Saily review

Saily is a strong pick if you want to pay little for a week of maps, messages and light browsing. Its Japan page, loaded in USD, started at $3.99 for 1 GB over 7 days, then $7.99 for 3 GB and $10.99 for 5 GB over 30 days. Saily says Japan plans use local operators including KDDI and SoftBank, with 4G/LTE and 5G where available. A plan activates on its own when you land, or 180 days after purchase, so you can buy early. You can add new destinations to the eSIM you already installed by topping up, which saves reinstalling for each trip. Saily also sells a US phone number that you pair with a call and text plan inside the app, which helps if you need a number for verification codes or calls. The weak spot is unlimited data: the Japan unlimited plan was $48.99, so heavy users will do better with Maya, Ubigi or Holafly.

Who it is for

Budget travelers who want a small data plan and an optional US number for calls and texts.

Price

Japan from $3.99 for 1 GB over 7 days.

1 GB 7 days US$3.99
Quoted from the vendor pricing page on November 8, 2026.

Key features

• Plans from 1 GB up to unlimited, including the Saily Ultra global unlimited plan
• Plans activate automatically when you reach your destination, or 180 days after purchase
• Add new destinations to an existing eSIM by topping up instead of reinstalling
• Optional US phone number paired with a call and text plan in the app
• Japan plans run on local operators including KDDI and SoftBank, with 5G where available

Strengths and weaknesses

• Strength: Low entry price: 1 GB in Japan for $3.99
• Strength: One installed eSIM can be reused for new destinations
• Strength: Phone number add-on fills the data-only gap
• Weakness: Unlimited Japan plan was $48.99, far above its small plans
• Weakness: The phone number costs extra on top of data
• Weakness: Only one unlimited Japan plan on the page we checked

Key facts

• Japan 1 GB, 7 days: $3.99
• Japan 3 GB, 30 days: $7.99
• Japan 5 GB, 30 days: $10.99
• Activation window: 180 days after purchase
• Phone number: US number, paired with a call and text plan

Where it ranks

Saily is No. 2 in our Best eSIM Apps verdict.