# tcCalc vs PQ Calc

The clearest difference is update cadence: tcCalc at every 3 months against PQ Calc's every 22 months. tcCalc also leads on ratings volume (76 vs 1) and price ($1.99 vs $4.99). PQ Calc's advantage is rating (5.0 vs 4.7) and iOS requirement (14.2 vs 18.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

tcCalc costs $1.99 and PQ Calc $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PQ Calc holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: tcCalc has 76 ratings behind it against 1, so its average is the more settled of the two.

tcCalc ships an update every 3 months, PQ Calc every 22 months. The most recent releases landed on October 18, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | tcCalc | PQ Calc |
| --- | --- | --- |
| Price | **$1.99** | $4.99 |
| Rating | [4.7 (76 ratings)](https://appshunter.io/ios/app/tccalc-timecode-and-frame-calc/id1144759699/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pq-calc/id1541419476/reviews)** |
| Number of ratings | **76** | 1 |
| Positive reviews | 63.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 22 months |
| Monetization | Paid | Paid |
| Size | 1 MB | 1 MB |
| Requires iOS | 18.0 | **14.2** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RYUICHIROU SHIMONO](https://appshunter.io/developer/696880855) | [Avical](https://appshunter.io/developer/1534335247) |

## What reviewers say

### tcCalc

[App page](https://appshunter.io/ios/app/tccalc-timecode-and-frame-calc/id1144759699)

This calculator specializes in timecode and frame-based calculations, offering a familiar interface for quick conversions and duration calculations. It supports multiple frame rates and allows for easy copying and pasting of results.

**Highlights:** Timecode and frame calculations, Convert between timecode and frames, Supports multiple frame rates, Automatic value adjustment, Copy and paste functionality, Memory function, Calculation history

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is tcCalc free?

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

### Is PQ Calc free?

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

### Which has better reviews, tcCalc or PQ Calc?

PQ Calc is rated higher. tcCalc averages 4.7 out of 5 from 76 ratings, while PQ Calc averages 5.0 from 1 ratings.

### Do tcCalc or PQ Calc have ads?

Neither tcCalc nor PQ Calc shows ads.

### Which is updated more often, tcCalc or PQ Calc?

tcCalc ships an update every 3 months, and PQ Calc every 22 months. Most recently, tcCalc was updated on October 18, 2026 and PQ Calc on October 9, 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.*