# Zlabel vs UnderMB

The clearest difference is rating: UnderMB at 5.0 against Zlabel's 2.1. Zlabel's advantage is ads (none vs shown) and ratings volume (38 vs 1). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UnderMB holds the better App Store score, 5.0 against 2.1. That said, the two scores are not equally well evidenced: Zlabel has 38 ratings behind it against 1, so its average is the more settled of the two.

Zlabel ships an update every 9 days, UnderMB every 11 days. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Zlabel | UnderMB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (38 ratings)](https://appshunter.io/ios/app/zlabel/id1604499580/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/undermb-file-size-compressor/id6811049521/reviews)** |
| Number of ratings | **38** | 1 |
| Positive reviews | 15.4% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 11 days |
| Monetization | Free | — |
| Size | 18 MB | 9 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [共海 王](https://appshunter.io/developer/1130227631) | [CEMRE SIMSEK](https://appshunter.io/developer/6801148028) |

## What reviewers say

### Zlabel

[App page](https://appshunter.io/ios/app/zlabel/id1604499580)

This utility app connects to compatible printers via Bluetooth or Wi-Fi, enabling mobile printing of label stickers. It supports printing from PDF files and images with a straightforward interface for ease of use.

**Highlights:** Bluetooth/Wi-Fi printer connection, Print label stickers, PDF printing support, Image printing support, Simple interface, Easy operation

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use (sometimes)
- 🚀 Prints fast (when it works)
- ✨ Clear print quality (when it works)
- 👍 Good for shipping labels
- 👍 Seamless integration with eBay/Poshmark

**What reviewers complain about**

- 🐛 Frequent connection issues
- 🐛 App crashes often
- 🐛 Printing fails frequently
- 🐛 Blank labels printed
- 🐛 PDFs/images not printing

**Reported bugs**

- 🐛 App crashes when opening PDFs
- 🐛 Blank labels printing
- 🐛 PDFs and images not printing after updates
- 🐛 Small print size after updates
- 🐛 Connection issues (Bluetooth/Wi-Fi)

**Requested features**

- 💡 Option to add/select multiple PDFs at once
- 💡 Ability to delete past PDF files from list
- 💡 Sorting of PDF list by date/name
- 💡 Search function for print history/templates
- 💡 Bring back text alignment within text blocks


### UnderMB

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Zlabel free?

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

### Is UnderMB free?

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

### Which has better reviews, Zlabel or UnderMB?

UnderMB is rated higher. Zlabel averages 2.1 out of 5 from 38 ratings, while UnderMB averages 5.0 from 1 ratings.

### Do Zlabel or UnderMB have ads?

UnderMB shows ads; Zlabel does not.

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

Zlabel ships an update every 9 days, and UnderMB every 11 days. Most recently, Zlabel was updated on October 23, 2026 and UnderMB on October 29, 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.*