On this page 10 sections
Our method
We read each provider’s official plan and help pages on 6 November 2026 (Asia/Shanghai) and restated the facts in our own words. We did not buy or speed-test these plans.
Saily vs Airalo at a glance
Checked 6 November 2026- Quick verdict
- SplitLight fixed GB → Saily; rare destination / Discover+ style needs → Airalo
- Saily model
- Fixed GB packs + some Unlimited options; 180-day activation window on plan pages we checked; limitless hotspot claim on Japan/China pages
- Airalo model
- Local, regional and global eSIMs; fixed-data and unlimited-day packages; large destination list
- Japan entry (fixed)
- $3.99 vs $4.00Saily 1 GB / 7 days vs Airalo 1 GB / 3 days
- Japan unlimited 7d
- Airalo $26.50Saily Unlimited sample we captured was 15 days at $48.99
- Checked
- 6 November 2026 (Asia/Shanghai)
Sample prices are destination-specific. Match the same GB and days before you call either brand cheaper.
Affiliate links. Prices are set by the provider and confirmed at checkout. Brands without an approved tracking link open the official site.
Quick verdict
Choose Saily if you want a small fixed plan, one reusable profile pattern Saily documents in its app help, and the security features Saily lists (ad blocking and related tools on its security page). Choose Airalo if you need a destination or plan type Saily does not list, or you prefer Airalo’s unlimited-by-the-day ladder on that country. For day-priced unlimited without counting GB, also open Holafly vs Saily and Airalo vs Holafly.
How they differ at a glance
| Topic | Saily (official pages) | Airalo (official pages) |
|---|---|---|
| Coverage claim | Large destination list on saily.com | 200+ locations marketed on airalo.com |
| Plan types | Fixed GB; Unlimited with a published daily high-speed allowance on Japan (5 GB/day then lower speed) | Fixed GB and Unlimited-day packages on many destinations |
| Activation window | 180 days stated on Japan and China plan pages we read on 6 November 2026 | Follow the package page; windows vary by product |
| Hotspot | Japan/China pages we read: limitless hotspot sharing | Package-level; confirm on the plan you buy |
| Security extras | Security features page lists in-app protection tools | Not a primary marketing pillar on destination pages we read |
| Calls / SMS | Data-focused travel plans on pages we checked | Some Discover+ / voice products exist — only if shown on the plan page |
Official pages, checked 6 November 2026.
Pricing model and Japan sample
Fair comparisons use the same destination, same GB and same validity. Below is a Japan snapshot from official pages on 6 November 2026. Full tables live on our Japan eSIM guide.
| Plan | Saily Japan | Airalo Japan |
|---|---|---|
| 1 GB short | $3.99 · 7 days | $4.00 · 3 days |
| ~3 GB | $7.99 · 30 days | $7.50 (3 GB) / $8.00 (3 GB · 7 days) |
| 5 GB | $10.99 · 30 days | $10.00 · 7 days; $11.00 · 30 days |
| 10 GB | $17.99 · 30 days | $17.00 · 7 days; $18.00 · 30 days |
| 20 GB | $24.99 · 30 days | $24.00 · 15 days; $25.00 · 30 days |
| Unlimited 7 days | Confirm day selector at checkout (15-day Unlimited listed $48.99) | $26.50 |
| Unlimited 30 days | Confirm at checkout | $69.00 |
Saily and Airalo official Japan pages, checked 6 November 2026. Currency and promos can change the checkout number.
For Europe and Thailand, use the destination guides rather than copying stale numbers here: Europe, Thailand & Southeast Asia.
Setup and multi-country use
Install and activation are not the same moment. See how to install and activate before or after landing. For multi-country trips, confirm whether you can top up or add a regional pack without deleting the profile — that rule sits in each provider’s help centre and can change.
Fair use, hotspot and unlimited
Unlimited is never a blank cheque. Holafly destination pages we have checked often publish a 1 GB/day hotspot share cap; Saily’s Japan Unlimited text we captured on 6 November 2026 states 5 GB/day without a speed limit, then unlimited data at up to 1 Mbps. Read the live plan page. Deep dive: unlimited fair-use guide.
Who should choose which
Saily fixed GB
Maps, chat and tickets on a known GB budget, with the long activation window Saily publishes.
Airalo
When your country or unlimited-day price is better on Airalo’s page, or you need a product line Saily does not show.
Holafly / regional
Day-priced unlimited with hotspot caps, or a Europe regional pack for Christmas market hops — see Holafly vs Saily and the Christmas markets guide.
How Signal Atlas compares
We quote official pages with a check date. We do not invent speed tests or Trustpilot trends. Method: About. Four-way view: Airalo vs Nomad vs Saily vs Holafly. Disclosure: Affiliate disclosure.
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Open the checklistFrequently asked questions
Is Saily or Airalo better?
Saily usually fits light fixed-data trips and travellers who want the security features Saily publishes. Airalo usually fits rarer destinations or unlimited-day packages that look better on Airalo’s page. Compare the official plan for your destination on the day you buy (6 November 2026 sample above is Japan-only).
Which is cheaper?
It depends on GB and days. On Japan fixed packs checked 6 November 2026, entry prices were within about a dollar; mid sizes traded places. Match the same GB and validity on both official pages.
Do I need a new eSIM for every country?
Follow each provider’s current install rules. Many travellers prefer adding packs without reinstalling every time — confirm in the app help before a multi-country itinerary.
When should I pick Holafly instead?
When you want to pay by day for unlimited data and accept published fair-use and hotspot caps. See Holafly vs Saily.
Sources and method
Last checked 6 November 2026
All prices and plan facts on this page were read from these official pages on 6 November 2026. We have not purchased or tested these plans ourselves; we summarize what the providers publish, in our own words. Read our method.
- Saily — Japan eSIMChecked 6 November 2026
- Airalo — Japan eSIMsChecked 6 November 2026
- Holafly — eSIM for JapanChecked 6 November 2026
- Saily — Security featuresChecked 6 November 2026
- Airalo vs Holafly — Signal AtlasChecked 6 November 2026