Comparison

Stack vs Image Stack

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

Head to head
About

Stack

Effortlessly create professional before-and-after photo and video comparisons. Advanced on-device technology automatically aligns your images, perfect for showcasing transformations in fitness, renovations, or projects. Export smooth, high-quality animations for social media.

Highlights
  • Automatic photo alignment
  • Manual adjustment options
  • Create before-and-after comparisons
  • Export animated videos
  • Match animation to music BPM
  • High FPS video export
  • On-device processing
Features
Read full description

Stack is the easiest way to create perfectly aligned before-and-after photos and videos. Powered by advanced on-device computer vision, Stack automatically aligns your photos with exceptional accuracy, helping you showcase transformations, progress, and projects without tedious manual adjustments. Whether you’re documenting a renovation, fitness journey, restoration, build project, or creative work, Stack makes your before-and-after comparisons look professional and effortless. Create engaging animations and export high-quality videos ready for social media. Fine-tune transition speed, match animations to any music BPM, and export at up to 120 FPS for incredibly smooth playback. Features: • Automatic photo alignment using advanced on-device computer vision • Precise manual adjustments when needed • Create stunning before-and-after comparisons in seconds • Export animated videos for social media • Match animation speed to any music BPM • Export at up to 120 FPS • Fast, private processing directly on your device • No watermarks on your work Stack is free to use. Upgrade to unlock unlimited automatic photo alignment and get the fastest, most accurate comparison workflow available. No recurring subscriptions. No monthly fees. No annual plans. Just a powerful before-and-after app built for creators, makers, professionals, and anyone who wants to showcase progress the right way.

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!

Screenshots

Stack4 screens
Image Stack4 screens

Verdict

The call

The clearest difference is iOS requirement: Image Stack at 18.0 against Stack's 26.0. On price, update cadence, 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. Stack sells 1 one-off in-app purchase and Image Stack sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 17, 2026 and September 29, 2026 respectively.

Scorecard1 real difference · 9 level
Stack versus Image Stack: the parameters behind the verdict, then further details
ParameterStackImage Stack
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings2 — better—
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS26.018.0 — better
Further details — not scored
Size12 MB13 MB
Age rating4+4+
DeveloperPavlo ChernovolenkoDaniel Witt

Customer experience

Stack

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

Image Stack

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

In-app purchases

1 purchases

Stack

One-time1
  • Stack Pro (Lifetime)$4.99
1 purchases

Image Stack

One-time1
  • Full Version$9.99

Questions

Is Stack free?
Stack is free to download, with in-app purchases available.
Is Image Stack free?
Image Stack is free to download, with in-app purchases available.
Do Stack or Image Stack have ads?
Neither Stack nor Image Stack shows ads.
Which is updated more often, Stack or Image Stack?
Stack ships an update monthly, and Image Stack monthly. Most recently, Stack was updated on September 17, 2026 and Image Stack on September 29, 2026.

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