# Massive Dev Chart Timer vs Long Exposure Calculator

The clearest difference is price: Long Exposure Calculator at Free against Massive Dev Chart Timer's $9.99. Long Exposure Calculator also leads on rating (4.4 vs 3.7) and review sentiment (82% vs 71%). Massive Dev Chart Timer's advantage is in-app purchases (none vs 6) and ads (none vs shown). On ratings volume and device support there is nothing between them.

Long Exposure Calculator is free to download; Massive Dev Chart Timer costs $9.99 up front. Long Exposure Calculator sells 6 one-off in-app purchases. Massive Dev Chart Timer asks for nothing beyond the download.

Long Exposure Calculator holds the better App Store score, 4.4 against 3.7. Both are backed by a comparable volume of ratings — 55 and 64 respectively. Written reviews point the same way: 71% of Massive Dev Chart Timer's written reviews are positive against 82% of Long Exposure Calculator's.

Massive Dev Chart Timer ships an update every 5 months, Long Exposure Calculator every 19 months. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Massive Dev Chart Timer | Long Exposure Calculator |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [3.7 (55 ratings)](https://appshunter.io/ios/app/massive-dev-chart-timer/id402405770/reviews) | **[4.4 (64 ratings)](https://appshunter.io/ios/app/long-exposure-calculator/id694553269/reviews)** |
| Number of ratings | 55 | **64** |
| Positive reviews | 70.8% of reviews | **81.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 months** | Every 19 months |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#32** | — |
| Size | 14 MB | 24 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Freestyle Photo & Imaging](https://appshunter.io/developer/1786429988) | [Junel Corales](https://appshunter.io/developer/694553272) |

## What reviewers say

### Massive Dev Chart Timer

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

**Currently charting:** #32 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


### Long Exposure Calculator

[App page](https://appshunter.io/ios/app/long-exposure-calculator/id694553269)

Calculate precise exposure times for long-exposure photography with Neutral Density filters. Features a countdown timer for exposures over 10 seconds and supports up to 24 stops of ND filtration.

**Highlights:** ND filter exposure calculation, Countdown timer, Supports up to 24-stop ND filters, Simple to use

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Leave a Tip | $1.99 | one-time |
| Leave a Tip | $2.99 | one-time |
| Leave a Tip | $3.99 | one-time |
| Leave a Tip | $5.99 | one-time |
| Leave a Tip | $9.99 | one-time |
| Leave a tip | $14.99 | one-time |

**What reviewers like**

- 👍 Simple and intuitive interface
- 🚀 Fast and efficient calculations
- ✅ Accurate results
- 💡 Versatile ND filter notation options
- 🎨 Offers light and dark color schemes

**What reviewers complain about**

- ⚠️ Ads can be intrusive and accidentally tappable
- 🤔 Some users confused by filter notation settings
- 🚫 Does not factor in aperture
- ⏳ Timer only starts from 30 seconds
- ❌ App freezes or crashes after use/updates

**Reported bugs**

- App freezes after each use
- App crashes after update
- App freezes and needs to be closed and reopened
- App runs no more after iOS update
- App crashes and cannot be opened again

**Requested features**

- Filter bag feature to select owned filters
- Ability to edit existing filters for precise values
- Combine multiple filters in calculations
- Option to display calculated time in seconds only
- Acoustic signal/alarm at the end of the timer


## Frequently asked questions

### Is Massive Dev Chart Timer free?

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

### Is Long Exposure Calculator free?

Long Exposure Calculator is free to download, with in-app purchases available.

### Which has better reviews, Massive Dev Chart Timer or Long Exposure Calculator?

Long Exposure Calculator is rated higher. Massive Dev Chart Timer averages 3.7 out of 5 from 55 ratings, while Long Exposure Calculator averages 4.4 from 64 ratings.

### Do Massive Dev Chart Timer or Long Exposure Calculator have ads?

Long Exposure Calculator shows ads; Massive Dev Chart Timer does not.

### Which is updated more often, Massive Dev Chart Timer or Long Exposure Calculator?

Massive Dev Chart Timer ships an update every 5 months, and Long Exposure Calculator every 19 months. Most recently, Massive Dev Chart Timer was updated on October 23, 2026 and Long Exposure Calculator on October 21, 2026.

---

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