# GridArtImager vs rhodopsin

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.

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.

## The numbers

| Metric | GridArtImager | rhodopsin |
| --- | --- | --- |
| Price | **$1.99** | $9.99 |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/gridartimager/id1153162488/reviews) | **[5.0 (25 ratings)](https://appshunter.io/ios/app/rhodopsin/id6471383189/reviews)** |
| Number of ratings | 2 | **25** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#177** |
| Size | 48 MB | 293 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NOBORU IMAI](https://appshunter.io/developer/896071356) | [Christopher Barth](https://appshunter.io/developer/1715210913) |

## What reviewers say

### GridArtImager

[App page](https://appshunter.io/ios/app/gridartimager/id1153162488)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pattern Option | $0.99 | one-time |
| Conway's Game of Life | $0.99 | one-time |
| Vector Image Export | $2.99 | one-time |


### rhodopsin

[App page](https://appshunter.io/ios/app/rhodopsin/id6471383189)

**Currently charting:** #177 Top Paid · Photo & Video (US App Store)

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.

**Highlights:** Video source mixing, Three sequential effects, LFO and envelope control, MIDI parameter control, Live performance focused

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is GridArtImager free?

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

### Is rhodopsin free?

rhodopsin costs $9.99, with no in-app purchases.

### Which has better reviews, GridArtImager or rhodopsin?

rhodopsin is rated higher. GridArtImager averages 3.0 out of 5 from 2 ratings, while rhodopsin averages 5.0 from 25 ratings.

### Do GridArtImager or rhodopsin have ads?

Neither GridArtImager nor rhodopsin shows ads.

### Which is updated more often, GridArtImager or rhodopsin?

GridArtImager ships an update every 41 months, and rhodopsin every 2 months. Most recently, GridArtImager was updated on November 2, 2026 and rhodopsin on November 4, 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.*