How Braintain Works
Rate each card. Let the algorithm do the rest. A smarter way to build lasting recall.
The learning flow
From setup to mastery—four simple steps to remember better
Create or join BrainPods
Organize flashcards into learning groups for any subject—vocabulary, science, history, or custom topics.
Train with active recall
See the concept and image first. Recall or guess the meaning before flipping to reveal the answer.
Rate each card
After revealing the answer, rate how well you remembered it: Again, Hard, Good, or Easy. That single tap is the input the algorithm needs.
The algorithm schedules your next review
Easy cards come back in weeks. Hard ones return tomorrow. The SM-2 algorithm calculates the optimal interval for each card individually—so you spend time where it matters most.
Cards mature over time
Every card tracks its own progress: New → Learning → Mature. As your ratings improve, intervals grow longer and review sessions get shorter. Your memory compounds.
The four-level rating system
After each card, one tap tells the algorithm everything it needs to schedule your next review.
Again
Completely forgot
Review tomorrow
Hard
Recalled with effort
Review very soon
Good
Recalled correctly
Review in a few days
Easy
Instantly knew it
Review in weeks
The more accurately you rate yourself, the smarter the schedule becomes. Over time, review sessions get shorter as more cards reach “Mature” status.
Cognitive science behind the approach
Memory benefits from active recall—retrieving information from your mind rather than passive rereading. Braintain centers each session on recall: you think before you see the answer.
Spaced repetition (using the SM-2 algorithm) is built into every card: your rating after each review determines the interval before the card appears again. Easier cards get longer gaps; harder ones return sooner. The system adapts continuously to your personal recall patterns.
Combining active recall with spaced repetition and visual anchors creates what researchers call elaborative encoding— multiple pathways to the same memory, which makes retrieval significantly more reliable.
Why images help
Images add a visual anchor to abstract concepts. When you attach a meaningful image to a word or idea, you form a dual encoding: verbal and visual. This makes the memory more retrievable later.
Braintain lets you add images to your cards. Each time you train, you see the image alongside the concept and example, strengthening the link between the visual cue and the meaning. Over time, the image becomes a quick trigger for recall.
Ready to explore everything Braintain offers?
Explore featuresTrain your memory today
A few minutes a day. Lasting recall. Free on iPhone and Android.
No account required to start.