# Massive Dev Chart Timer vs RETO3D

The clearest difference is price: RETO3D at Free against Massive Dev Chart Timer's $9.99. RETO3D also leads on update cadence (monthly vs every 5 months) and iOS requirement (13.0 vs 15.6). Massive Dev Chart Timer's advantage is review sentiment (71% vs 35%) and rating (3.7 vs 3.2). On ratings volume, ads, in-app purchases and device support there is nothing between them.

RETO3D 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.

Massive Dev Chart Timer holds the better App Store score, 3.7 against 3.2. Both are backed by a comparable volume of ratings — 55 and 37 respectively. Written reviews point the same way: 71% of Massive Dev Chart Timer's written reviews are positive against 35% of RETO3D's.

Massive Dev Chart Timer ships an update every 5 months, RETO3D monthly. The most recent releases landed on October 18, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Massive Dev Chart Timer | RETO3D |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[3.7 (55 ratings)](https://appshunter.io/ios/app/massive-dev-chart-timer/id402405770/reviews)** | [3.2 (37 ratings)](https://appshunter.io/ios/app/reto3d/id1476810662/reviews) |
| Number of ratings | **55** | 37 |
| Positive reviews | **70.8% of reviews** | 35.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#20** | — |
| Size | 14 MB | 291 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Freestyle Photo & Imaging](https://appshunter.io/developer/1786429988) | [RETO PRODUCTION LIMITED](https://appshunter.io/developer/1463746642) |

## 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


### RETO3D

[App page](https://appshunter.io/ios/app/reto3d/id1476810662)

Create engaging 3D effect videos using three photos and a chosen focus point. Customize your creations with various frames and easily share them on social media. Unlock more features with the premium version.

**Highlights:** Generate 3D effect videos, Select focus point in photos, Apply various frames, Crop and rotate video, One-tap social sharing, Unlock premium features

**Features:** macOS Compatibility, 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 RETO3D free?

RETO3D is free to download, with no in-app purchases.

### Which has better reviews, Massive Dev Chart Timer or RETO3D?

Massive Dev Chart Timer is rated higher. Massive Dev Chart Timer averages 3.7 out of 5 from 55 ratings, while RETO3D averages 3.2 from 37 ratings.

### Do Massive Dev Chart Timer or RETO3D have ads?

Neither Massive Dev Chart Timer nor RETO3D shows ads.

### Which is updated more often, Massive Dev Chart Timer or RETO3D?

Massive Dev Chart Timer ships an update every 5 months, and RETO3D monthly. Most recently, Massive Dev Chart Timer was updated on October 18, 2026 and RETO3D on October 20, 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.*