HDRI Prep vs VoxScan
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
HDRI Prep
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.
- 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
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Build a library of HDRI exposure brackets for your RICOH THETA V, Z1 or X, and fire them off on set in seconds. The THETA can shoot multi-exposure brackets, but setting them up in the official app is slow, and you can't save them to reuse later. HDRI Prep fixes that. Set up a bracket once, name it, file it under your show, and call it up whenever the lighting calls for it. BUILD BRACKETS THE WAY YOU THINK ⢠Choose 3 to 19 photos, 1 to 3 stops apart. No need to set each exposure by hand. ⢠Pick a center shutter speed, and the bracket spreads evenly above and below it. ⢠Set aperture, ISO and color temperature for the whole bracket at once. Choices are limited to what your camera can actually do. ORGANIZED FOR PRODUCTION ⢠Name brackets, group them by show, drag to reorder, and copy or move them between shows. ⢠Each bracket is tinted by its color temperature, so tungsten and daylight setups stand out at a glance. ON SET ⢠Live View, flat or as a 360° view you can drag around, to check the frame before you shoot. ⢠A shot counter and timer while the bracket runs, and Cancel if you need to stop. ⢠View the photos from that bracket the moment it finishes. ⢠Browse the camera's photos, inspect them full screen or in 360°, share them to Photos, Files or AirDrop, or delete them from the camera. ⢠Find nearby THETAs and join their Wi-Fi from the app. Cameras you've used are remembered. ⢠Adjust the camera's shutter volume and sleep delay. TRY IT WITHOUT A CAMERA Demo Mode loads sample 360° brackets so you can explore every feature before you plug in a THETA. Works on iPhone, iPad and iPhone Duo, and includes a built-in Manual. GOOD TO KNOW ⢠HDRI Prep connects over the camera's own Wi-Fi (the camera's access-point mode). ⢠Shutter volume and sleep delay are saved to the camera itself, so they stay set even when HDRI Prep isn't running. ⢠HDRI Prep focuses on bracketing. It isn't a replacement for the official THETA app, which works well alongside it. Built by a VFX artist for VFX artists. If "HDRI" and "THETA" mean something to you, this was made for you. HDRI Prep is not affiliated with or endorsed by RICOH. RICOH THETA is a trademark of Ricoh Company, Ltd. Site and Privacy Policy: https://squirrelfx.llc/hdri-prep.html
VoxScan
This app allows users to capture and export 3D models using LiDAR technology, with support for various file formats. It also enables USDZ import for creating voxel models, even on devices without LiDAR. Compatibility extends to Apple Vision Pro for experiencing creations.
- LiDAR 3D model capture
- Export in .vox, .ply, .usdz, .stl, .glTF, .obj
- USDZ import for voxel creation
- Apple Vision Pro compatibility
- iOS 17+ and LiDAR camera required for capture
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Key Features: Capture and Export Functionality: VoxScan seamlessly captures and exports your creations in various formats, including .vox, .ply, .usdz, .stl, .glTF, and .obj, offering versatility for your 3D modeling projects. USDZ Import Service: Explore new dimensions by importing USDZ 3D file formats, enabling Voxel Model creation even on iPhone models without LiDAR cameras. Apple Vision Pro Compatibility: VoxScan extends its support to Apple Vision Pro, supporting only functionality to experience the Voxel Model Creation feature. Capture Feature Requirements: To utilize the capture feature, iOS 17+ and an iPhone with a LiDAR camera are essential. Apple Vision Pro and Other iPhone Models(Without LiDAR Camera Support) Note: Please be aware that on Apple Vision Pro and other iPhone models without LiDAR camera support, only the input feature will be functional. Supported Input Format: The exclusive supported input format is USDZ. Particularly effective are 3D models created through object capture using Photogrammetry. However, please note that importing USDZ files containing complex 3D models, such as those with separated objects, excessively large or small mesh data, and animated objects, may result in display issues, including the possibility of rendering nothing in the space. Exercise caution when importing such files. Supported Export Formats: Export your creations in diverse file formats, including .vox, .ply, .usdz, .stl, .glTF, and .obj. Tested on: VoxScan has undergone successful testing on iPhone 12 Pro and 15 Pro models. MagicaVoxel Note: Please note that the model's color will be based on the default MagicaVoxel color palette, resulting in a different appearance compared to our app. Unlock the potential of 3D modeling with VoxScan ā Download now and bring your creations to life!
Screenshots
Verdict
The clearest difference is review sentiment: HDRI Prep at 100% against VoxScan's 0%. VoxScan's advantage is price (Free vs $9.99) and update cadence (every 5 weeks vs every 9 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
VoxScan is free to download; HDRI Prep costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
HDRI Prep ships an update every 9 months, VoxScan every 5 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | HDRI Prep | VoxScan |
|---|---|---|
| Price | $9.99 | Free ā better |
| Positive reviews | 100.0% of reviews ā better | 0.0% of reviews |
| Update frequency | Every 9 months | Every 5 weeks ā better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free ā better |
| Devices | iPhone, iPad | iPhone, Vision Pro |
| Requires iOS | 17.0 | 17.0 |
| Further details ā not scored | ||
| Size | 11 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Squirrel FX LLC | Yasuo Hasegawa |
Customer experience
HDRI Prep
VoxScan
In-app purchases
HDRI Prep
No in-app purchases
VoxScan
No in-app purchases









