purchases.

### Is LightBox Extra free?

LightBox Extra is free to download, with in-app purchases available.

### Which has better reviews, Massive Dev Chart Timer or LightBox Extra?

Massive Dev Chart Timer is rated higher. Massive Dev Chart Timer averages 3.7 out of 5 from 54 ratings, while LightBox Extra averages 2.3 from 19 ratings.

### Do Massive Dev Chart Timer or LightBox Extra have ads?

Neither Massive Dev Chart Timer nor LightBox Extra shows ads.

### Which is updated more often, Massive Dev Chart Timer or LightBox Extra?

Massive Dev Chart Timer ships an update every 5 months, and LightBox Extra every 13 months. Most recently, Massive Dev Chart Timer was updated on October 14, 2026 and LightBox Extra on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*