# RZ Timecode Calculator vs HDRI Prep

The clearest difference is price: RZ Timecode Calculator at Free against HDRI Prep's $9.99. RZ Timecode Calculator also leads on iOS requirement (15.6 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

RZ Timecode Calculator is free to download; HDRI Prep costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RZ Timecode Calculator ships an update every 10 months, HDRI Prep every 9 months. The most recent releases landed on September 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | RZ Timecode Calculator | HDRI Prep |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/rz-timecode-calculator/id1444236587/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 9 months** |
| Monetization | **Free** | Paid |
| Size | 1 MB | 11 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Robert L Zimmelman](https://appshunter.io/developer/954130860) | [Squirrel FX LLC](https://appshunter.io/developer/1557764202) |

## What reviewers say

### RZ Timecode Calculator

[App page](https://appshunter.io/ios/app/rz-timecode-calculator/id1444236587)

This tool assists with timecode calculations for video editing and animation. It's designed for field use when built-in editing software functions are not readily available. A simple and useful utility for creative professionals.

**Highlights:** Timecode calculations, Video editing assistance, Animation support, Field use utility, Simple interface

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

**In-app purchases:** none


### HDRI Prep

[App page](https://appshunter.io/ios/app/hdri-prep-vfx-hdr-brackets/id1616103466)

This utility helps visual effects professionals create HDRI bracketing sets for RICOH THETA 360 cameras. It allows for quick definition, organization, and reuse of bracket settings, streamlining on-set workflows for HDR photography.

**Highlights:** Define custom bracket sets (3-19 photos, 1-3 stops apart), Set Aperture, ISO, and Color Temperature for all photos at once, Define Center Shutter Speed to extend exposures, Name, organize, and reorder brackets by show, Duplicate and move bracket sets between shows, View photos read directly from the camera, Quickly adjust camera speaker volume and auto-sleep time

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RZ Timecode Calculator free?

RZ Timecode Calculator is free to download, with no in-app purchases.

### Is HDRI Prep free?

HDRI Prep costs $9.99, with no in-app purchases.

### Do RZ Timecode Calculator or HDRI Prep have ads?

Neither RZ Timecode Calculator nor HDRI Prep shows ads.

### Which is updated more often, RZ Timecode Calculator or HDRI Prep?

RZ Timecode Calculator ships an update every 10 months, and HDRI Prep every 9 months. Most recently, RZ Timecode Calculator was updated on September 16, 2026 and HDRI Prep on October 24, 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.*