# tcCalc vs UltraSync Blue Slate

The clearest difference is review sentiment: tcCalc at 63% against UltraSync Blue Slate's 0%. tcCalc also leads on rating (4.7 vs 4.0) and update cadence (every 3 months vs every 13 months). UltraSync Blue Slate's advantage is price (Free vs $0.99) and iOS requirement (15.0 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

UltraSync Blue Slate is free to download; tcCalc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

tcCalc holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: tcCalc has 76 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 63% of tcCalc's written reviews are positive against 0% of UltraSync Blue Slate's.

tcCalc ships an update every 3 months, UltraSync Blue Slate every 13 months. The most recent releases landed on September 23, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | tcCalc | UltraSync Blue Slate |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.7 (76 ratings)](https://appshunter.io/ios/app/tccalc-timecode-and-frame-calc/id1144759699/reviews)** | [4.0 (3 ratings)](https://appshunter.io/ios/app/ultrasync-blue-slate/id1441461069/reviews) |
| Number of ratings | **76** | 3 |
| Positive reviews | **63.2% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 13 months |
| Monetization | Paid | **Free** |
| Size | 1 MB | 2 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RYUICHIROU SHIMONO](https://appshunter.io/developer/696880855) | [Atomos Ltd.](https://appshunter.io/developer/1468547360) |

## 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


### UltraSync Blue Slate

[App page](https://appshunter.io/ios/app/ultrasync-blue-slate/id1441461069)

This app functions as a digital slate for multicamera film and video production. It syncs sound and pictures or multiple video sources for efficient editing. Use it with compatible hardware to turn your device into a wireless digislate for professional shoots.

**Highlights:** Frame-accurate timecode transmission, Wireless Bluetooth sync, Full-screen slate display, Customizable edit titles, Supports regular and drop-frame timecode

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is tcCalc free?

tcCalc costs $0.99, with no in-app purchases.

### Is UltraSync Blue Slate free?

UltraSync Blue Slate is free to download, with no in-app purchases.

### Which has better reviews, tcCalc or UltraSync Blue Slate?

tcCalc is rated higher. tcCalc averages 4.7 out of 5 from 76 ratings, while UltraSync Blue Slate averages 4.0 from 3 ratings.

### Do tcCalc or UltraSync Blue Slate have ads?

Neither tcCalc nor UltraSync Blue Slate shows ads.

### Which is updated more often, tcCalc or UltraSync Blue Slate?

tcCalc ships an update every 3 months, and UltraSync Blue Slate every 13 months. Most recently, tcCalc was updated on September 23, 2026 and UltraSync Blue Slate on June 5, 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.*