Remember Things Forever

The ultimate solution to simple and efficient memorization

Online Spaced Repetition Flashcards

Includes cards for all countries and capitals of the world!
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Simple flashcard creation on the Mac and PC Flashcard app on Android tablet and iPad Flashcard app on Android smartphone and iPhone


"I can't tell you how much I love your application. I use it constantly. I’m trying to learn one new thing every day, and I think it’s working. I’m using it for everything!"
- Paul Nixon, Managing Director
"It has been a great pleasure using your app to learn my WSC subjects. I sincerely thank you for the excellent work you've done in assisting people to learn effectively and efficiently. May your company continue to flourish and assist more people in their learning."
- Muhammad Rafi Permadi, Student

What is Spaced Repetition?

1. Forgetting Curve

The Forgetting Curve

Humans forget newly learned material in a matter of days (red curve) unless reviewed from time to time (green curves).

2. Spacing Effect

Humans remember items more easily when they are studied a few times spaced out over a long time span than when studied repeatedly in a short period of time.
Wikipedia .

3. Spaced Repetition

Spaced repetition is a learning technique in which items are reviewed in increasing intervals of time to make most use of the spacing effect so that they can be remembered effectively and efficiently. It is especially well suited for memorizing huge amounts of material and keeping them indefinitely in memory.
Wikipedia .


Your Performance at a GlanceNEW !

See how well you've been keeping up with your reviews at a glance with the review heatmap calendar and the remaining-cards history chart.

Review Heatmap Calendar and Remaining Cards History Chart


No installation. No synchronization between devices. Directly access your cards with a simple, modern web application on Android, iPhone, iPad, Mac, and PC.

Memorize Anything

Create your own decks to memorize anything from foreign languages to maps and chemical symbols. Or simply select a deck from the official decks list, which includes decks for the world map, Japanese Kanji, and more. In addition to standard frontside-backside cards, you can also create multiple-choice cards.

Memorize Anywhere, Any Time

The key to memorizing is repetition. Use your smartphone to review your cards in your spare time, anywhere, any time.

Memorize "Super" Efficiently

With Spaced Repetition, you spend time on those that need it, not on the ones you have memorized. Spend the minimium time required to keep things memorized, super efficiently.

Memorize by Writing

Handwritten answer Handwrite your answers directly on screen to precisely test your memory and to help you memorize better. Keyboard input is also supported.

Memorize Maps and Pictures

Card with image Add images to your cards to memorize maps, pictures, and drawings. Create links to images on external sites or upload your own images.

Format Content as You Wish

Card with superscript and subscript Card content is interpreted in a simple yet powerful markup language called Markdown, which allows you to easily create cards with links, bold text, super/sub-script, etc., tailored to your needs.

Create Cards with Ease

Creating cards may be tedious. If you have cards in another system or wish to create cards with other software such as Google Spreadsheet or Excel, simply import them as a CSV file.

Keep up with your Reviews by Receiving Notifications

Receive notifications when you have cards due for review by setting the time of day at which you wish to be notified.

Ace Your Exams

Do last-minute reviews immediately before exams using a special mode for reviewing only the worst-performing cards.