GigSky vs eSIM.dog for cruises
Short answer
eSIM.dog has the cheapest way onto a ship’s network anywhere — a 100 MB plan at $14.49, the only sub-$20 entry in the market — and it is by a wide margin the most expensive data on this site once you need more than a trickle.
So this is a volume question. Under a few hundred megabytes, eSIM.dog is the cheaper purchase. Above that, GigSky costs roughly a sixth as much per gigabyte and covers your port days as well.
Prices last confirmed
Entry price and running cost point in opposite directions
Almost every comparison on this site can be settled by looking at cost per gigabyte. This one cannot, because eSIM.dog wins decisively on the price of admission and loses decisively on everything after it.
That is not a pricing error on their part — it is what a small reseller of a specialist maritime network can offer. eSIM.dog resells Telenor Maritime’s shipboard service, which is why the claim is credible, and also why they control none of the underlying economics.
The practical test is honest and simple: write down what you actually intend to do online for a week at sea. "Tell my family the ship has not sunk, twice a day" is a hundred-megabyte problem and eSIM.dog is the cheapest answer to it. "Keep up with messages, maps, email and a few photos" is a one-to-three-gigabyte problem, and at that size the two are not in the same league.
Side by side
| GigSky | eSIM.dog | |
|---|---|---|
| Works at sea | Yes | Yes |
| Works in port | Yes | Yes |
| Best effective $/GB | $5.95/GB | — |
| Entry price | $4.99 | — |
| Free trial | 100 MB, no card | No |
| Ferry plans | Yes — the only ones in the market | No |
| Discount code | ESIMDUDE | DUDEADVICE5 |
GigSky plans
The only eSIM provider selling true maritime data across 290+ cruise ships, with "Cruise + Land" plans that hand off between the ship's at-sea network and local networks in port. It is also the only brand in the market with ferry-branded plans (Brittany Ferries, Color Line, DFDS, Stena Line) and a free 100 MB trial.
| Plan | Data | Validity | Price | $/GB | Coverage | |
|---|---|---|---|---|---|---|
| Cruise & Middle East Unlimited 15-day | Unlimited | 15 days | $59.49 | $5.95/GB | 🟢 At sea | Get deal |
| Cruise & Middle East Unlimited 7-day | Unlimited | 7 days | $31.99 | $6.85/GB | 🟢 At sea | Get deal |
| Cruise & Middle East Unlimited 3-day | Unlimited | 3 days | $14.49 | $7.25/GB | 🟢 At sea | Get deal |
| Cruise & Middle East Unlimited 1-day | Unlimited | 1 day | $4.99 | $7.49/GB | 🟢 At sea | Get deal |
| European Ferries 5GB | 5 GB | 1 day | $39.99 | $8.00/GB | 🔵 Ferry | Get deal |
| Europe Ferries + Land 5GB | 5 GB | 7 days | $40.99 | $8.20/GB | 🔵 Ferry | Get deal |
| Cruise + Americas/Caribbean Unlimited 15-day | Unlimited | 15 days | $82.99 | $8.30/GB | 🟢 At sea | Get deal |
| Cruise + Asia Pacific Unlimited 15-day | Unlimited | 15 days | $82.99 | $8.30/GB | 🟢 At sea | Get deal |
| Cruise + Europe Unlimited 15-day | Unlimited | 15 days | $82.99 | $8.30/GB | 🟢 At sea | Get deal |
| Cruise + World Unlimited 15-day | Unlimited | 15 days | $82.99 | $8.30/GB | 🟢 At sea | Get deal |
| Cruise + Middle East Unlimited 15-day | Unlimited | 15 days | $82.99 | $8.30/GB | 🟢 At sea | Get deal |
| Cruise - At Sea Only Unlimited 15-day | Unlimited | 15 days | $82.99 | $8.30/GB | 🟢 At sea | Get deal |
| European Ferries 3GB | 3 GB | 1 day | $24.99 | $8.33/GB | 🔵 Ferry | Get deal |
| Europe Ferries + Land 3GB | 3 GB | 7 days | $25.99 | $8.66/GB | 🔵 Ferry | Get deal |
| Cruise + Americas/Caribbean Unlimited 7-day | Unlimited | 7 days | $44.49 | $9.53/GB | 🟢 At sea | Get deal |
| Cruise + Asia Pacific Unlimited 7-day | Unlimited | 7 days | $44.49 | $9.53/GB | 🟢 At sea | Get deal |
| Cruise + Europe Unlimited 7-day | Unlimited | 7 days | $44.49 | $9.53/GB | 🟢 At sea | Get deal |
| Cruise + World Unlimited 7-day | Unlimited | 7 days | $44.49 | $9.53/GB | 🟢 At sea | Get deal |
| Cruise + Middle East Unlimited 7-day | Unlimited | 7 days | $44.49 | $9.53/GB | 🟢 At sea | Get deal |
| Cruise - At Sea Only Unlimited 7-day | Unlimited | 7 days | $44.49 | $9.53/GB | 🟢 At sea | Get deal |
| Cruise + Americas/Caribbean Unlimited 3-day | Unlimited | 3 days | $20.49 | $10.24/GB | 🟢 At sea | Get deal |
| Cruise + Asia Pacific Unlimited 3-day | Unlimited | 3 days | $20.49 | $10.24/GB | 🟢 At sea | Get deal |
| Cruise + Europe Unlimited 3-day | Unlimited | 3 days | $20.49 | $10.24/GB | 🟢 At sea | Get deal |
| Cruise + World Unlimited 3-day | Unlimited | 3 days | $20.49 | $10.24/GB | 🟢 At sea | Get deal |
| Cruise + Middle East Unlimited 3-day | Unlimited | 3 days | $20.49 | $10.24/GB | 🟢 At sea | Get deal |
| Cruise - At Sea Only Unlimited 3-day | Unlimited | 3 days | $20.49 | $10.24/GB | 🟢 At sea | Get deal |
| Cruise + Americas/Caribbean Unlimited 1-day | Unlimited | 1 day | $6.99 | $10.49/GB | 🟢 At sea | Get deal |
| Cruise + Asia Pacific Unlimited 1-day | Unlimited | 1 day | $6.99 | $10.49/GB | 🟢 At sea | Get deal |
| Cruise + Europe Unlimited 1-day | Unlimited | 1 day | $6.99 | $10.49/GB | 🟢 At sea | Get deal |
| Cruise + World Unlimited 1-day | Unlimited | 1 day | $6.99 | $10.49/GB | 🟢 At sea | Get deal |
| Cruise + Middle East Unlimited 1-day | Unlimited | 1 day | $6.99 | $10.49/GB | 🟢 At sea | Get deal |
| Cruise - At Sea Only Unlimited 1-day | Unlimited | 1 day | $6.99 | $10.49/GB | 🟢 At sea | Get deal |
| European Ferries 1GB | 1 GB | 1 day | $10.99 | $10.99/GB | 🔵 Ferry | Get deal |
| Europe Ferries + Land 1GB | 1 GB | 7 days | $11.99 | $11.99/GB | 🔵 Ferry | Get deal |
| Cruise & Middle East 10GB | 10 GB | 30 days | $119.99 | $12.00/GB | 🟢 At sea | Get deal |
| Cruise & Middle East 3GB | 3 GB | 15 days | $39.99 | $13.33/GB | 🟢 At sea | Get deal |
| Cruise & Middle East 5GB | 5 GB | 30 days | $69.99 | $14.00/GB | 🟢 At sea | Get deal |
| European Ferries 512MB | 512 MB | 1 day | $7.99 | $15.98/GB | 🔵 Ferry | Get deal |
| Cruise + Americas/Caribbean 10GB | 10 GB | 30 days | $174.99 | $17.50/GB | 🟢 At sea | Get deal |
| Cruise + Asia Pacific 10GB | 10 GB | 30 days | $174.99 | $17.50/GB | 🟢 At sea | Get deal |
| Cruise + Europe 10GB | 10 GB | 30 days | $174.99 | $17.50/GB | 🟢 At sea | Get deal |
| Cruise + World 10GB | 10 GB | 30 days | $174.99 | $17.50/GB | 🟢 At sea | Get deal |
| Cruise + Middle East 10GB | 10 GB | 30 days | $174.99 | $17.50/GB | 🟢 At sea | Get deal |
| Cruise - At Sea Only 10GB | 10 GB | 30 days | $174.99 | $17.50/GB | 🟢 At sea | Get deal |
| Europe Ferries + Land 512MB | 512 MB | 7 days | $8.99 | $17.98/GB | 🔵 Ferry | Get deal |
| Cruise + Europe 5GB | 5 GB | 30 days | $94.99 | $19.00/GB | 🟢 At sea | Get deal |
| Cruise & Middle East 1GB | 1 GB | 7 days | $19.99 | $19.99/GB | 🟢 At sea | Get deal |
| Cruise + Europe 3GB | 3 GB | 15 days | $59.99 | $20.00/GB | 🟢 At sea | Get deal |
| Cruise + Americas/Caribbean 5GB | 5 GB | 30 days | $99.99 | $20.00/GB | 🟢 At sea | Get deal |
| Cruise + Asia Pacific 5GB | 5 GB | 30 days | $99.99 | $20.00/GB | 🟢 At sea | Get deal |
| Cruise + World 5GB | 5 GB | 30 days | $99.99 | $20.00/GB | 🟢 At sea | Get deal |
| Cruise + Middle East 5GB | 5 GB | 30 days | $99.99 | $20.00/GB | 🟢 At sea | Get deal |
| Cruise - At Sea Only 5GB | 5 GB | 30 days | $99.99 | $20.00/GB | 🟢 At sea | Get deal |
| Cruise + Americas/Caribbean 3GB | 3 GB | 15 days | $62.99 | $21.00/GB | 🟢 At sea | Get deal |
| Cruise + Asia Pacific 3GB | 3 GB | 15 days | $62.99 | $21.00/GB | 🟢 At sea | Get deal |
| Cruise + World 3GB | 3 GB | 15 days | $62.99 | $21.00/GB | 🟢 At sea | Get deal |
| Cruise + Middle East 3GB | 3 GB | 15 days | $62.99 | $21.00/GB | 🟢 At sea | Get deal |
| Cruise - At Sea Only 3GB | 3 GB | 15 days | $62.99 | $21.00/GB | 🟢 At sea | Get deal |
| Cruise & Middle East 512MB | 512 MB | 1 day | $10.99 | $21.98/GB | 🟢 At sea | Get deal |
| Cruise + Europe 1GB | 1 GB | 7 days | $29.99 | $29.99/GB | 🟢 At sea | Get deal |
| Cruise + Americas/Caribbean 1GB | 1 GB | 7 days | $31.99 | $31.99/GB | 🟢 At sea | Get deal |
| Cruise + Asia Pacific 1GB | 1 GB | 7 days | $31.99 | $31.99/GB | 🟢 At sea | Get deal |
| Cruise + World 1GB | 1 GB | 7 days | $31.99 | $31.99/GB | 🟢 At sea | Get deal |
| Cruise + Middle East 1GB | 1 GB | 7 days | $31.99 | $31.99/GB | 🟢 At sea | Get deal |
| Cruise - At Sea Only 1GB | 1 GB | 7 days | $31.99 | $31.99/GB | 🟢 At sea | Get deal |
| Cruise + Europe 512MB | 512 MB | 1 day | $16.99 | $33.98/GB | 🟢 At sea | Get deal |
| Cruise + Americas/Caribbean 512MB | 512 MB | 1 day | $17.99 | $35.98/GB | 🟢 At sea | Get deal |
| Cruise + Asia Pacific 512MB | 512 MB | 1 day | $17.99 | $35.98/GB | 🟢 At sea | Get deal |
| Cruise + World 512MB | 512 MB | 1 day | $17.99 | $35.98/GB | 🟢 At sea | Get deal |
| Cruise + Middle East 512MB | 512 MB | 1 day | $17.99 | $35.98/GB | 🟢 At sea | Get deal |
| Cruise - At Sea Only 512MB | 512 MB | 1 day | $17.99 | $35.98/GB | 🟢 At sea | Get deal |
| Cruise + World 250MB | 250 MB | 1 day | $19.99 | $81.88/GB | 🟢 At sea | Get deal |
| Cruise + Americas/Caribbean 100MB | 100 MB | 7 days | Free | — | 🟢 At sea | Get deal |
| Cruise + Asia Pacific 100MB | 100 MB | 7 days | Free | — | 🟢 At sea | Get deal |
| Cruise + Europe 100MB | 100 MB | 7 days | Free | — | 🟢 At sea | Get deal |
| Cruise + World 100MB | 100 MB | 7 days | Free | — | 🟢 At sea | Get deal |
| Cruise + Middle East 100MB | 100 MB | 7 days | Free | — | 🟢 At sea | Get deal |
| Cruise - At Sea Only 100MB | 100 MB | 7 days | Free | — | 🟢 At sea | Get deal |
| Cruise & Middle East 100MB | 100 MB | 7 days | Free | — | 🟢 At sea | Get deal |
eSIM.dog plans
Sells both a huge land catalog at keen per-GB rates and — unusually — a genuine Telenor Maritime satellite plan that works at sea on 150+ named ships and ferries. The cheapest way onto a ship network at $14.49 for 100MB, and the most expensive per gigabyte beyond that.
| Plan | Data | Validity | Price | $/GB | Coverage | |
|---|---|---|---|---|---|---|
| eSIM.dog sells no cruise, ferry or maritime plan — every one of its packs runs on land networks, which stop about twelve nautical miles offshore. That is why this table is empty, and it is the whole point of the comparison above. | ||||||
Where eSIM.dog is genuinely the only option
Its vessel list is Telenor Maritime’s, and it reaches European operators that the larger names miss — AIDA, Costa, Marella, Grimaldi, GNV and Anek among them, alongside Cunard, P&O Cruises, Viking Ocean, Crystal and a set of ferry operators including Brittany Ferries, Stena, Color Line, Irish Ferries, Finnlines and Corsica Ferries.
If you are sailing on a European operator that GigSky does not list, the comparison ends there and eSIM.dog is your answer regardless of what a gigabyte costs. Being expensive and available beats being cheap and absent.
Coverage is per-vessel rather than per-operator, and eSIM.dog publish the list by hull. Check yours by name — an operator appearing on the list does not mean every ship in its fleet does.
What the per-gigabyte gap actually looks like
At its best rate eSIM.dog works out around six times GigSky’s cost per gigabyte. That multiple is not a rounding difference or a promotional gap that might close next quarter; it reflects two different positions in the supply chain.
The consequence for a buyer is that eSIM.dog’s range rewards buying exactly what you need and punishes buying a margin of safety. Its plans run from 100 MB to 3 GB across validity windows from five days to a full year, so the sizing is fine-grained — use that, rather than rounding up out of caution as you might on any other provider.
Our cheapest-per-gigabyte sort will never rank eSIM.dog first, and a test enforces that, because a ranking that presented it as a bargain would be actively misleading on the site’s single most important comparison.
Sea only, which changes the total cost
eSIM.dog Cruise is a sea-days product. eSIM.dog state plainly that it does not work on land, so port days need a separate country or regional eSIM — the same two-plan discipline a Saily setup requires.
GigSky’s Cruise + Land family covers both zones on one purchase, so the honest comparison is not one plan against one plan. It is a GigSky plan against an eSIM.dog plan plus whatever you buy for the ports. On a port-dense Mediterranean itinerary that second purchase is doing most of the work.
GigSky also sells the only ferry-branded plans in the market, and it offers a free 100 MB trial with no card — which is worth noting precisely because 100 MB is also eSIM.dog’s entry product. One of those two hundred-megabyte allowances costs $14.49 and one costs nothing.
Who should buy which
The answer changes with the itinerary more than with the provider, so this is by traveller rather than by feature.
| If this is you | Buy | Why |
|---|---|---|
| Someone who wants the absolute cheapest way to be reachable at sea | eSIM.dog | A 100 MB plan at $14.49 is the lowest price of admission to a ship network anywhere. For twice-daily messages and nothing else, nothing undercuts it. |
| A passenger on AIDA, Costa, Marella, Grimaldi, GNV or Anek | eSIM.dog | These are the European operators the larger providers miss. Availability beats price when the alternative is no coverage at all. |
| Anyone expecting to use a gigabyte or more | GigSky | The gap is roughly six to one per gigabyte. At that size eSIM.dog stops being a cheap entry and becomes the most expensive data you can buy at sea. |
| Anyone who also wants data in port | GigSky | eSIM.dog is sea-only by design, so a fair comparison adds the cost of a second regional eSIM to its side of the ledger. |
| A first-timer testing whether any of this works on their ship | GigSky | Its trial is the same 100 MB eSIM.dog charges $14.49 for, and it costs nothing. Test with the free one even if you intend to buy the other. |
Our verdict
GigSky for almost everyone, on cost per gigabyte and on covering the ports. The gap is large enough that it is not a close call once you are buying real data rather than a lifeline.
eSIM.dog for two specific readers, and for those two it is not just acceptable but the right answer: someone who needs a hundred megabytes and nothing more, and anyone on a European operator that GigSky does not list. That second case is the more important one — this is the provider that fills a genuine hole in the market.
What we would not do is buy eSIM.dog at three gigabytes without checking GigSky first. That is where the six-to-one multiple does its damage, and it is the one purchase on this page that a reader is likely to regret.
GigSky vs eSIM.dog: your questions
01Why is eSIM.dog so expensive per gigabyte?+
It resells Telenor Maritime’s shipboard satellite service rather than operating a network, so it does not control the underlying cost. That is also why the coverage claim is credible: there is a real maritime operator behind it. Cheap entry, expensive volume — the two facts have the same cause.
02Does eSIM.dog work in port?+
No. eSIM.dog state that the cruise plan does not work on land, so it is sea days only. You need a separate country or regional eSIM for port days, which should be added to its side when you compare total cost.
03Is the $14.49 plan actually useful?+
For messaging and nothing else, yes — it is the only sub-$20 route onto a ship network in the market. It is a hundred megabytes, so treat it as a lifeline rather than a connection: text messages, a weather check, confirming a flight. Photos and maps will finish it in an afternoon.
04Which one covers my European cruise line?+
eSIM.dog is the stronger bet on AIDA, Costa, Marella, Grimaldi, GNV and Anek, which its Telenor Maritime list reaches and the larger providers largely do not. GigSky is the wider list overall and the stronger bet on mainstream North American lines. Check both by ship name rather than by operator.
05Can I try either before buying?+
GigSky offers a free 100 MB cruise trial with no card required. eSIM.dog does not — its smallest plan is the same 100 MB and costs $14.49. If you only want to know whether a maritime eSIM connects on your ship, use the free one.
06Will your cheapest ranking ever put eSIM.dog first?+
No, and that is enforced by a test rather than by editorial care. At roughly six times GigSky’s cost per gigabyte, ranking it as the cheapest option would misrepresent the single most important comparison on this site.