Siima vs Holafly 2026
Holafly built its brand on one flat "unlimited" price, no matter the country or how long you're staying. Siima goes the other way — a plan sized to the data you'll actually use, priced line by line. Which one is the better deal depends entirely on how much data your trip needs.
Two different bets on how you'll use data
Holafly's pricing doesn't change by country or by how much data you pick — it's the same number everywhere. $19.50 gets you 5 days in Japan or 5 days in Peru, "unlimited" either way. That's a genuinely simple pitch: no calculator, no guessing your GB, one price you compare across destinations without doing math.
Siima bets the opposite way. Most travelers don't actually use unlimited data — maps, messages, some browsing, maybe a bit of streaming adds up to 3-5 GB over a week for most people, not per day. So Siima sells the GB you'll use and shows the plan cost, service fee, and processing fee as separate line items, rather than folding an unlimited allowance most people won't fully use into a flat rate.
| Trip type | Siima | Holafly |
|---|---|---|
| 7 days, light use (maps, messaging) | Pay for ~2-3 GB, usually cheaper | Flat unlimited rate regardless |
| 7 days, heavy streaming / hotspot | Pay for a bigger GB tier | Flat rate, but throttled past daily cap |
| Multi-country trip, same length | Repriced per country | Same price in 160+ destinations |
What "unlimited" doesn't say out loud
Holafly's plans carry a fair-use policy that isn't shown at checkout. Cross a daily usage threshold — commonly somewhere between 2 GB and 5 GB depending on the destination — and your speed drops, sometimes down to 256 Kbps, slow enough that video calls and streaming stop working properly. Hotspot and tethering get their own, tighter cap, often around 500 MB a day, which catches people who planned to share the connection with a laptop.
None of this makes "unlimited" false, exactly — you won't get cut off entirely. But it's a meaningfully different product than the word implies, and the actual threshold lives in the terms of service, not the pricing page. Siima doesn't have this problem because it doesn't sell unlimited: you buy a GB amount, you can see exactly what it costs, and there's no separate throttling layer to discover after you've paid.
App vs no app
Holafly activates through its app — you download it, create an account, and pick your plan from inside it. If you already travel with the app installed, that's one less step next time. If it's your first trip with Holafly, you're doing an app-store download and account setup before you've picked a plan, ideally on decent Wi-Fi rather than an airport connection.
Siima skips that step. Pick a country and data size in a mobile browser, pay, and the QR code and install link arrive by email inside a minute — no download, no account. The tradeoff is the same one that applies to any account-free service: there's no single app dashboard listing every eSIM you've bought, so each purchase lives in its own confirmation email instead.
Buying for someone else, or through an AI assistant
Because Siima doesn't require an account, buying an eSIM for someone else is just entering their email at checkout — a parent, a colleague, anyone — and they get everything directly. Siima also runs a public MCP server at api.siima.online/mcp, so an AI assistant like Claude or ChatGPT can search plans and generate a checkout link on its own. Holafly's app-account model doesn't support either of these without sharing a login.
Where Holafly still has the edge
If you genuinely use a lot of data — hours of video calls, tethering a laptop for work, streaming on the go — and you'd rather pay one flat number than think about GB at all, Holafly's model removes that decision entirely. The same price across 160+ countries also makes it easy to budget a multi-leg trip without repricing at every border, and the app gives repeat travelers one place to see every plan they've bought. That convenience has a real cost built into it, but for some travelers it's worth paying for.