I've used GEO, Airalo, and Holafly on real trips over the past 18 months. Not sponsored reviews, not affiliate-driven recommendations, just actual experience paying full price and testing them in multiple countries. Here's what I found.
Quick Overview
All three are legitimate eSIM providers with millions of users. They're not scams, they work, and they all beat the hell out of international roaming from your home carrier. But they have meaningful differences in pricing, coverage, user experience, and plan flexibility that matter depending on how you travel.
Pricing: The Numbers That Matter
I compared prices for identical scenarios across all three providers as of mid-2026. Prices fluctuate, but the relative positioning tends to stay consistent.
Thailand, 10GB, 7 Days
- GEO: $5.00
- Airalo: $6.50
- Holafly: Doesn't sell limited-GB plans. Their Thailand plan is $6/day unlimited.
Europe (Regional), 10GB, 14 Days
- GEO: $11.00
- Airalo: $13.00
- Holafly: $47 for 14 days unlimited
USA, 5GB, 7 Days
- GEO: $5.50
- Airalo: $6.50
- Holafly: $6/day unlimited, so $42 for 7 days
Japan, 10GB, 14 Days
- GEO: $9.00
- Airalo: $11.00
- Holafly: $47 for 14 days unlimited
The pricing story is clear. GEO is consistently the cheapest for fixed-data plans. Airalo is slightly more expensive but still reasonable. Holafly takes a completely different approach with unlimited data at a daily rate, which makes it significantly more expensive for light-to-moderate users but potentially good value for heavy users.
The Unlimited Data Question
Holafly's big selling point is unlimited data. No worrying about running out, no checking your balance, just use your phone normally. Sounds great on paper. But here's the reality check.
Most travelers use 1-2GB per day. On my Southeast Asia trip, I averaged 1.1GB daily, and I wasn't being particularly careful. So a 10GB plan for a 7-day trip gives you plenty of headroom at $5-11, versus $42-50+ for Holafly's unlimited.
Holafly does make sense if you're a heavy data user who streams video on mobile, does frequent video calls, or works remotely and needs to upload/download large files throughout the day. If you routinely use 3-5GB daily, the unlimited plan could save you money compared to buying multiple data top-ups.
But there's a catch: Holafly's "unlimited" plans often have fair usage policies. After a certain threshold (typically 20-40GB depending on the country), speeds may be throttled. It's still unlimited in the sense that you aren't cut off, but you might go from 50 Mbps to 2-5 Mbps. Read the fine print.
Coverage and Network Quality
All three providers work through partnerships with local carriers. The quality of your connection depends on which local carrier they've partnered with in each country.
GEO covers 190+ countries and partners with major tier-1 carriers in most destinations. In my testing, I consistently connected to the best available network. In Japan, I was on SoftBank. In Thailand, TrueMove H. In the UK, Three.
Airalo covers 200+ countries/regions and also has strong carrier partnerships. They offer both their own "Discover" brand and plans from local eSIM operators. The Discover plans are their in-house product; the others are resold. Quality is generally good, though I noticed slightly slower speeds in Vietnam compared to GEO (15 Mbps vs 22 Mbps in the same location).
Holafly covers 170+ destinations. Slightly fewer countries than the other two, but they cover all the popular tourist destinations. Their network partners are solid in major markets. I had no coverage complaints in Spain, Italy, or Thailand.
App and User Experience
GEO (getesimonline.com): Clean web-based interface. Purchase, installation, and management are straightforward. The QR code delivery is fast, usually instant. Data balance checking is easy through their platform. Support responds quickly.
Airalo: Has a well-designed app for iOS and Android. The app handles everything from purchase to installation to data monitoring. The in-app installation feature (where it installs the eSIM directly without a QR code) works well on newer phones. Their marketplace model means you sometimes see multiple plan options for the same country, which can be confusing but also gives you choices.
Holafly: Also has an app, though I found the interface slightly less intuitive than Airalo's. Their push toward unlimited plans means fewer plan options to choose from, which is actually simpler in some ways. Installation is smooth.
Top-Ups and Flexibility
Running out of data mid-trip happens. How each provider handles it matters.
GEO: You can purchase additional plans and install them quickly. The process is seamless, and new plans activate within minutes.
Airalo: Offers top-ups for some plans directly through the app. Not all plans support top-ups; it depends on the specific product. When available, it's convenient. When not available, you have to buy and install a whole new plan.
Holafly: Since their plans are unlimited, you don't really run out of data. You might run out of days though. Extending your plan means buying additional days, which at $6-8/day adds up fast.
Customer Support
I've contacted all three providers with real issues.
GEO: Response time was under 10 minutes via their support chat. The agent was knowledgeable and resolved my activation issue quickly. They also proactively followed up to confirm it was working.
Airalo: Support is available through in-app chat and email. I waited about 20-30 minutes for a chat response, which isn't terrible but not great when you're standing on a street corner with no data. They resolved the issue, but the process was slower.
Holafly: They advertise 24/7 support. My experience was mixed. Got a quick response once, waited over an hour another time. The support agent's English was fine, but they followed a very scripted troubleshooting flow that made me repeat steps I'd already tried.
Who Should Use What
Choose GEO if: You want the best prices on fixed-data plans, prefer a no-nonsense purchasing experience, and travel to a variety of destinations. Best for budget-conscious travelers and anyone who doesn't need unlimited data.
Choose Airalo if: You like having an app-based experience, want a wide marketplace with lots of plan options, and don't mind paying slightly more. Good for first-time eSIM users who want a polished app to guide them through setup.
Choose Holafly if: You're a heavy data user, hate worrying about data limits, and are willing to pay a premium for unlimited. Best for digital nomads, remote workers on short trips, or travelers who stream a lot of video content on mobile.
My Personal Pick
For most travelers, most of the time, GEO offers the best value. The pricing is consistently the lowest, the coverage is excellent, and the service works reliably. I've used it in 12 countries over the past year without a single failed activation or coverage issue.
That said, competition is healthy, and all three are legitimate choices. The real losers here are airport SIM card kiosks and international roaming plans from traditional carriers. Any eSIM from any of these three providers will save you money and hassle compared to those alternatives.