Massive Dev Chart Timer vs RETO3D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Massive Dev Chart Timer
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.
- Offline film development chart
- Multi-step timer with sound notifications
- Customizable agitation schemes
- Darkroom themes
- Dilution mixer
- Automated time/temperature compensation
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The Massive Dev Chart is the world's largest film development chart with easy to use multi step timer and darkroom support for iPhone and iPad. Watch the instructional video at: https://www.youtube.com/watch?v=P915z6THiY8. *** Features *** • Offline copy of The Massive Dev Chart in your pocket • Multi Step Timer with sound notifications • Customizable agitation scheme • Darkroom themes • Dilution Mixer • Support for two-step development and two-step fixing • Support for optional hypoclear and photo flo steps • Automated development time/temperature compensation
RETO3D
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.
- Generate 3D effect videos
- Select focus point in photos
- Apply various frames
- Crop and rotate video
- One-tap social sharing
- Unlock premium features
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RETO3D APP - a perfect accessory to go along with our RETO3D film camera - assists you in generating videos with 3D effect. Simple and fun! RETO3D allows you to make videos with 3D effect, focusing a center point upon your decision. Various frames are also available to customize your creation. Easy Workflow: 1. Select and upload 3 photos 2. Choose 1 focus point in each photo 3. Crop and rotate the video upon your wish 4. Save and share your creation Remember to share with your friends on social platforms in just one tap! UNLOCK more features, download RETO3D PREMIUM! Leave us reviews to help us do better! To purchase RETO3D film camera, please go to website www.retoproject.com. Contact Email: info@retoproject.com Instagram: @reto.project
Screenshots
Verdict
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 rating (3.7 vs 3.2) and review sentiment (71% vs 36%). On ratings volume, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 36% 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 16, 2026 respectively.
| Parameter | Massive Dev Chart Timer | RETO3D |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 3.7 (55 ratings) — better | 3.2 (37 ratings) |
| Positive reviews | 70.8% of reviews — better | 36.0% of reviews |
| Number of ratings | 55 — better | 37 |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | #21 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 291 MB |
| Age rating | 4+ | 4+ |
| Developer | Freestyle Photo & Imaging | RETO PRODUCTION LIMITED |
Customer experience
Massive Dev Chart Timer
RETO3D
Bugs and requests
Massive Dev Chart Timer
Reported bugs
12 issues- 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
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- UI elements overlap on older iPhone models
- Safelight mode white banner blocks display on iPad
- Crashes during development process
- Home screen line emits bright light in darkroom mode
- App incompatible with newer iOS versions on older devices
- Notes don't word wrap properly
- Inconsistent film/developer availability between iPhone and iPad
Requested features
15 requests- 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
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- Volume calculator for stop bath and fixer
- Background timer functionality
- Custom step name editing
- Pull/push development times
- Stand development support with hour-based timing
- Apple Watch app
- Syncing between iPhone and iPad
- Fahrenheit temperature option
- Additional common film stocks (Portra, Fuji 400H, Ektar)
- Ability to add films not in database to custom times
RETO3D
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Massive Dev Chart Timer
No in-app purchases
RETO3D
No in-app purchases
Questions
Is Massive Dev Chart Timer free?
Is RETO3D free?
Which has better reviews, Massive Dev Chart Timer or RETO3D?
Do Massive Dev Chart Timer or RETO3D have ads?
Which is updated more often, Massive Dev Chart Timer or RETO3D?
Other comparisons
