About
About Lempart Flex
Lempart Flex sells travel eSIMs that let you choose two things: the country your connection exits through, and the speed you keep after your daily full-speed data. Every plan shows its full price, and destination pages compare our prices with the best-known travel eSIM apps, with the date they were checked.
Why we exist
Roaming is priced to punish you for forgetting to switch it off, and most travel eSIMs are sold as one package at one price. We think a traveller should see the whole shelf and the whole price, and decide for themselves.
What we offer
Single countries, regional bundles for trips that cross borders, and plans you can buy for somebody else. Data only: plans do not include a phone number, calls or SMS. Speeds and coverage depend on the local mobile networks in each destination.
Every plan states the same facts
Before you pay, every plan on the shelf says these, in the same words and the same order.
| Field | What it tells you |
|---|---|
| Destination | The country or region, and every country a regional plan covers. |
| Days | How long the plan lasts, and when its days start. |
| Data | Unlimited, or the amount of data included. |
| Speed | How much data runs at full speed each day, and the speed after that. |
| IP exit | The country where your traffic reaches the internet. |
| Total price | The whole price, shown before you pay. |
| Checked date | A comparison with another shop names its source and the day it was checked, and comes down when that is too old. |
Keep more of your money for the trip.
| Lempart Flex · Basic | Lempart Flex · Enhanced Speed | Airalo | |
|---|---|---|---|
| Country | United States | United States | United States |
| Total price (USD) | $18.99 | $28.99 | $68.00 |
| Duration | 30 days | 30 days | 30 days |
| Unlimited data | Yes | Yes | Yes |
| Full-speed data each day | 500 MB | 1 GB | 5 GB |
| Speed after that | Up to 512 kbps | Up to 1 Mbps | Up to 1 Mbps |
For 30 days of unlimited data in the United States: Basic is $49.01 less and Enhanced Speed is $39.01 less.
Prices in US dollars, checked on September 21, 2026 on lempart.app and Airalo. The plans are not identical: the Airalo plan includes more full-speed data each day. Enhanced and the compared Airalo plan continue at up to 1 Mbps; Basic continues at up to 512 kbps. Source
What we believe
The cheapest plan that covers your trip sits on the same shelf as the dearest one, and it is marked when it is the better deal. We would rather you came back next trip than spent more on this one.
Every price is in US dollars and shown in full before you pay: no activation fee, no card surcharge, and no "from" price that becomes something else at the checkout.
Buying needs no account and no name. We do not sell or share personal data, and we ask for as little of it as a purchase can be made with — the email address is optional.
Support is a human being reading what you wrote, usually within one working day. No phone tree, and no chatbot pretending to be somebody.
Company facts
| Legal operator | Lempart LLC · 30 North Gould Street Ste R, Sheridan, WY 82801, United States |
|---|---|
| Contact | support@lempart.app · +1 646 291 9266 · We usually reply within one working day. |
| Policies | Terms of Service · Privacy Notice · Refund policy |
Useful questions
View all help articles →What does unlimited data mean?
Your data keeps working for every day of the plan: there is no total allowance to run out. Each day includes an amount at full speed — 500 MB on Basic, 1 GB on Enhanced Speed — and after that data continues at the speed the plan states, up to 512 kbps or up to 1 Mbps, until the next day begins. Every plan shows its own numbers before you pay.
Will it work on my phone?
Your phone needs to support eSIM and must not be locked to one carrier. Most recent iPhone, Google Pixel and Samsung Galaxy models support eSIM, but some models sold in certain countries do not — check your phone’s settings before you buy, because an eSIM installs once.
When do my days start?
For most plans, when the eSIM first connects to a network at your destination, not when you buy it. The plan page says so where a plan works differently.
Will my own number keep working?
Yes. The eSIM is data only: your number stays on your own SIM for calls and texts, at your own carrier’s usual rates. Turn off data roaming on your home SIM so the travel eSIM carries your data.
Do I need an account or an app?
No. You choose a plan on the website, give an email address and pay; the eSIM arrives by email with its QR code. No Flex app or account is required.
How can I pay?
By card, Apple Pay, Google Pay or cryptocurrency — which of these you see depends on your country and device. We charge the US dollar price shown before you pay, whichever you choose; your bank may add its own currency-conversion fee.
Can I get a refund?
A plan whose eSIM has never been installed is refunded in full on request. Once the eSIM is installed, the plan is not refundable, with two exceptions: a right of withdrawal the law gives you, while it still applies; and an eSIM that cannot connect to any of the plan's listed networks anywhere in its coverage area because of a fault in the eSIM itself or with the network operator, which we refund in full.
Can I buy one for someone else?
Any plan. You pay, you send them the link, and they install it themselves — no app, no account, no invitation. The link never carries your receipt, your card or your other plans, and it cannot ask for your money back. It is theirs from the moment it is on their phone.