# ChromaCalc vs GhostOSC

The clearest difference is in-app purchases: GhostOSC at none against ChromaCalc's 2. GhostOSC also leads on update cadence (every 2 weeks vs every 8 months). ChromaCalc's advantage is iOS requirement (12.0 vs 18.2). On price, ads and device support there is nothing between them.

Both are free to download. ChromaCalc sells 2 in-app purchases, starting at $9.99 per month. GhostOSC asks for nothing beyond the download.

ChromaCalc ships an update every 8 months, GhostOSC every 2 weeks. The most recent releases landed on September 29, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | ChromaCalc | GhostOSC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (14 ratings)](https://appshunter.io/ios/app/chromacalc/id1599969698/reviews)** | — |
| Number of ratings | **14** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 4 MB |
| Requires iOS | **12.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chromatic Applications LLC](https://appshunter.io/developer/1599969700) | [Electric Eye AB](https://appshunter.io/developer/1799563919) |

## What reviewers say

### ChromaCalc

[App page](https://appshunter.io/ios/app/chromacalc/id1599969698)

This tool helps cinematographers match and find equivalent colors for LED lighting fixtures. It uses spectral data from real instruments to achieve desired color intentions with various lighting and camera settings.

**Highlights:** Match LED lighting fixtures, Find equivalent light colors, Use spectral data, Configure lighting instruments, Adjust camera settings, Achieve color intent

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $9.99 | per month |
| Yearly Subscription | $99.99 | per year |


### GhostOSC

[App page](https://appshunter.io/ios/app/ghostosc/id6753625323)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ChromaCalc free?

ChromaCalc is free to download, with in-app purchases available.

### Is GhostOSC free?

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

### Do ChromaCalc or GhostOSC have ads?

Neither ChromaCalc nor GhostOSC shows ads.

### Which is updated more often, ChromaCalc or GhostOSC?

ChromaCalc ships an update every 8 months, and GhostOSC every 2 weeks. Most recently, ChromaCalc was updated on September 29, 2026 and GhostOSC on October 17, 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.*