# Photo Compress & Image Resize vs UnderMB

The clearest difference is in-app purchases: UnderMB at none against Photo Compress & Image Resize's 2. UnderMB also leads on update cadence (every 11 days vs monthly). Photo Compress & Image Resize's advantage is ads (none vs shown) and ratings volume (7 vs 1). On price, rating, device support and iOS requirement there is nothing between them.

Both are free to download. Photo Compress & Image Resize sells 2 in-app purchases, starting at $6.99 per 7 days. UnderMB asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Photo Compress & Image Resize against 5.0 for UnderMB. That said, the two scores are not equally well evidenced: Photo Compress & Image Resize has 7 ratings behind it against 1, so its average is the more settled of the two.

Photo Compress & Image Resize ships an update monthly, UnderMB every 11 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Photo Compress & Image Resize | UnderMB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (7 ratings)](https://appshunter.io/ios/app/photo-compress-and-image-resize/id6787896210/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/undermb-file-size-compressor/id6811049521/reviews)** |
| Number of ratings | **7** | 1 |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 29 MB | 9 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jackie Martinez](https://appshunter.io/developer/6787896212) | [CEMRE SIMSEK](https://appshunter.io/developer/6801148028) |

## What reviewers say

### Photo Compress & Image Resize

[App page](https://appshunter.io/ios/app/photo-compress-and-image-resize/id6787896210)

Easily reduce image file sizes to save storage and facilitate sharing. This tool offers smart compression, batch processing, format conversion, and resizing capabilities to optimize your photos for various needs.

**Highlights:** Smart image compression, Batch compression, Format conversion, Image resizing, Image cropping, HD save

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Membership | $6.99 | per 7 days |
| Premium Membership | $14.99 | per month |


### UnderMB

[App page](https://appshunter.io/ios/app/undermb-file-size-compressor/id6811049521)

Reduce the size of photos, videos, audio, and PDFs on your device. Select a target file size or use presets for common uploads like email or chat apps. Preview your compressed files before saving or sharing, with optional metadata removal.

**Highlights:** Compress images, videos, audio, and PDFs, Choose target file size (KB/MB), Built-in presets for uploads, Preview before saving, Optional metadata removal, Batch processing

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

**In-app purchases:** none


## Frequently asked questions

### Is Photo Compress & Image Resize free?

Photo Compress & Image Resize is free to download, with in-app purchases available.

### Is UnderMB free?

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

### Which has better reviews, Photo Compress & Image Resize or UnderMB?

UnderMB is rated higher. Photo Compress & Image Resize averages 4.9 out of 5 from 7 ratings, while UnderMB averages 5.0 from 1 ratings.

### Do Photo Compress & Image Resize or UnderMB have ads?

UnderMB shows ads; Photo Compress & Image Resize does not.

### Which is updated more often, Photo Compress & Image Resize or UnderMB?

Photo Compress & Image Resize ships an update monthly, and UnderMB every 11 days. Most recently, Photo Compress & Image Resize was updated on October 31, 2026 and UnderMB on October 31, 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.*