Comparison

AI CometStack vs Shutter Link

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

Head to head
About

AI CometStack

Features
Read full description

AI CometStack is a breakthrough comet alignment app designed specifically for mobile astrophotography workflows. Overcome the long-standing tradeoff of comet movement during long imaging sessions. Traditionally, you had to choose between sharp stars (streaked comet) or a sharp comet (trailed stars). AI CometStack solves this by eliminating complex desktop compositing and advanced scripting. Core Features Motion-Aware Stacking: Aligns the comet nucleus across time while preserving star geometry. Two-Path Automation: Integrates stars and comets separately, then blends them on-device. Batch Processing: Handles full-night capture sets with uniform parameters. Pro Format Support: Works natively with FITS, RAW, TIFF, PNG, and JPEG files. Mobile-First Flow: Real-time previews and guided steps built for iOS deep-sky sessions. Simple Workflow Import your exposure frames (or use the included sample files). Let the app automatically track and model comet motion. Validate and adjust the seamless background blend in real time. Export gallery-grade, press-ready images instantly from the field. Support & Feedback Questions, feedback, or need help? Contact us directly at ustransit74@gmail.com Privacy policy and term of use (EULA) is at https://deepskycolor.blogspot.com/2018/12/privacy-policy-for-deep-sky-color-app.html

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

AI CometStack2 screens
Shutter Link4 screens

Verdict

The call

The clearest difference is iOS requirement: AI CometStack at 17.0 against Shutter Link's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. AI CometStack sells 1 in-app purchase, starting at $9.99 per year and Shutter Link sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference Β· 5 level
AI CometStack versus Shutter Link: the parameters behind the verdict, then further details
ParameterAI CometStackShutter Link
PriceFreeFree
Update frequencyβ€”Fortnightly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad, Apple Watch β€” better
Requires iOS17.0 β€” better26.0
Further details β€” not scored
Size105 MB21 MB
Age rating4+4+
Developeryong chong lohJonathan Underwood

In-app purchases

1 purchases

AI CometStack

Subscriptions1
  • Yearly Subscription$9.991 Year
1 purchases

Shutter Link

One-time1
  • Bluetooth Remote$6.99

Questions

Is AI CometStack free?
AI CometStack 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 AI CometStack or Shutter Link have ads?
Neither AI CometStack nor Shutter Link shows ads.

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