Comparison

OpenLabel vs Sentinel Line

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OpenLabel

This professional printing application offers a comprehensive solution for creating and printing labels. It supports various connection methods and thermal printer brands, with robust editing tools for barcodes, QR codes, PDFs, and images. Customize templates with text, images, and data for efficient and convenient label production.

Highlights
  • Multiple connection methods (Bluetooth, Wi-Fi, 4G)
  • Supports various thermal printer brands
  • Built-in barcode and QR code generation
  • PDF and image printing support
  • Customizable label templates
  • Variety of printing settings
Features
Read full description

OpenLabel is a professional printing application that provides you with the most comprehensive printing solution. It supports multiple connection methods, such as Bluetooth, Wi-Fi, 4G, etc., and can connect to various brands of thermal printers for printing, including Jancsinn, HPRT, NIIMBOT, GPRINTER, FUJITSU, etc., making your printing work more convenient and efficient. Unlike other printing applications, OpenLabel emphasizes label editing functionality, with built-in support for a variety of one-dimensional and two-dimensional codes, including Code 39, Code 128, UPC, EAN, QR code, etc., allowing you to generate high-quality barcodes and QR codes. Meanwhile, OpenLabel also supports PDF and image printing, allowing you to easily print the files and images you need. OpenLabel provides a wealth of printing settings options, including paper size, print orientation, print copies, etc., making your printing work more flexible. More importantly, OpenLabel provides a variety of printing templates and printing elements, including text, images, icons, dates, tables, Excel, etc. You can easily edit and customize label templates, save them locally or upload them to private templates, and print them anytime, anywhere. In addition, OpenLabel also provides a secure and reliable printing service, making your printing experience even more perfect. Download OpenLabel and experience the most professional label printing service, improve work efficiency, and make your life more convenient.

About

Sentinel Line

Features
Read full description

Designed for adults, Sentinel Line helps you manage your own app access for focus, digital wellbeing, privacy, and personal security. It provides an extra layer of protection for sensitive apps and helps you stay focused by making selected apps available only in the places you choose. Create Safety Zones around places that matter to you. While you are inside a protected zone, your selected apps remain available. When you leave the zone, Sentinel Line automatically protects them. Safety Zones • Create zones around specific locations • Choose the radius of each zone • Give each zone a meaningful name • Edit zones whenever you need App Protection • Select the apps you want to protect • Protection is automatically applied when you leave a zone • Protection is automatically removed when you return • Multiple zones can work together Sentinel Line uses Apple's Family Controls and location technologies to provide location-based app protection. Your zones and configuration are stored on your device. Privacy & Location Access Sentinel Line uses your location to automatically protect your apps based on the Safety Zones you create. For automatic protection to work even when Sentinel Line is not open, Location Access must be set to “Always”. Sentinel Line uses your location only to determine whether you are inside or outside the Safety Zones you have configured. Your location data is not shared with third parties or used for advertising. You can change your location permission at any time in Settings → Privacy & Security → Location Services.

Screenshots

OpenLabel4 screens
Sentinel Line4 screens

Verdict

The call

The clearest difference is update cadence: Sentinel Line at every 4 days against OpenLabel's every 2 weeks. OpenLabel's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 26.1). On price, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

OpenLabel ships an update every 2 weeks, Sentinel Line every 4 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
OpenLabel versus Sentinel Line: the parameters behind the verdict, then further details
ParameterOpenLabelSentinel Line
PriceFreeFree
Rating4.6 (216 ratings) — better—
Positive reviews57.1% of reviews—
Number of ratings216 — better—
Update frequencyEvery 2 weeksEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better26.1
Further details — not scored
Size121 MB5 MB
Age rating4+4+
Developer厦门捷昕智能技术有限公司Frederico Cox

In-app purchases

None

OpenLabel

No in-app purchases

None

Sentinel Line

No in-app purchases

Questions

Is OpenLabel free?
OpenLabel is free to download, with no in-app purchases.
Is Sentinel Line free?
Sentinel Line is free to download, with no in-app purchases.
Do OpenLabel or Sentinel Line have ads?
Neither OpenLabel nor Sentinel Line shows ads.
Which is updated more often, OpenLabel or Sentinel Line?
OpenLabel ships an update every 2 weeks, and Sentinel Line every 4 days. Most recently, OpenLabel was updated on November 7, 2026 and Sentinel Line on October 31, 2026.

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