Comparison

OpenSim vs eSIM Ahora!

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OpenSim

Features
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Buy prepaid mobile data for your next trip with OpenSim. Choose from our country and regional travel eSIM plans, purchase in the app, and manage your eSIM and data in one place. OpenSim was previously known as Roaming eSIM. CHOOSE DATA FOR YOUR TRIP • Buy country and regional eSIM data plans. • Choose a data allowance and validity to suit your trip. • View your purchased eSIMs and follow the installation instructions. • Manage your data and top up plans where supported. GET STARTED 1. Check that your device supports eSIM and is carrier-unlocked. 2. Choose a plan for your destination and travel dates. 3. Review its coverage, included services and activation rules before payment. 4. Follow the plan's installation instructions while you have an internet connection. 5. Select your travel eSIM for mobile data and follow the connection guidance for your destination. KNOW BEFORE YOU TRAVEL Activation rules vary by plan. Depending on the plan, validity may begin at purchase, installation or the first connection to a supported network. Check the activation terms before you buy or install. Top-ups are available only for supported plans. Coverage, network availability and speeds depend on the destination, plan and device. If you keep your home SIM active, your home carrier may still charge for calls, texts or data. Check your phone's SIM and roaming settings before you travel. Use your travel data for maps, messaging, internet calls, transport apps and other online services. NEED HELP? Find support in the app or visit https://www.getopensim.com/esim/support. Website: https://www.getopensim.com Privacy policy: https://www.getopensim.com/privacy-policy Terms: https://www.getopensim.com/terms-and-conditions

About

eSIM Ahora!

Features
Read full description

eSIM Ahora gives you mobile data abroad without a physical SIM or a surprise roaming bill. Pick a destination, buy a plan, and the eSIM installs straight onto your iPhone — usually in under a minute. WHY ESIM AHORA • No physical SIM — install digitally and keep your home number active. • No roaming bills — you see a fixed price before you pay. • Ready before you land — buy and install in advance, activate on arrival. • 190+ countries, from single destinations to regional packs. • 10% back on your first eSIM, credited to your wallet once it activates. HOW IT WORKS 1. Browse plans by country or region — no account needed to look. 2. Choose the data and validity that fit your trip. 3. Pay securely; your eSIM arrives in the app, usually within seconds. 4. Tap Install — iOS adds the cellular plan for you. WHILE YOU TRAVEL • Top up an eSIM without reinstalling it. • Turn on auto top-up and your plan renews itself before the data runs out. • Track what's left, and how long it lasts, at a glance. BUILT FOR TRAVELERS • Clear pricing with no hidden fees. • Spanish factura with NIF and VAT breakdown, emailed on request. • Wallet balance, promo codes and a referral program. • Bought through our Telegram bot before? Connect it and your eSIMs appear here. • In-app support whenever you need a hand. Travel connected — no shop, no SIM swap, no contract.

Screenshots

OpenSim4 screens
eSIM Ahora!4 screens

Verdict

The call

OpenSim and eSIM Ahora! are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

OpenSim ships an update fortnightly, eSIM Ahora! every 2 weeks. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

ScorecardNo meaningful differences
OpenSim versus eSIM Ahora!: the parameters behind the verdict, then further details
ParameterOpenSimeSIM Ahora!
PriceFreeFree
Update frequencyFortnightlyEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone
Requires iOS16.0 — better17.4
Further details — not scored
Size87 MB60 MB
Age rating17+4+
DeveloperROAMINGESIM LDATimur Akhtyamov

In-app purchases

None

OpenSim

No in-app purchases

None

eSIM Ahora!

No in-app purchases

Questions

Is OpenSim free?
OpenSim is free to download, with no in-app purchases.
Is eSIM Ahora! free?
eSIM Ahora! is free to download, with no in-app purchases.
Do OpenSim or eSIM Ahora! have ads?
Neither OpenSim nor eSIM Ahora! shows ads.
Which is updated more often, OpenSim or eSIM Ahora!?
OpenSim ships an update fortnightly, and eSIM Ahora! every 2 weeks. Most recently, OpenSim was updated on October 28, 2026 and eSIM Ahora! on October 24, 2026.

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