Zlabel vs UnderMB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zlabel
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.
- Bluetooth/Wi-Fi printer connection
- Print label stickers
- PDF printing support
- Image printing support
- Simple interface
- Easy operation
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Zlabel is a free application that can be supported the printer connect with mobile devices via Bluetooth/WIFI to print label stickers. It can be supported PDF Print and Image Print. Simple interfaces and easy to operation.
UnderMB
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UnderMB helps you reduce photo, video, audio, and PDF file sizes to fit common upload limits. Processing happens on your device. WHAT IT DOES • Choose a target size: 500 KB, 1 MB, 2 MB, 5 MB, or a custom value • Compress images, videos, audio files, and PDFs • Preview results before saving or sharing • Built-in presets for email, visa forms, WhatsApp, and similar uploads • Optional metadata removal (EXIF/GPS, PDF info) • Batch queue for multiple files • Save to Files or share from the app PRIVACY UnderMB does not require an account. Files are processed locally and are not uploaded to UnderMB servers. GOOD FOR • Forms and portals with file size limits • Smaller email attachments • Chat apps with upload caps • Reducing file size before sharing
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Zlabel | UnderMB |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (38 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 15.4% of reviews | — |
| Number of ratings | 38 — better | 1 |
| Update frequency | Every 9 days — better | Every 11 days |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 18 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | 共海 王 | CEMRE SIMSEK |
Bugs and requests
Zlabel
Reported bugs
18 issues- 🐛 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)
Show 13 moreShow fewer
- 🐛 App freezes or closes unexpectedly
- 🐛 Gallery not opening to select images
- 🐛 Text alignment removed
- 🐛 Cropped PDF area prints small
- 🐛 App doesn't connect to printer
- 🐛 Printing fails without error
- 🐛 App force closes on iOS 17
- 🐛 Cannot delete previous jobs/files
- 🐛 App shows blank white screen
- 🐛 Printing command sent but nothing prints
- 🐛 Error in cropping PDFs
- 🐛 App closes after each print
- 🐛 Blurring barcode lines when printing images
Requested features
8 requests- 💡 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
Show 3 moreShow fewer
- 💡 Add Italian language option
- 💡 Allow multiple user connections
- 💡 Add watermark option for AWB
UnderMB
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Zlabel
No in-app purchases
UnderMB
No in-app purchases
