eSIMThunder vs eFlexSim
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
eSIMThunder
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Stay connected wherever you travel with Esim Thunder — your simple and affordable way to get mobile data around the world. Whether you're traveling for business, exploring a new destination, or taking a well-deserved vacation, Esim Thunder gives you access to reliable eSIM data plans in 200+ destinations. WHY ESIM THUNDER? • Global Coverage — Get connected across 200+ countries and destinations. • No Physical SIM — Download your eSIM directly to your compatible device. • Instant Connectivity — Get mobile data without visiting a store or changing your physical SIM. • Affordable Data Plans — Choose a plan that fits your destination and data needs. • Easy Setup — Purchase your plan, install your eSIM, and connect in just a few simple steps. • Travel Without Roaming Hassles — Stay connected while avoiding expensive traditional roaming charges. • One App, Global Connectivity — Manage your eSIM plans and stay connected from anywhere. TRAVEL SMARTER From international business trips to weekend getaways, Esim Thunder helps you stay connected without the hassle of physical SIM cards or complicated roaming plans. Choose your destination, select your data plan, install your eSIM, and stay connected wherever your journey takes you. Your journey starts with a connection. Esim Thunder keeps you connected.
eFlexSim
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Travel without the roaming bill. eFlexSim gives your phone mobile data the moment you land. Choose a plan, pay, and install — it takes about a minute, and there is no physical SIM to swap, lose, or queue for. WHERE IT WORKS Data plans for 204 countries and 10 regional bundles, plus global plans that follow you across borders on a single eSIM. Plan lengths run from a few days to a full year, so a weekend city break and a six-month posting are both covered. HOW IT WORKS 1. Pick your destination and a plan that fits the trip. 2. Pay in the app. 3. Install the eSIM — a QR code or a single tap, depending on your phone. 4. Land, switch it on, and you are online. Your normal number stays exactly where it is. The eSIM carries data only, so calls and messages on your usual line are untouched, and you can keep your home plan active alongside it. BUILT FOR ACTUAL TRIPS - Check compatibility before you buy — the app asks your phone directly whether it supports eSIM, rather than guessing from a list of model names. - Watch your usage. See how much data is left and how long the plan runs, without hunting through a carrier app. - Top up mid-trip. Extend a plan that is running low instead of starting over. - Get a low-data warning before you run out, at a threshold you choose. - Keep your plans offline. Installed eSIM details stay readable with no connection — which matters precisely when you have none. - Pay with a card or Apple Pay, and keep a wallet balance for the next trip. SUPPORT Real help from real people, in the app. If an install goes wrong we will tell you what actually happened and how to fix it. eSIM requires a compatible, carrier-unlocked device. eFlexSim checks this for you before you buy.
Screenshots
Verdict
eSIMThunder and eFlexSim are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | eSIMThunder | eFlexSim |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 47 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | HEXATUNE LLC | Top Explore pte Limited |
In-app purchases
eSIMThunder
No in-app purchases
eFlexSim
No in-app purchases








