Holafly vs Saily: priced by the day or by the gigabyte?
Short answer: Holafly is publicly described as unlimited data bought by the day, under a fair-use policy. Saily is described as plans sold by data size from the team behind NordVPN, with an unlimited subscription tier reported alongside. They only compare once you convert one unit into the other: work out how many gigabytes your trip needs, then see what each side charges for that.
Two companies, two pricing units. That is why a table of “price for 7 days in Italy” tells you so little: one side is quoting a number of days, the other a number of gigabytes, and the cheaper of the two flips depending on whether you are the kind of traveller who barely touches data or the kind who is on video calls all day.
Convert everything to one unit first
If you are looking at an unlimited plan, the only price that matters is the price for your number of days. If you are looking at a fixed plan, the only price that matters is the price for the number of gigabytes you will really use. Neither number helps until you know your own usage, so do the maths once: gigabytes per day multiplied by days, plus a margin. Then you can ask each side the same question in the unit it uses.
Trip type decides it more than brand does
- A long weekend, mostly maps and messaging. Fixed data is almost always the smaller bill. Paying by the day for unlimited data you will not use is the classic overspend.
- Two weeks of video, hotspot and uploads. A large fixed plan can cost more than a day-priced unlimited one, and the risk of running out mid-trip is real. This is where unlimited earns its place.
- A month-long stay. Check both the validity ceiling and how each side handles an extension; a plan that cannot be extended may force a second install.
- A trip where you want the security tools. That tilts toward the company that bundles them. Judge that on its own merits, not as a data discount.
The two fine-print traps
On unlimited: find the daily threshold after which speed drops, and what the throttled speed is. Reports of the threshold differ by source and plan, so use the figure on the plan page, not a review. Also read the tethering line; reviewers describe hotspot allowances as capped or restricted on some unlimited plans.
On fixed data with a bundle: check whether the plan is a one-off purchase or part of a monthly tier. A subscription tier has been reported alongside the one-off plans, and the only way to be sure which one you are buying is the checkout screen.
Questions worth asking before you pay either
- If I run out, can I extend this eSIM, or do I install a second one?
- Does anything renew without me doing something?
- Does hotspot work on this plan, in this country?
- Does the data start when I install it or when I land? Some plans start counting the days earlier than you expect.
| What to settle | Holafly: check | Saily: check | eSIM Ventures |
|---|---|---|---|
| Unit you pay in | Days of unlimited: how many exactly? | Gigabytes: how many, and for how many days? | Gigabytes, with validity shown before you pay. |
| Speed ceiling | Fair-use threshold and throttled speed. | Is there any fair-use rule on the tier you pick? | No fair-use policy: fixed data stops, it does not slow. |
| Hotspot | Allowed, capped or restricted on this plan? | Allowed on this plan? | Enabled on every plan. |
| Recurring billing | Is anything recurring? | Is the unlimited tier a subscription? | Nothing recurs. |
Where eSIM Ventures fits
We are neither of these. We sell fixed data, so for light and medium use we are closest to the fixed side of Saily’s range, without the security bundle or a subscription. From £1.49: 6 sizes between 1 GB and 20 GB, 202 destinations, hotspot included, nothing renewing. A few real plans to put against whatever you are looking at:
- Spain: 5 GB for £4.99, valid 30 days
- Japan: 5 GB for £5.49, valid 30 days
- United States: 5 GB for £6.99, valid 30 days
If your answer to the break-even sum is a large number you cannot predict, unlimited from the first company is probably the better fit, and this page goes through when. If you want the VPN bundle, read our Saily comparison and decide whether you would buy it on its own. Not sure how much you need? How much data do I need? walks through typical trips, and Thailand and Turkey show the full range of sizes for two popular routes.
More travel eSIM comparisons
- Airalo vs Holafly — fixed data against unlimited, and the break-even sum
- Airalo vs Saily — a large marketplace against a security-bundled eSIM
- Airalo vs Nomad — two fixed-data sellers, and what separates them
- Jetpac alternative — app-first buying and introductory offers
- Yesim alternative — three plan types and pay-as-you-go
- GigSky alternative — one reusable eSIM across many trips
- Holafly alternative, Airalo alternative, Saily alternative, Nomad alternative and Ubigi alternative
- How to compare any two providers — the method, on one page
No Holafly or Saily prices appear on this page: they change, and a stale figure would be unfair to them and no use to you. What is said about other providers is how they publicly describe their own products, and some of it is reported by reviewers who disagree with each other, so check each provider’s current terms before you buy. Every figure on our side comes from our live catalogue. Last reviewed 7 November 2026.
