Comparison

Image Stack vs Eagle Image Stacker

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

Head to head
About

Image Stack

This app streamlines image processing by allowing batch conversion, resizing, and renaming. Apply presets, add watermarks, and adjust quality settings with ease. It's designed for efficient handling of multiple images across devices.

Highlights
  • Batch image conversion
  • Apply multiple presets
  • Rename files
  • Resize images
  • Add overlays/watermarks
  • Adjust quality and metadata
  • iCloud preset sync
Features
Read full description

Image Stack converts images using presets to change formats, resize, rename, and more—whether you’re processing one image or thousands, everything is ready with just a few taps. KEY FEATURES • Batch convert images into modern formats • Apply one or more presets to avoid repetitive work • Rename files with prefixes, suffixes, or replacements • Resize images to match your requirements • Add overlays such as watermarks • Adjustable quality and metadata options • Drag-and-drop simplicity • Presets sync via iCloud for all your devices • Ultra-fast processing • Works on both macOS and iOS and iPadOS IDEAL FOR • Photographers organizing shoots • Designers exporting assets • Content creators preparing media • Anyone converting or renaming small or large image sets Image Stack is free to download and use. You can work with the app for as long as you like. To unlock the full experience and remove trial limits—such as the daily image limit—you can activate the full version with a one-time in-app purchase. The purchase is valid across all versions of Image Stack, including Mac, iPhone, and iPad. Is there any feature you are missing? Let me know!

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/

Screenshots

Image Stack4 screens
Eagle Image Stacker4 screens

Verdict

The call

The clearest difference is review sentiment: Image Stack at 100% against Eagle Image Stacker's 0%. Image Stack also leads on device support (3 vs 1). On price, ads, in-app purchases and monetization model 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. Image Stack sells 1 one-off in-app purchase and Eagle Image Stacker sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences · 8 level
Image Stack versus Eagle Image Stacker: the parameters behind the verdict, then further details
ParameterImage StackEagle Image Stacker
PriceFreeFree
Rating—1.0 (1 ratings) — better
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings—1 — better
Update frequencyMonthly—
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS18.018.0
Further details — not scored
Size13 MB31 MB
Age rating4+4+
DeveloperDaniel WittAL MUATASIM AL MAADI

Customer experience

Image Stack

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Eagle Image Stacker

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

Image Stack

One-time1
  • Full Version$9.99
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

Questions

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

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