# Massive Dev Chart Timer vs ObscuraFlex

The clearest difference is price: ObscuraFlex at Free against Massive Dev Chart Timer's $9.99. ObscuraFlex also leads on rating (5.0 vs 3.7) and review sentiment (100% vs 71%). Massive Dev Chart Timer's advantage is ratings volume (55 vs 2) and chart position (#36 vs unranked). On ads and in-app purchases there is nothing between them.

ObscuraFlex is free to download; Massive Dev Chart Timer costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ObscuraFlex holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Massive Dev Chart Timer has 55 ratings behind it against 2, 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 100% of ObscuraFlex's.

Massive Dev Chart Timer ships an update every 5 months, ObscuraFlex every 5 weeks. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Massive Dev Chart Timer | ObscuraFlex |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [3.7 (55 ratings)](https://appshunter.io/ios/app/massive-dev-chart-timer/id402405770/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/obscuraflex/id6503669130/reviews)** |
| Number of ratings | **55** | 2 |
| Positive reviews | 70.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 weeks** |
| Monetization | Paid | **Free** |
| Best chart rank | **#36** | — |
| Size | 14 MB | 1 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Freestyle Photo & Imaging](https://appshunter.io/developer/1786429988) | [Toby Wilkins](https://appshunter.io/developer/1749901957) |

## What reviewers say

### Massive Dev Chart Timer

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

**Currently charting:** #36 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


### ObscuraFlex

[App page](https://appshunter.io/ios/app/obscuraflex/id6503669130)

This app provides a high-resolution, right-side-up live feed of your large format camera's image plane. It enhances composition and focusing, offering greater detail and clarity than a standard ground glass. Use it to shoot stills, video, or reference images alongside your film negatives.

**Highlights:** High-resolution live feed, Right-side-up image display, Composition and focusing aid, Supports various large format cameras, Capture stills and video, Reference image creation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Massive Dev Chart Timer free?

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

### Is ObscuraFlex free?

ObscuraFlex is free to download, with no in-app purchases.

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

ObscuraFlex is rated higher. Massive Dev Chart Timer averages 3.7 out of 5 from 55 ratings, while ObscuraFlex averages 5.0 from 2 ratings.

### Do Massive Dev Chart Timer or ObscuraFlex have ads?

Neither Massive Dev Chart Timer nor ObscuraFlex shows ads.

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

Massive Dev Chart Timer ships an update every 5 months, and ObscuraFlex every 5 weeks. Most recently, Massive Dev Chart Timer was updated on November 6, 2026 and ObscuraFlex on November 4, 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.*