Roamless or aloSIM for Vietnam?

2 brands checked on 27/10/2026 · published by Mocom SAS (Sirocco)

Brands compared: Sirocco, Airalo, Holafly, Orange Travel, Instabridge, Roamless, aloSIM, Kolet, Sim Local, Eskimo, eSIM.me and Jetpac

As of 27/10/2026, out of 16 trips compared in Vietnam: Roamless ranked higher on 16, aloSIM on 0; average gap 21%.

Roamless

Ranked higher on 16 of the 16 trips compared★ 4.8 · 3,295 reviewsOfficial website ›

aloSIM

Ranked higher on 0 of the 16 trips compared★ 4.7 · 419 reviewsOfficial website ›

The verdict, by type of trip

Short stay3 days, 5 GBRoamless€9.79 against €11.00 with aloSIM (12% more)
One week7 days, 5 GBRoamless€9.79 against €11.00 with aloSIM (12% more)
Unlimited7 days, unlimitedRoamless€22.90 against €28.00 with aloSIM (22% more)
Family of 44 travellers, 7 days, 5 GB eachRoamless€39.16 against €44.00 with aloSIM (12% more)

A written rule, the same for every pair: for each type of trip, the better ranked of the two on price per GB (for unlimited, on price), at the prices we checked. Nothing is picked by hand; customer ratings don't count.

Prices, trip by trip

For each trip, each brand's cheapest plan that covers the duration and the data. In green, the better ranked of the two: price per GB, not counting GB beyond one and a half times the data requested (for unlimited, price). "+x%", how much more the other one costs, per GB when the data differs.

Prices, trip by trip
Trip	Roamless	aloSIM
3 days
1 GB, 3 days	€3.53that's €1.18/dayRanked higher	€4.50that's €1.50/day27% more expensive
5 GB, 3 days	€9.79that's €3.26/dayRanked higher	€11.00that's €3.67/day12% more expensive
10 GB, 3 days	€16.04that's €5.35/dayRanked higher	€19.00that's €6.33/day18% more expensive
Unlimited, 3 days	€10.22that's €3.41/dayRanked higher	€12.00that's €4.00/day17% more expensive
7 days
1 GB, 7 days	€3.53that's €0.50/dayRanked higher	€4.50that's €0.64/day27% more expensive
5 GB, 7 days	€9.79that's €1.40/dayRanked higher	€11.00that's €1.57/day12% more expensive
10 GB, 7 days	€16.04that's €2.29/dayRanked higher	€19.00that's €2.71/day18% more expensive
Unlimited, 7 days	€22.90that's €3.27/dayRanked higher	€28.00that's €4.00/day22% more expensive
15 days
1 GB, 15 days	€3.531 GBthat's €0.24/dayRanked higher	€6.502 GBthat's €0.43/day23% more expensive per GB
5 GB, 15 days	€9.79that's €0.65/dayRanked higher	€11.00that's €0.73/day12% more expensive
10 GB, 15 days	€16.04that's €1.07/dayRanked higher	€19.00that's €1.27/day18% more expensive
Unlimited, 15 days	€39.42that's €2.63/dayRanked higher	€46.00that's €3.07/day17% more expensive
30 days
1 GB, 30 days	€3.531 GBthat's €0.12/dayRanked higher	€7.503 GBthat's €0.25/day42% more expensive per GB
5 GB, 30 days	€9.79that's €0.33/dayRanked higher	€11.00that's €0.37/day12% more expensive
10 GB, 30 days	€16.04that's €0.53/dayRanked higher	€19.00that's €0.63/day18% more expensive
Unlimited, 30 days	€55.69that's €1.86/dayRanked higher	€75.00that's €2.50/day35% more expensive

12 brands compared, not an exhaustive listWhy this ranking?

Compared on price per GB: for each trip, each brand's cheapest plan that covers the duration and the data, at the public price we checked, divided by its GB (at most one and a half times the data requested); for unlimited, the price. Average gap: the mean, over the trips compared, of the difference between the two brands relative to the better ranked one.

Not an exhaustive comparison: 12 brands out of the dozens that sell eSIMs. The list of brands compared is in our Methodology.

eSIMeter is published by Mocom SAS, which sells Sirocco: the site is funded by those sales. No other brand pays us.

Customer ratings

App Store United Kingdom, checked on 27/10/2026. Ratings don't count in the verdict.

Roamless★ 4.8 · 3,295 reviews
aloSIM★ 4.7 · 419 reviews

Going further

A page per destination is only published if both brands have a price for at least 4 of the 16 trips, and if the better ranked one changes with the trip or the average gap reaches 5%. Otherwise they are still compared in the destination's ranking. Methodology