42CodeLens

Pricing

42CodeLens is an interactive environment for learning C — written to help learners study C programming and prepare for the 42-style curriculum. A useful part of it is free. Everything else is one payment.

All prices in US dollars.

Free

Free to use

$0 No account required to browseSign in to save progress

A real part of the curriculum, open to everyone. No trial, no expiry.

  • Shell 00 and Shell 01the full shell modules, exercise by exercise
  • Handbook volumes 0 and 1the opening volumes of the C & UNIX Piscine Handbook
  • Every top-level Labthe interactive labs on the main navigation
  • Official subject PDFspublished openly, and never behind the paywall
Start learning free
Premium

42CodeLens Premium

$15 One-time paymentLifetime access

Personal lifetime access for one 42CodeLens account. Not a subscription — there is nothing to renew and nothing to cancel.

  • Piscine C00 – C13all fourteen modules, exercise by exercise
  • Memorythe stack, the heap, pointers and ownership
  • Libftcontracts, allocation and linked structures
  • Common Corethe project courses beyond the Piscine
  • Handbook volumes 2 – 12the advanced volumes of the Handbook
  • Premium practice and learningthe protected Solving sections
Unlock Lifetime Access — $15

You will be asked to create a free 42CodeLens account first. Premium is attached to that account.

What you are buying

One payment of $15 USD gives the 42CodeLens account you are signed in to permanent access to the Premium material listed above. There is no recurring charge, no renewal date, no trial that converts into a subscription, and no separate fee for future Premium material.

How payment works

Purchases are sold and processed by Paddle.com Market Ltd, which acts as the Merchant of Record and as the authorised reseller for 42CodeLens Premium. Payment details are entered on Paddle's own secure checkout — 42CodeLens never receives or stores your card details.

Premium is granted only after Paddle confirms the payment to the 42CodeLens server. Completing the checkout window is not by itself what unlocks the content, and nothing on your side needs to be done to trigger it.

$15 USD is the price of the product. Paddle calculates any tax that applies where you are and may add it at checkout, so the total it asks you to confirm can be higher than $15. The figure on Paddle’s checkout, before you pay, is the amount that will be charged — 42CodeLens does not compute tax and does not state a rate here, because the rate depends on your location and is Paddle’s to determine as Merchant of Record.

What is not Premium

The official subject PDFs published on 42CodeLens are openly accessible and are not part of the Premium purchase. They are source documents, not 42CodeLens teaching material, and paying for Premium neither unlocks nor restricts them.

Questions

Before buying, read the Terms of Service and the Refund Policy. For anything else, write to support@42codelens.com.