GridArtImager vs rhodopsin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GridArtImager
Transform your photos into unique mosaic art. Customize cell colors, edges, and patterns to create artistic images. Explore various fill and edge styles, including Conway's Game of Life simulation.
- Mosaic photo processing
- Customizable cell coloring
- Multiple edge patterns
- Various cell fill patterns
- Conway's Game of Life simulation
- Adjustable color vividness
- PNG, SVG, PDF export
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Photos will be mosaic processing. You can easily create artistic images by coloring each cells or its edges of the mosaic image, and drawing pattern like bricks or maze. Following edge patterns are available. ・Rectangle ・Circle ・Stripe (NEW) ・Border (NEW) ・Bricks* ・Maze* ・Amida* As cell fill pattern, ・Uniform ・Check ・Stripe ・Border ・Maze* ・Random* ・Game of Life* (NEW) can be selected. When "Game of Life" is selected, Conway's game of life can be simulated. (option) Eight patterns like "Glider" can be located. For colors of edge or cell, ・Original image color (vividness is adjustable) ・Specified color ・Gradation can be selected. As image export format, ・PNG ・SVG* ・PDF* are available. Note) * marked items are option. Note) All options can be tried with a sample photo.
rhodopsin
This app is a video synthesizer designed for live performances. It allows users to mix video sources and apply a series of three effects. Parameters for sources, mixers, and effects can be manipulated using LFOs, envelopes, and MIDI.
- Video source mixing
- Three sequential effects
- LFO and envelope control
- MIDI parameter control
- Live performance focused
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rhodopsin is a video synthesizer for live video performances. It feeds video sources into a mixer into three effects in series. Source, mixer and effect parameters can be controlled by LFOs, envelopes and MIDI.
Screenshots
Verdict
The clearest difference is review sentiment: rhodopsin at 100% against GridArtImager's 0%. rhodopsin also leads on rating (5.0 vs 3.0) and in-app purchases (none vs 3). GridArtImager's advantage is price ($1.99 vs $9.99) and iOS requirement (11.0 vs 15.0). On ads, monetization model 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
GridArtImager costs $1.99 and rhodopsin $9.99 up front. GridArtImager sells 3 one-off in-app purchases. rhodopsin asks for nothing beyond the download.
rhodopsin holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: rhodopsin has 25 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of GridArtImager's written reviews are positive against 100% of rhodopsin's.
GridArtImager ships an update every 41 months, rhodopsin every 2 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.
| Parameter | GridArtImager | rhodopsin |
|---|---|---|
| Price | $1.99 — better | $9.99 |
| Rating | 3.0 (2 ratings) | 5.0 (25 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 25 — better |
| Update frequency | Every 41 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Best chart rank | — | #177 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 48 MB | 293 MB |
| Age rating | 4+ | 4+ |
| Developer | NOBORU IMAI | Christopher Barth |
Customer experience
GridArtImager
rhodopsin
In-app purchases
GridArtImager
- Pattern Option$0.99
- Conway's Game of Life$0.99
- Vector Image Export$2.99
rhodopsin
No in-app purchases
