# neoCatalog vs rhodopsin

The clearest difference is price: neoCatalog at Free against rhodopsin's $9.99. neoCatalog also leads on iOS requirement (9.0 vs 15.0). rhodopsin's advantage is chart position (#199 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

neoCatalog is free to download; rhodopsin costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

neoCatalog ships an update every 3 months, rhodopsin every 2 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | neoCatalog | rhodopsin |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | — | **[5.0 (25 ratings)](https://appshunter.io/ios/app/rhodopsin/id6471383189/reviews)** |
| Number of ratings | — | **25** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | — | Paid |
| Best chart rank | — | **#199** |
| Size | 60 MB | 293 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Inedit Software SL](https://appshunter.io/developer/644161065) | [Christopher Barth](https://appshunter.io/developer/1715210913) |

## What reviewers say

### neoCatalog

[App page](https://appshunter.io/ios/app/neocatalog/id644161062)

**Features:** macOS Compatibility

**In-app purchases:** none


### rhodopsin

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

**Currently charting:** #199 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 neoCatalog free?

neoCatalog is free to download, with no in-app purchases.

### Is rhodopsin free?

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

### Do neoCatalog or rhodopsin have ads?

Neither neoCatalog nor rhodopsin shows ads.

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

neoCatalog ships an update every 3 months, and rhodopsin every 2 months. Most recently, neoCatalog was updated on October 26, 2026 and rhodopsin on October 25, 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.*