# PQ Calc vs Green Screen Tracker by T6FV

The clearest difference is price: Green Screen Tracker by T6FV at Free against PQ Calc's $4.99. Green Screen Tracker by T6FV also leads on update cadence (every 3 weeks vs every 22 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Green Screen Tracker by T6FV is free to download; PQ Calc costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PQ Calc ships an update every 22 months, Green Screen Tracker by T6FV every 3 weeks. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PQ Calc | Green Screen Tracker by T6FV |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pq-calc/id1541419476/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 1 MB | 29 MB |
| Requires iOS | 14.2 | **14.0.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Avical](https://appshunter.io/developer/1534335247) | [T6FV](https://appshunter.io/developer/1837607553) |

## What reviewers say

### PQ Calc

[App page](https://appshunter.io/ios/app/pq-calc/id1541419476)

Easily convert luminance levels (nits) to digital values and vice versa using the SMPTE ST 2084 (PQ) electro-optical transfer function. Supports various bit depths and ranges for professional video workflows.

**Highlights:** Bi-directional conversion, Luminance (nit) to digital level, Digital level to luminance (nit), Supports Full, SMPTE, SDI-Full ranges, Calculations in float, percent, 8-16bit

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

**In-app purchases:** none


### Green Screen Tracker by T6FV

[App page](https://appshunter.io/ios/app/green-screen-tracker-by-t6fv/id6762498440)

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

**In-app purchases:** none


## Frequently asked questions

### Is PQ Calc free?

PQ Calc costs $4.99, with no in-app purchases.

### Is Green Screen Tracker by T6FV free?

Green Screen Tracker by T6FV is free to download, with no in-app purchases.

### Do PQ Calc or Green Screen Tracker by T6FV have ads?

Neither PQ Calc nor Green Screen Tracker by T6FV shows ads.

### Which is updated more often, PQ Calc or Green Screen Tracker by T6FV?

PQ Calc ships an update every 22 months, and Green Screen Tracker by T6FV every 3 weeks. Most recently, PQ Calc was updated on November 3, 2026 and Green Screen Tracker by T6FV 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.*