# Stack vs EchoSnap

The clearest difference is in-app purchases: EchoSnap at none against Stack's 1. EchoSnap also leads on iOS requirement (17.6 vs 26.0). Stack's advantage is update cadence (monthly vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Stack sells 1 one-off in-app purchase. EchoSnap asks for nothing beyond the download.

Stack ships an update monthly, EchoSnap every 4 months. The most recent releases landed on October 21, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Stack | EchoSnap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/stack-before-and-after-photos/id1095740881/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 12 MB | 8 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pavlo Chernovolenko](https://appshunter.io/developer/858517820) | [Yuang Chen](https://appshunter.io/developer/1807350090) |

## What reviewers say

### Stack

[App page](https://appshunter.io/ios/app/stack-before-and-after-photos/id1095740881)

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:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stack Pro (Lifetime) | $4.99 | one-time |


### EchoSnap

[App page](https://appshunter.io/ios/app/echosnap/id6744369120)

**In-app purchases:** none


## Frequently asked questions

### Is Stack free?

Stack is free to download, with in-app purchases available.

### Is EchoSnap free?

EchoSnap is free to download, with no in-app purchases.

### Do Stack or EchoSnap have ads?

Neither Stack nor EchoSnap shows ads.

### Which is updated more often, Stack or EchoSnap?

Stack ships an update monthly, and EchoSnap every 4 months. Most recently, Stack was updated on October 21, 2026 and EchoSnap on October 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*