# HDRI Studio — 360° HDRI capture, 32-bit .exr

> 360° HDRI capture, 32-bit .exr (iPhone/iPad app by Gianluca Gatto.)

- Source: https://appshunter.io/ios/app/hdri-studio/id6789729995 (this page in markdown: same URL + `.md`)
- Developer: [Gianluca Gatto](https://appshunter.io/developer/6789729997)
- Category: Photo & Video, Graphics & Design
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: English
- Released: 2026-07-23
- Data updated: 2026-09-08
- User reviews in markdown: https://appshunter.io/ios/app/hdri-studio/id6789729995/reviews.md

## What is HDRI Studio?

Turn the light around you into a relative scene-linear, 32-bit OpenEXR (.exr) environment map for image-based lighting, realistic reflections, VFX, archviz, and product rendering.

HDRI Studio guides your iPhone through 26 positions around a full sphere and automatically captures RAW exposure brackets when you are aimed and steady. Hosted processing merges the brackets, corrects the ultra-wide lens, and stitches a 360° equirectangular panorama. Save the finished .exr to Files or export it for use in any 3D or compositing tool that supports OpenEXR. No chrome ball, dedicated panorama camera, or capture rig is required.

OUTPUT YOU CAN USE
• RGB, 32-bit floating-point OpenEXR (.exr)
• Exact 2:1 equirectangular 360° panorama
• PIZ compression with linear Rec.709/D65 color metadata
• 4K (4096 × 2048), with 8K (8192 × 4096) where available
• Standard float channels for environment and world textures

CAPTURE WITH CONFIDENCE
• Guided 26-point coverage, including zenith and nadir
• Configurable RAW exposure brackets and dynamic range
• Automatic capture only when aimed and steady
• Locked focus and white balance across the sphere
• Lens calibration and measured device pose for stitching

PREVIEW, INSPECT, EXPORT
• Explore results in a swipe- and gyro-controlled 360° viewer
• Adjust preview exposure from −4 to +6 EV without changing the EXR
• Inspect dimensions, channels, compression, file size, peak and mean radiance, and contrast EV
• Open compatible .exr files from Files and inspect them in your Library
• Reprocess a saved capture at another available resolution
• Export the complete original RAW bracket set plus capture metadata with Pro

FOR REAL 3D WORKFLOWS
Import the .exr as an environment or world texture for:
• Image-based lighting and realistic reflections
• Look development and rendering
• VFX and compositing
• Architecture and product visualization

Use it in Blender, Unreal Engine, Nuke, Houdini, Cinema 4D, Maya, and other OpenEXR-compatible tools. Your captures remain yours to use in personal or commercial projects.

NO ACCOUNT REQUIRED
Capture, Library access, previews, and downloaded EXRs do not require a subscription. Two starter render credits are included. Additional hosted renders use one-time render credits or Pro. 4K uses one credit; 8K uses four. Failed or cancelled renders return reserved credits.

Processing requires an internet connection. Captures and downloaded EXRs remain on your iPhone until you delete them. Temporary hosted results are retained privately for up to 7 days so interrupted downloads can resume.

REQUIREMENTS
• iOS 17 or later
• An iPhone with a RAW-capable ultra-wide camera
• Internet connection for processing

Privacy Policy: https://hdristudio.app/privacy
Terms of Use: https://hdristudio.app/terms
Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro | $19.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 8K Render Credit | $7.99 | one-time |
| 4K Render Credit | $2.99 | one-time |



## Version history (last 5 releases)

### 1.0.6 — 2026-08-28

This update improves upload reliability and credit safety. Accepted renders keep progressing when you navigate away or the app moves to the background, completion waits for final credit settlement, and retries stay blocked until a failed or cancelled render has safely returned its reserved credits.

### 1.0.5 — 2026-08-21

This update improves purchase, reprocessing, and camera compatibility. Credit status stays accurate while connectivity changes, reprocessing waits for a verified balance instead of showing a false paywall, and unusable lens calibration data no longer blocks otherwise valid captures.

### 1.0.4 — 2026-08-11

This update improves purchase and library reliability. Subscription status now reflects renewals and expirations more accurately, iCloud restore continues when an individual panorama needs another sync, and processing availability refreshes when you return to the app. Restoring purchases is also more resilient.

### 1.0.3 — 2026-08-09

This update improves upload reliability and status feedback:
- The upload screen now clearly says when you need to keep the app open, and when it is safe to leave.
- Server availability checks are more patient, so the app no longer briefly reports the processing server as offline.
- Purchases are more resilient: a temporary App Store hiccup no longer blocks the payment sheet, and a purchase is only confirmed once it is fully applied.

### 1.0.2 — 2026-08-02

This update adds:
- Pro export for a representative 26-file RAW/DNG source set.
- Retake recommendations when movement is detected during a bracket.
- A simpler capture setup and clearer processing states.
- More reliable StoreKit price loading, purchases, and credit recovery.

## Related topics

[hdri studio](https://appshunter.io/ios/topics/hdri-studio) · [hdri](https://appshunter.io/ios/topics/hdri) · [hdri prep](https://appshunter.io/ios/topics/hdri-prep)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-08.*