# WoolImager vs rhodopsin

The clearest difference is price: WoolImager at $1.99 against rhodopsin's $9.99. WoolImager also leads on iOS requirement (9.3 vs 15.0). rhodopsin's advantage is update cadence (every 2 months vs every 29 months) and ratings volume (25 vs 3). On rating, review sentiment, ads and in-app purchases there is nothing between them.

WoolImager costs $1.99 and rhodopsin $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for WoolImager against 5.0 for rhodopsin. That said, the two scores are not equally well evidenced: rhodopsin has 25 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

WoolImager ships an update every 29 months, rhodopsin every 2 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | WoolImager | rhodopsin |
| --- | --- | --- |
| Price | **$1.99** | $9.99 |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/woolimager/id1437348332/reviews) | [5.0 (25 ratings)](https://appshunter.io/ios/app/rhodopsin/id6471383189/reviews) |
| Number of ratings | 3 | **25** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 48 MB | 293 MB |
| Requires iOS | **9.3** | 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

### WoolImager

[App page](https://appshunter.io/ios/app/woolimager/id1437348332)

Transform your photos into unique wool-like line art. Observe the organic growth of lines and guide their direction with touch gestures to create painterly effects.

**Highlights:** Photo to wool-like line art conversion, Observe line growth process, Finger tracing to change growth direction, Create paint-like art effects, Supports iPhone and iPad

**Features:** Vision Pro support

**In-app purchases:** none


### rhodopsin

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

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 WoolImager free?

WoolImager costs $1.99, with no in-app purchases.

### Is rhodopsin free?

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

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

WoolImager and rhodopsin are both rated 5.0 out of 5 on the App Store, from 3 and 25 ratings respectively.

### Do WoolImager or rhodopsin have ads?

Neither WoolImager nor rhodopsin shows ads.

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

WoolImager ships an update every 29 months, and rhodopsin every 2 months. Most recently, WoolImager 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.*