Supported Features
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Dark Interface
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Differentiate Without Color Alone
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Sufficient Contrast
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Reduced Motion
One Sim
One eSIM. Zero Stress.
Only for iPhone
Free
iPhone
With onesim, you install your eSIM once and never again. Every time you buy a new data package, it’s instantly ready to use - no reinstallation, no QR codes, no roaming headaches.
Whether you’re exploring Europe, heading across the Americas, or venturing into Asia, onesim keeps you connected with reliable data in every country you visit.
Stay online for maps, messaging, and memories - all with a single data plan.
Why travelers love onesim:
• One eSIM - install once and you’re set
• One data package per region - Traveling to Europe? Purchase one data package and you’re covered wherever you go!
• Seamless coverage - stay online as you cross countries
• Fast 4G/5G data - perfect for maps, chat, and travel apps
Ratings & Reviews
This app hasn’t received enough ratings or reviews to display an overview.
We’ve made some under-the-hood improvements for a smoother experience.
The developer, Horizon Digital Ventures L.L.C., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- Usage Data
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Horizon Digital Ventures L.L.C.
- Size
- 34.8 MB
- Category
- Travel
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2025 Horizon Digital Ventures LLC