# Massive Dev Chart Timer vs Flash Photography Adviser

The clearest difference is review sentiment: Massive Dev Chart Timer at 71% against Flash Photography Adviser's 0%. Massive Dev Chart Timer also leads on ratings volume (55 vs 2) and chart position (#62 vs unranked). Flash Photography Adviser's advantage is rating (5.0 vs 3.7) and price ($0.99 vs $9.99). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Massive Dev Chart Timer costs $9.99 and Flash Photography Adviser $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Flash Photography Adviser 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 complicate that: 71% of Massive Dev Chart Timer's written reviews are positive against 0% of Flash Photography Adviser's, so the app with the better star average is not the one people write more warmly about.

Massive Dev Chart Timer ships an update every 5 months, Flash Photography Adviser every 7 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Massive Dev Chart Timer | Flash Photography Adviser |
| --- | --- | --- |
| Price | $9.99 | **$0.99** |
| 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/flash-photography-adviser/id1354932744/reviews)** |
| Number of ratings | **55** | 2 |
| Positive reviews | **70.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 7 months |
| Monetization | Paid | Paid |
| Best chart rank | **#62** | — |
| Size | 14 MB | 1 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Freestyle Photo & Imaging](https://appshunter.io/developer/1786429988) | [Rob Duell PhD](https://appshunter.io/developer/1458271389) |

## What reviewers say

### Massive Dev Chart Timer

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

**Currently charting:** #62 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


### Flash Photography Adviser

[App page](https://appshunter.io/ios/app/flash-photography-adviser/id1354932744)

This app helps photographers find optimal flash and camera settings for balanced exposures. It calculates settings like flash coverage, output, distance, ISO, and aperture based on the guide number rule. Users can define and store their own flashguns for personalized recommendations.

**Highlights:** Proposes balanced flash and camera settings, Supports adjusting flash coverage, output, and distance, Calculates camera ISO and aperture, Assists in finding exposure equilibria, Allows defining and storing custom flashguns, Can be used as a training device for settings

**Features:** Vision Pro support

**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 Flash Photography Adviser free?

Flash Photography Adviser costs $0.99, with no in-app purchases.

### Which has better reviews, Massive Dev Chart Timer or Flash Photography Adviser?

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

### Do Massive Dev Chart Timer or Flash Photography Adviser have ads?

Neither Massive Dev Chart Timer nor Flash Photography Adviser shows ads.

### Which is updated more often, Massive Dev Chart Timer or Flash Photography Adviser?

Massive Dev Chart Timer ships an update every 5 months, and Flash Photography Adviser every 7 months. Most recently, Massive Dev Chart Timer was updated on November 6, 2026 and Flash Photography Adviser on November 2, 2026.

---

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