PhotoTropedelic vs Zone Tool
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PhotoTropedelic
Transform your photos into unique Pop Art masterpieces. This app analyzes your images and applies the vibrant colors, textures, and symbols of 1960s Pop Art to create bold, distinctive artwork.
- Advanced image processing
- Pop Art style transformation
- Color and texture analysis
- Unique art generation
- 60s Pop Art inspiration
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PhotoTropedelic uses advanced image processing techniques to analyze your ordinary photographs -- translate the colors, textures, and lighting -- and draw upon the colors and symbols of 60's Pop Art to produce boldly unique art.
Zone Tool
Calculate photographic exposure and development adjustments using zone system theory. Measure shadows and highlights, input film ISO and desired shutter speed to determine aperture and development time modifications.
- Zone system exposure calculation
- Shadow and highlight measurement
- Film ISO input
- Shutter speed adjustment
- Development time calculation
- Aperture determination
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With this tool you can calculate your exposure and needed adjustment for development. It uses zone system theory originally invented by Ansel Adams and Fred Archer. First decide zone of your shadows and measure the shadows. Then device highlight zone and measure the highlights. Measure these with the film ISO you are going to use. You also need to decide shutter speed in beforehand. The app calculates exposure aperture for you and also tells if you need to shorten (N+..) or expand (N-..) your development time. You will get best results with a spot light meter but mobile apps will probably do fine.
Screenshots
Verdict
The clearest difference is rating: PhotoTropedelic at 3.7 against Zone Tool's 2.8. PhotoTropedelic also leads on update cadence (every 7 months vs every 38 months) and ratings volume (25 vs 6). Zone Tool's advantage is in-app purchases (none vs 1) and review sentiment (100% vs 76%). On ads 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
PhotoTropedelic costs $2.99 and Zone Tool $0.99 up front. PhotoTropedelic sells 1 one-off in-app purchase. Zone Tool asks for nothing beyond the download.
PhotoTropedelic holds the better App Store score, 3.7 against 2.8. Both are backed by a comparable volume of ratings — 25 and 6 respectively. Written reviews complicate that: 76% of PhotoTropedelic's written reviews are positive against 100% of Zone Tool's, so the app with the better star average is not the one people write more warmly about.
PhotoTropedelic ships an update every 7 months, Zone Tool every 38 months. Both last shipped on October 27, 2026.
| Parameter | PhotoTropedelic | Zone Tool |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 3.7 (25 ratings) — better | 2.8 (6 ratings) |
| Positive reviews | 76.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 25 — better | 6 |
| Update frequency | Every 7 months — better | Every 38 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 9.0 — better | 12.2 |
| Further details — not scored | ||
| Size | 35 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Larry Weinberg | Jouni Erola |
Customer experience
PhotoTropedelic
Zone Tool
Bugs and requests
PhotoTropedelic
Reported bugs
10 issues- App crashes on iOS 11 and later versions
- Photos won't load from library
- White screen when accessing Albums or Photos
- App won't open or shows blank screen
- Custom color settings reset or don't save properly
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- In-app purchase for custom colors fails to load
- App crashes when changing device orientation
- Crashes after processing 5-6 photos
- Incompatible with older iPad models
- App becomes unstable after iOS updates
Requested features
19 requests- Update for iOS 11+ compatibility
- Ability to select/mask specific image areas
- Control over ray emanation point
- Repositionable stars and circles
- Blending function to soften psychedelic effect
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- Preview before rendering
- Option to disable auto-save or choose which images to save
- Higher output resolution
- Ability to stop processing at specific color stages
- Desktop/Mac version
- Direct social media upload (Facebook/Twitter)
- Restore to default settings option
- Control over background/transparent color selection
- Darken function in addition to contrast
- Thumbnail gallery browsing
- GIF animation capability
- More art style options
- Adjustable line thickness
- Ability to eliminate black outlines
Zone Tool
Not enough reviews yet to summarise bugs or requests.
In-app purchases
PhotoTropedelic
- Custom Color Palette Editing$0.99
Zone Tool
No in-app purchases
Questions
Is PhotoTropedelic free?
Is Zone Tool free?
Which has better reviews, PhotoTropedelic or Zone Tool?
Do PhotoTropedelic or Zone Tool have ads?
Which is updated more often, PhotoTropedelic or Zone Tool?
Other comparisons
