# Image Stack vs BulkPix

The clearest difference is iOS requirement: BulkPix at 16.0 against Image Stack's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Image Stack sells 1 one-off in-app purchase and BulkPix sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Image Stack ships an update monthly, BulkPix every 3 weeks. The most recent releases landed on September 29, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Image Stack | BulkPix |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 13 MB | 30 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Witt](https://appshunter.io/developer/1438848391) | [智慧 李](https://appshunter.io/developer/1543528724) |

## What reviewers say

### Image Stack

[App page](https://appshunter.io/ios/app/image-stack/id6757393848)

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:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $9.99 | one-time |


### BulkPix

[App page](https://appshunter.io/ios/app/bulkpix-photo-compress-resize/id6781969234)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BulkPix Pro (Lifetime) | $3.99 | one-time |


## Frequently asked questions

### Is Image Stack free?

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

### Is BulkPix free?

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

### Do Image Stack or BulkPix have ads?

Neither Image Stack nor BulkPix shows ads.

### Which is updated more often, Image Stack or BulkPix?

Image Stack ships an update monthly, and BulkPix every 3 weeks. Most recently, Image Stack was updated on September 29, 2026 and BulkPix on October 11, 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.*