Comparison

EOPAN vs HDReye

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

EOPAN

View panoramic images and compare multiple scenes side-by-side. Embed text, images, and web links within your photos for interactive viewing. Supports various import methods and offline access.

Highlights
  • Sphere image viewing
  • Gyroscope synchronization
  • Side-by-side image comparison
  • Embed text and images
  • Offline image storage
  • Import from 3D CAD
  • Share via apps
Read full description

EOPAN is a panorama image viewer for JPEG and EPA files. You can select different views of a scene to display side-by-side and show popup text and images (for EPA files). Good Design Award 2014 Best 100 Design for the Future Award [Main Features] - EOPAN displays sphere images and pictures taken by an omnidirectional camera (for example, RICOH THETA m15, S, SC1、SC2 and THETA V) - Move your iPad or iPhone and the screen is smoothly synchronized using the gyro, or drag the screen to rotate the view - Imports images from 3D CAD “Walk in home” - Open multiple JPEG files as a ZIP file then change selection while viewing - Images sharing with apps supported by the sharing function - Store images locally to view off-line - EOPAN can display two images side-by-side, so you can compare before-and-after plans or different proposals - Create EPA files with “EOPAN Cloud”. You can embed links to web pages and YouTube - using embedding code from EOPAN cloud, you can paste your spherical images into WordPress etc. [Supported file types] JPG (sphere type) ZIP (with sphere type JPG files) EPA (created by EOPAN Cloud Portal) [How to import files] JPEG 1. Direct import of spherical camera image via Wi-Fi 2. Tap Camera Roll icon and choose image 3. Transfer between devices running EOPAN via Wi-Fi P2P 4. Add via Mac OS Finder or Windows iTunes 5. Download from "EOPAN cloud" - ZIP 1. Transfer between devices running EOPAN via Wi-Fi P2P 2. Add via Mac OS Finder or Windows iTunes 3. Download from "EOPAN cloud" - EPA 1. Transfer between devices running EOPAN via Wi-Fi P2P 2. Add via Mac OS Finder or Windows iTunes 3. Download from "EOPAN cloud" Flick the screen downwards to update the image list.

About

HDReye

Create custom 360° HDRi images for realistic 3D lighting and compositing directly from your phone. Capture bracketed panoramas and generate 32-bit EXR files for seamless integration with 3D software and AR development.

Highlights
  • Create 360° HDRi images
  • Shoot bracketed multi-exposure panoramas
  • Generate 32-bit .EXR files
  • Realistic 3D lighting and compositing
  • Image-based lighting solution
  • Access to crowdsourced HDRi collection
Features
Read full description

Finally, an app to shoot 360° HDRis with your phone. HDReye is the first and only iOS app for creating custom 360° HDRi images for realistic 3D lighting and compositing. Just select your desired dynamic range, follow the prompts to shoot a bracketed multi-exposure panorama of your location, and HDReye will stitch and generate a 32-bit (.EXR format) HDRi of your location. HDReye is an essential app for combining 3D animation realistically with footage or capturing lightmaps of any location. What used to require an expensive 360° camera or chrome ball light probe, now can be done conveniently on your phone with HDReye. Whether you are an independent 3D artist, VFX studio, AR developer, NFT artist, content creator, or just a hobbyist - HDReye is here to make your workflow simpler and renders more realistic. HDReye is your image-based lighting solution. Compatible with all 3D packages and render engines including Cinema 4D, Blender, Houdini, Maya, 3D Studio Max, Adobe After Effects, Element 3D, OTOY Octane Render, Redshift, V-ray, Arnold, Unreal Engine, Unity, Spark AR, and more. HDReye users also have access to the largest crowdsourced collection of HDRi images in the world. HDReye also works well for capturing 360° panoramas similar to the Google Street View app. Terms of Use: http://hdreye.app/terms/ Privacy Policy: http://hdreye.app/privacy/

Screenshots

EOPAN4 screens
HDReye4 screens

Verdict

The call

The clearest difference is review sentiment: EOPAN at 80% against HDReye's 29%. EOPAN also leads on monetization model (free vs free with in-app purchases) and iOS requirement (12.0 vs 15.0). HDReye's advantage is update cadence (monthly vs every 4 months). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. EOPAN sells 10 one-off in-app purchases and HDReye sells 4 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

EOPAN ships an update every 4 months, HDReye monthly. The most recent releases landed on June 1, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 6 level
EOPAN versus HDReye: the parameters behind the verdict, then further details
ParameterEOPANHDReye
PriceFreeFree
Rating—4.5 (770 ratings) — better
Positive reviews80.0% of reviews — better29.0% of reviews
Number of ratings—770 — better
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size58 MB90 MB
Age rating4+4+
DeveloperEOGLANZHDReye Technologies Inc.

Customer experience

EOPAN

Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

HDReye

All ratings770 ratings
Positive88.3%
Neutral2.7%
Negative9.0%
Written reviews186 reviews
Positive29.0%
Neutral5.4%
Negative65.6%

Bugs and requests

EOPAN

Not enough reviews yet to summarise bugs or requests.

HDReye

Reported bugs

3 issues
  • Account deletion issues
  • Stuck on processing/uploading
  • Disappearing credits

Requested features

4 requests
  • Free trial or preview option
  • Ability to stitch locally on device
  • One-time purchase option
  • Improved stitching algorithm

In-app purchases

10 purchases

EOPAN

One-time10
  • Download of the selected files$0.99
  • Copy the embed code$0.99
  • Hot spot settings$0.99
Show 7 more
  • WebGL text$0.99
  • WebGL display$1.99
  • Drag and Drop from the PC$1.99
  • EPA output$1.99
  • Set package$7.99
  • Server Strage10_1$7.99
  • Server Strage10_2$7.99
4 purchases

HDReye

Subscriptions3
  • HDReye Pro$6.991 Month
  • HDReye Pro3 Days trial$6.991 Month
  • HDReye Pro$39.991 Year
One-time1
  • Asset unlock$2.99

Questions

Is EOPAN free?
EOPAN is free to download, with in-app purchases available.
Is HDReye free?
HDReye is free to download, with in-app purchases available.
Do EOPAN or HDReye have ads?
Neither EOPAN nor HDReye shows ads.
Which is updated more often, EOPAN or HDReye?
EOPAN ships an update every 4 months, and HDReye monthly. Most recently, EOPAN was updated on June 1, 2026 and HDReye on September 22, 2026.

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