Comparison

Eagle Image Stacker vs Shutter Link

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

Head to head
About

Eagle Image Stacker

Astro stacking and RAW image processing toolkit for iPhone. Align, stack, and export high-quality results for star fields, galaxies, planets, and more. Features on-device processing for privacy and flexibility.

Highlights
  • RAW, DNG, ProRAW, JPEG, HEIF, TIFF support
  • Astro Mode for deep-sky objects
  • Planets Mode with ROI tracking
  • RAW converter and inspector
  • Calibration tools (dark, flat frames)
  • On-device processing
  • Export high-quality results
Read full description

Eagle Image Stacker is a local-first astronomy imaging toolkit for iPhone. Import or capture RAW, DNG, ProRAW, JPEG, HEIF, TIFF, and other supported image files, then align, calibrate, stack, inspect, and export high-quality results. Use Astro Mode for star fields, galaxies, nebulae, and deep-sky sequences. Use Planets Mode for Moon and planet workflows with ROI tracking and alignment tools. RAW Converter helps inspect and export camera files, while calibration tools support dark frames, flat fields, hot-pixel review, masks, and alignment analysis. The app is built for on-device processing. Your selected images and generated outputs remain local unless you choose to save, export, or share them through iOS. Some capture features depend on your iPhone hardware. RAW and Apple ProRAW availability varies by device. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Subscription Terms: https://sites.google.com/view/eis-subscription-terms/ Privacy Policy: https://sites.google.com/view/eagle-image-stacker-privacy2/

About

Shutter Link

Features
Read full description

ShutterLink turns your iPhone into a remote for the camera you already own, over Bluetooth. No Wi-Fi network to join, no hotspot that drops, no account to make. Pair once, and the camera is there when you pick the phone up. Works with Sony Alpha, Fujifilm X and GFX, and Canon EOS bodies that have Bluetooth remote control. A REMOTE YOU ARRANGE Add, move, resize and remove controls on a grid, the way you would in Control Center. Upright and sideways are kept separately, and every camera keeps its own layout. Shutter, half press, single shot, shoot on focus, 3s and 10s self timers, AF-ON, C1, video record, power zoom and focus drive, as far as the body allows. SEQUENCES A bulb timer, an intervalometer and focus bracketing, composed into one run, with an estimate of how long it will take before you start it. Exposure ramping gives every frame a different length across a run, for a timelapse shot into changing light. A Live Activity keeps the count on the Lock Screen and in the Dynamic Island while the phone is in your pocket. ON YOUR WRIST, AND EVERYWHERE ELSE An Apple Watch remote with four controls you choose per camera. Siri and Shortcuts for shutter, start and stop. A Control Center button for the shutter, one press from anywhere. MORE THAN ONE CAMERA Pair as many bodies as you like. They stay connected together, and the title on the remote decides which one it drives, so a sequence running on one carries on while you shoot with the other. GEOTAGGING AND THE SHOT LOG Feed the phone's position to the camera over the maker's own location service, and the camera writes GPS into its own files, including the frames you fire on the body that the app never sees. The shot log records when and where every frame the app triggered went off, and exports GPX for matching photos by capture time in Lightroom or Capture One. FREE TO CONNECT, PAY TO CONTROL Finding, pairing and connecting cost nothing, so you can watch the app talk to your camera before you spend anything. One purchase then unlocks the remote for every supported make, now and for the makes added later. No subscription, no account, no sign-in. WHAT BLUETOOTH CANNOT DO Bluetooth is a remote release, not a tether. There is no live view, no image preview or transfer, and no reading or setting ISO, aperture, shutter speed or white balance. What is on offer also varies by make: a Fujifilm gives the shutter, its half press and geotagging, and a Canon gives different things depending on which of its two Bluetooth modes you paired from. The app follows what your camera can actually do rather than what its badge says, lists that for you before you buy, and never draws a button the body will not answer. Not affiliated with, or endorsed by, Sony, Fujifilm or Canon. Product names are the trademarks of their owners.

Screenshots

Eagle Image Stacker4 screens
Shutter Link4 screens

Verdict

The call

The clearest difference is device support: Shutter Link at 3 against Eagle Image Stacker's 1. Eagle Image Stacker's advantage is iOS requirement (18.0 vs 26.0). On price, ads and in-app purchases 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. Eagle Image Stacker sells 3 in-app purchases, starting at $9.99 per month and Shutter Link sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences · 8 level
Eagle Image Stacker versus Shutter Link: the parameters behind the verdict, then further details
ParameterEagle Image StackerShutter Link
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequency—Fortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS18.0 — better26.0
Further details — not scored
Size31 MB21 MB
Age rating4+4+
DeveloperAL MUATASIM AL MAADIJonathan Underwood

In-app purchases

3 purchases

Eagle Image Stacker

Subscriptions2
  • Eagle Pro Monthly$9.991 Month
  • Eagle Pro Annual7 Days trial$40.991 Year
One-time1
  • Eagle Pro Lifetime$49.99
1 purchases

Shutter Link

One-time1
  • Bluetooth Remote$6.99

Questions

Is Eagle Image Stacker free?
Eagle Image Stacker is free to download, with in-app purchases available.
Is Shutter Link free?
Shutter Link is free to download, with in-app purchases available.
Do Eagle Image Stacker or Shutter Link have ads?
Neither Eagle Image Stacker nor Shutter Link shows ads.

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