About this app
Get mobile data in 200+ countries — in 60 seconds. No SIM swap. No roaming charges. Buy a plan, scan the QR code, and you're online on a local network the moment you land. No airport kiosks. No tiny SIMs. No surprise bill when you get home. WHAT YOU GET WITH SIMDAY ◆ One-tap activation. Scan the QR, tap install, connect — in 60 seconds. ◆ 190+ countries covered. From Tokyo to Lisbon to São Paulo, buy data that works on local networks the moment you land. ◆ Unlimited data plans. Stream, map, video-call, and post without watching the counter. ◆ Phone number included. Get a number with eligible plans so you can receive calls and texts while abroad. ◆ 24/7 live support. Real humans, not chatbots. Help whenever, wherever. ◆ Plan flexibility. Pay-per-GB, regional bundles, or unlimited — pick what fits your trip. HOW IT WORKS 1. Open Simday and pick your destination. 2. Choose a plan that fits your trip. 3. Install your eSIM with one tap. 4. Land, toggle on, and you're connected. WHO SIMDAY IS FOR - Vacationers who want to skip roaming charges - Business travelers hopping between countries on one trip - Digital nomads working from anywhere - Students studying abroad - Anyone who's ever hunted for a SIM kiosk at 2 AM DEVICE COMPATIBILITY Simday works on eSIM-compatible phones. Not sure if your phone supports eSIM? Tap "Check my device" in the app. It takes 5 seconds. WHAT'S AN eSIM? An eSIM is a digital SIM card built into your phone. No physical card to swap. No mailing. No waiting. You download your plan, and your phone connects to a local network wherever you are. SUPPORT Questions before you travel? Problems while you're abroad? Our support team answers 24/7 inside the app. Real people, real answers, any time zone. Download Simday, pick your destination, and get online in 200+ countries before your plane lands. ABOUT SIMDAY Simday is developed and operated by Vast Travel LLC.
Latest release
What’s New
Thank you for choosing Simday! We’re excited to present our latest update, packed with bug fixes and user interface enhancements to provide an even better experience.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 1, 2026 · 1:54 PM Free
Screenshots
