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MergeHDR

MergeHDR finds exposure-bracketed photos in a library and merges them into HDR images after the user approves.

Place
#7 of 21
Score
6.7
MergeHDR's website

What MergeHDR is

MergeHDR finds exposure-bracketed photos in a library and merges them into HDR images after the user approves. It identifies groups of three, five, or seven frames by examining metadata such as capture time and exposure values. Before merging, users can choose alignment and one of four deghosting levels; tone-mapping presets can be changed afterward without repeating the merge. The app reads and writes through Apple Photos, and its App Store listing says it can connect to an FTP server to merge brackets directly from a camera. Supported formats include Canon CR3, Sony ARW, Nikon NEF, Fujifilm RAF, Olympus ORF, Panasonic RW2, DNG, Apple ProRAW, HEIC, and JPEG. Merged images can be saved at full quality or compressed to HEIC. The maker says processing runs locally and fully offline, without an account, analytics, or uploads. Merging and previewing are free; the first 10 exports are free, capped at five per day. Unlimited saves cost $9.99/year or $19.99 once.

Good

  • Detects three-, five-, and seven-frame brackets.
  • Four deghosting levels and adjustable tone mapping.
  • Supports many camera RAW formats.
  • Processing works locally and offline.

Watch out

  • Requires iOS 18 or iPadOS 18 on mobile.
  • Mac requires macOS 15 or later.
  • Free exports are limited to five per day.
  • Unlimited saves cost $9.99/year or $19.99 once.

Who it suits

MergeHDR suits iPhone, iPad, and Mac users who want to identify and merge bracketed photos into HDR images. It may fit photographers working with supported RAW formats who want local, offline processing.

Verdict

MergeHDR combines bracket detection with controls for alignment, deghosting, and tone mapping. Free use includes merging and previews, but saving beyond the initial exports requires a paid option.

Plans and prices

From MergeHDR's own pricing page, checked 7 Oct 2026.

All about pricing
PlanPriceWhat it gives you
FreeFreeMerge and preview; first 10 exports free, up to 5 per day · Free to try
Yearly$9.99 a yearUnlimited saves; Universal Purchase for iPhone, iPad and Mac; Family Sharing · $9.99/year, auto-renews
Lifetime$19.99, paid onceUnlimited saves; Universal Purchase for iPhone, iPad and Mac; Family Sharing · $19.99 once

The facts

Each one read from MergeHDR's own pages, with the date it was checked.

What it does

Bracket detection
It identifies 3-, 5- and 7-frame brackets using photo metadata such as capture time and exposure values.checked 7 Oct 2026
Export
Merged images can be saved at full quality or compressed to HEIC using the on-device pipeline shared with RAWtoHEIC.checked 7 Oct 2026
Integration
MergeHDR reads and writes through Apple Photos, and its App Store listing says it can connect to an FTP server to merge brackets directly from a camera.checked 7 Oct 2026
Merge controls
Users can choose alignment, one of four deghosting levels, and tone-mapping presets that can be switched without re-merging.checked 7 Oct 2026
Offline use
The privacy page says processing works fully offline and does not require a network connection.checked 7 Oct 2026
Originals
The app does not delete originals by default; if users choose to remove them, they go to Photos Recently Deleted for 30 days.checked 7 Oct 2026
Privacy
The maker says photo detection and processing run locally, with no account, app analytics or uploads; its stated App Store privacy label is Data Not Collected.checked 7 Oct 2026
Purpose
MergeHDR detects exposure-bracketed photos in a library and merges them into HDR images after the user approves.checked 7 Oct 2026
Requirements
The download page requires iOS 18 or iPadOS 18 for iPhone and iPad, and macOS 15 or later for Mac.checked 7 Oct 2026
Support
The support page invites users to email sample bracket files and camera details to troubleshoot merges or request support for additional RAW formats.checked 7 Oct 2026
Supported formats
The download page lists Canon CR3, Sony ARW, Nikon NEF, Fujifilm RAF, Olympus ORF, Panasonic RW2, DNG, Apple ProRAW, HEIC and JPEG.checked 7 Oct 2026

Money

Free tier limit
The App Store listing says merging and previewing are free, with the first 10 exports free and a limit of 5 free exports per day.checked 7 Oct 2026

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