RoamGauge — eSIM Data Planner

Estimate travel data by destination, trip length, and usage, then save your latest plan locally.

Not sure whether your trip needs 3 GB, 5 GB, or 10 GB? RoamGauge turns that question into four simple usage choices: maps and messaging, social media, short video, and video calls and hotspot use. Choose your destination and travel dates, then set how often you expect to use each category. RoamGauge will: • Estimate data use for each category. • Add a 20% reserve to reduce the risk of running out during your trip. • Recommend an appropriate data allowance and validity period. • Save your latest plan locally so you can return to it later. • Remind you to check eSIM support, carrier lock status, and installation timing. Privacy by design: every calculation runs locally in your browser. RoamGauge does not read the current page or browsing history and has no host permissions, analytics SDK, remote code, or account system. Affiliate disclosure: affiliate links are not enabled in this version. It contains no referral ID or coupon code and does not earn commission. A future version may enable plan buttons only after a partner provides written approval for browser-extension traffic and a clear user benefit. Every partner visit would still require a deliberate click; RoamGauge will never rewrite links in the background, overwrite cookies, or apply referral codes automatically. Final prices and offers are always set by the partner. Single purpose: Estimate mobile data needs from a user's travel plan and recommend an appropriate data allowance and validity period. Permissions: • Side panel: Displays the travel data planner. • Storage: Saves only the latest plan locally on the user's device.