# Massive Dev Chart Timer vs Reciprocity Timer

The clearest difference is rating: Massive Dev Chart Timer at 3.7 against Reciprocity Timer's 2.5. Massive Dev Chart Timer also leads on review sentiment (71% vs 33%) and in-app purchases (none vs 1). Reciprocity Timer's advantage is price ($1.99 vs $9.99) and update cadence (every 2 months vs every 5 months). On ads, device support and iOS requirement there is nothing between them.

Massive Dev Chart Timer costs $9.99 and Reciprocity Timer $1.99 up front. Reciprocity Timer 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 2.5. That said, the two scores are not equally well evidenced: Massive Dev Chart Timer has 54 ratings behind it against 4, 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 33% of Reciprocity Timer's.

Massive Dev Chart Timer ships an update every 5 months, Reciprocity Timer every 2 months. The most recent releases landed on September 23, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Massive Dev Chart Timer | Reciprocity Timer |
| --- | --- | --- |
| Price | $9.99 | **$1.99** |
| Rating | **[3.7 (54 ratings)](https://appshunter.io/ios/app/massive-dev-chart-timer/id402405770/reviews)** | [2.5 (4 ratings)](https://appshunter.io/ios/app/reciprocity-timer/id459691262/reviews) |
| Number of ratings | **54** | 4 |
| Positive reviews | **70.8% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#20** | #85 |
| Size | 14 MB | 28 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Freestyle Photo & Imaging](https://appshunter.io/developer/1786429988) | [Pump Interactive](https://appshunter.io/developer/459691265) |

## What reviewers say

### Massive Dev Chart Timer

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

**Currently charting:** #20 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


### Reciprocity Timer

[App page](https://appshunter.io/ios/app/reciprocity-timer/id459691262)

**Currently charting:** #85 Top Paid · Photo & Video (US App Store)

This app helps film photographers calculate exposure compensation for reciprocity failure. It offers a standard version for basic calculations and a pro version with advanced features like note-taking and custom film databases. It also includes an exposure timer and filter compensation tools.

**Highlights:** Reciprocity compensation calculations, Exposure timer, Filter compensation slider, Note-keeping feature, Custom film and camera databases, Film stock favorites

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reciprocity Timer Pro | $9.99 | one-time |


## Frequently asked questions

### Is Massive Dev Chart Timer free?

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

### Is Reciprocity Timer free?

Reciprocity Timer costs $1.99, and also offers in-app purchases.

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

Massive Dev Chart Timer is rated higher. Massive Dev Chart Timer averages 3.7 out of 5 from 54 ratings, while Reciprocity Timer averages 2.5 from 4 ratings.

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

Neither Massive Dev Chart Timer nor Reciprocity Timer shows ads.

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

Massive Dev Chart Timer ships an update every 5 months, and Reciprocity Timer every 2 months. Most recently, Massive Dev Chart Timer was updated on September 23, 2026 and Reciprocity Timer on September 25, 2026.

### Which is more popular, Massive Dev Chart Timer or Reciprocity Timer?

Massive Dev Chart Timer currently peaks at #20 in the App Store charts, and Reciprocity Timer at #85. Chart position reflects recent download velocity rather than total install base.

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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.*