Captchainbox vs LongTerMemory

Set a price for unknown senders to reach your Gmail inbox. Trusted contacts get through normally, and you choose where 90% of the post-Stripe amount goes.

Master any subject with AI question-answer generation and spaced repetition.

About Captchainbox

Set a price for unknown senders to reach your Gmail inbox. Trusted contacts get through normally, and you choose where 90% of the post-Stripe amount goes. Captchainbox - Make unknown senders pay to reach you . We build a trusted contacts and accounts list for you. Unknown senders are held safely and receive a pay to deliver link. The sender pays the price you set and their message is delivered. Connect Stripe to pay yourself, or direct future proceeds to the Internet Archive or the Electronic Frontier Foundation.

About LongTerMemory

Master any subject with AI question-answer generation and spaced repetition. Our AI builds a custom spaced-repetition plan to help you score 90%+ on exams and professional certifications. A quick overview of how LongTerMemory helps you study smarter and retain more. Both are one-time purchases; no subscriptions, no recurring charges. You can renew after 4 months to keep your data if you postpone your exam. You can literally forget you paid and nothing will happen to your credit card.