# AnyCompress vs UnderMB

The clearest difference is rating: UnderMB at 5.0 against AnyCompress's 3.0. UnderMB also leads on in-app purchases (none vs 1) and update cadence (every 11 days vs every 2 months). AnyCompress's advantage is ads (none vs shown) and iOS requirement (12.1 vs 15.0). On price, ratings volume and device support there is nothing between them.

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

UnderMB holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

AnyCompress ships an update every 2 months, UnderMB every 11 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AnyCompress | UnderMB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/anycompress-file-compressor/id6499078394/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/undermb-file-size-compressor/id6811049521/reviews)** |
| Number of ratings | **2** | 1 |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 11 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 76 MB | 9 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Huizhou Jiqu Technology Co., Ltd.](https://appshunter.io/developer/1308118506) | [CEMRE SIMSEK](https://appshunter.io/developer/6801148028) |

## What reviewers say

### AnyCompress

[App page](https://appshunter.io/ios/app/anycompress-file-compressor/id6499078394)

Easily reduce the size of various files like videos, images, and PDFs to save storage space and share them faster. Offers multiple compression modes and batch processing for efficiency.

**Highlights:** Multiple format compression, High compression ratio, Multiple compression modes, Batch compression, Preview function, Secure and reliable

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Life Membership | $4.99 | one-time |


### 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 AnyCompress free?

AnyCompress 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, AnyCompress or UnderMB?

UnderMB is rated higher. AnyCompress averages 3.0 out of 5 from 2 ratings, while UnderMB averages 5.0 from 1 ratings.

### Do AnyCompress or UnderMB have ads?

UnderMB shows ads; AnyCompress does not.

### Which is updated more often, AnyCompress or UnderMB?

AnyCompress ships an update every 2 months, and UnderMB every 11 days. Most recently, AnyCompress was updated on November 4, 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.*