NumberNinja

AccentTraining helps you reduce your accent or master a new one. Voice analysis shows where you deviate from native pronunciation. You practice stress and intonation patterns. Native speakers provide …

ArtVerityChain helps digital artists mint NFTs with embedded provenance metadata, certifying authenticity and creation date on-chain. Creators upload artworks and the app generates immutable records s…

AttentionGym strengthens selective and sustained attention through games that require filtering distractions. You pick targets while ignoring similar looking decoys. Task complexity increases with you…

BalanceBeam trains cognitive balance and divided attention through multi-task games. You juggle three or more cognitive challenges simultaneously. Performance metrics show where you excel and where yo…

BiofeedbackBrain uses heart rate variability and skin conductance sensors to optimize your cognitive training sessions. It pauses games when your stress rises and resumes when you calm down. Real time…

BrainAge measures your cognitive age across eight dimensions and recommends targeted training for your weak areas. It compares your scores to your chronological age. You track improvement month over m…

BrainBoost combines supplements and cognitive training data. It tracks micronutrient intake and cognitive performance. The app predicts which supplements improve your cognition. Users experiment with …

ChronoBrain trains time estimation and temporal reasoning through games where you estimate durations and intervals. You improve your internal clock. The app measures microsecond level accuracy. Musici…

CogniRestore is designed for cognitive recovery after brain injury or aging. It uses gentler progression curves and tracks recovery metrics like reaction time stability. Users work with physical thera…

CogniSpeed targets processing speed through reaction time games and decision-making under time pressure. You race against your own times across 50 different challenge types. The app measures milliseco…

CollegeAdmit helps you position your test scores for college applications. You explore which colleges value your score range. You get early signals about admissibility. Application strategy is persona…

ConjugatorPro teaches verb conjugations through frequent practice with feedback. You master tenses and moods systematically. The app generates thousands of unique sentences so you don't memorize. Visu…

ConversationBot role plays realistic scenarios where you have to speak. It uses voice recognition to check your pronunciation and grammar. The AI responds naturally and asks follow-up questions. You p…

CriticalThink teaches you to analyze arguments and evaluate evidence like standardized tests require. You read passages and answer complex reasoning questions. Explanations show you the correct reason…

CultureNotes teaches cultural context and idioms alongside language. You learn not just what words mean but why they matter. Stories explain historical references and social customs. Users understand …

Curipod is an AI tool for teachers. It generates interactive lessons with polls, word clouds, and writing prompts in minutes. Students join each lesson on their own device. Teachers use Curipod to mak…

DecisionMaker trains decision-making under uncertainty through scenario-based games. You make choices with incomplete information and see outcomes. The system shows you your decision-making biases lik…

DetailedExplanations provides in-depth explanations for every practice question and answer choice. You understand not just the right answer but why other choices are wrong. Concept-focused learning pr…

DiagnosticTest gives you a baseline score before you start studying. It shows you your percentile and which topics to focus on. You then study your weak areas and retake tests to track improvement. Th…

DualNBack is the working memory training game that has the most peer-reviewed research. You track items across two streams simultaneously. Difficulty increases as you improve. The game measures your f…

ErrorAnalysis categorizes your mistakes by type so you fix your thinking patterns. Careless errors, concept gaps, and strategy mistakes are tracked separately. The app helps you focus on the most impa…

FaceReco trains face recognition through games where you remember faces and spot them in crowds. Difficulty ranges from 5 faces to 1,000 faces. You improve recognition accuracy and speed dramatically.…

Flip is a free video discussion platform from Microsoft for classrooms of any age. Students record short video responses to teacher prompts and share them safely with the class. AI-powered captioning …

FocusMode blocks distractions during study sessions. You set a timer and the app blocks social media and games. Break timers remind you to step away. Productive study time is tracked. Students report …

FocusVault builds your attention span through micro-focus sessions paired with meditation breaks. It gamifies concentration with streak tracking and achievement badges. The app measures your focus sco…

GrammarGenius uses AI to personalize grammar instruction to your native language. If you speak English you get different explanations than Spanish speakers. The app explains why you make certain error…

GrammarGuard creates mini-lessons for grammar concepts you get wrong. You write sentences and the app corrects them with explanations. Lessons are spaced so you review weak areas regularly. Over 5,000…

HistoryTimeline makes history visual with timelines, maps, and primary sources. You explore events in context. Interactive maps show how borders changed. Documents and speeches are analyzed. Students …

JEFIT is a strength training app with a large exercise library and workout planner. AI generates weekly plans based on user goals, experience, and available equipment. Users log sets and reps quickly …

Langcorrect is a community writing correction platform. Native speakers review posts written by language learners. AI assistance helps speed up correction and feedback. The platform is free and covers…

LangoTalk is an AI chat tutor for language learners. It runs voice conversations in dozens of languages. Users get instant corrections on grammar and vocabulary. The tool is popular with learners who …

LanguageExchange connects you with native speakers for conversation exchange. You help them with English while they teach you their language. The platform screens partners and tracks your conversation…

LinguaFlow uses immersive storytelling to teach languages in context. You follow characters through scenarios and learn vocabulary and grammar naturally. The app adjusts difficulty based on your compr…

LogicLadder presents logical reasoning challenges that require deduction, induction, and conditional logic. Each puzzle builds on previous knowledge. The platform has 5,000 unique puzzles rated by dif…

MagicSchool is an AI assistant for K-12 teachers. It offers over 80 tools for lesson planning, rubrics, feedback, and IEP drafts. The platform saves teachers many hours each week. Schools and district…

MemoryCascade uses spaced repetition to store information permanently. It learns what you are trying to remember and schedules review at the optimal spacing interval. The algorithm is based on cogniti…

MemoryChampion teaches memory competition techniques like the method of loci and chunking. You can memorize decks of cards in under two minutes. The platform has training from world memory champions. …

MindfulShift combines cognitive training with meditation to reduce mental fatigue. It uses neurofeedback to teach mindfulness. Brainwave sensors show when you achieve deep focus states. Users report 3…

Moodle is the most widely deployed open-source learning management system in the world. Its AI assistants help teachers build courses, draft rubrics, and summarize student progress. Schools can self-h…

NeuroPath delivers personalized cognitive training games that adapt to your performance level. It targets weak memory areas and increases difficulty as you improve. The app tracks neural plasticity ga…

PassMaster teaches test-taking strategies alongside content knowledge. You learn timing techniques, elimination strategies, and guessing patterns. The app simulates test conditions with timed sections…

PatternWise trains pattern recognition and logical reasoning through chess-like puzzles and visual problem solving. Daily sessions take 15 minutes and present increasingly complex patterns. The platfo…

PeakPerformance trains you to perform under pressure. You solve cognitive tasks while under time and stress constraints. Breathing techniques and visualization prepare you mentally. Athletic and acade…

PronunciationPro gives real-time feedback on your pronunciation using voice analysis. You see a visual of your mouth shape and compare it to native speakers. The system measures pitch, stress, and int…

QuizBank has 50,000 practice questions organized by topic and difficulty. Questions include video explanations from test prep experts. You track which question types you get wrong. The platform adapts…

QuoteProfessional creates detailed quotes with photos and explanations. You walk through the job and take photos. Quotes are generated with detailed breakdowns. Customers understand what they are payi…

ReadingPath recommends books at exactly your reading level. You start with graded readers and advance to authentic literature. The app shows word frequency so you know if a book is appropriate. Compre…

ReadSpeed trains reading speed and comprehension through adaptive difficulty texts. It shows words one at a time to remove regression and subvocalization. You increase your reading rate from 250 wpm t…

ReflectionJournal helps you consolidate learning through daily reflection. You write about what you learned and how you will apply it. The app tracks your growth over months and years. Reflection incr…

RiskScorer assigns real-time risk scores to authentication attempts based on user, device, network, and behavioral signals. The platform triggers additional authentication factors for high-risk logins…

ScheduleMaster creates your weekly homeschool schedule accounting for multiple children and subjects. You input how many hours each subject needs. It generates a schedule balancing work and breaks. Yo…

Seesaw is a learning platform used in elementary schools around the world. It combines student portfolios, family messaging, and multimodal activities in one app. AI helpers give quick feedback on stu…

SlangMaster teaches colloquial speech and slang used by native speakers. You learn informal words and expressions that textbooks don't teach. The app shows you when formal or informal speech is approp…

SoundMatch teaches you to distinguish phoneme pairs that your native language doesn't use. It plays two sounds and you identify which is different. The system tracks which pairs are hard for you and r…

SpellingPractice teaches spelling through interactive games and adaptive repetition. Words are grouped by pattern. You hear the word, see it used in context, and spell it. Difficulty increases as you …

Teaser AI lets users chat with AI clones of real matches before deciding to message the real person. The clone learns from each user's profile and questions to mimic their style. It feels like a fun p…

TestAnxietyHelper teaches breathing and mindfulness techniques to reduce test anxiety. You practice these techniques before taking practice tests. Anxiety decreases measurably over time. Users report …

ThinkFast combines timed decision games with real world feedback. You make snap judgments and see immediate consequences. The system measures your decision speed and accuracy. Speed increases from 5 s…

TranslatePal is a context-aware dictionary that shows you how native speakers use words. You search a word and see 50 example sentences from books and movies. The app shows common collocations and syn…

TuneIn teaches you to understand music in your target language. You listen to songs and complete fill-in-the-blank exercises. Lyrics are analyzed for vocabulary and grammar patterns. You learn authent…

Tutor.com is an on-demand tutoring service owned by The Princeton Review. AI-guided matching connects learners with a verified tutor in minutes for most subjects. Sessions happen in a shared browser w…

TutorEva is an AI homework and textbook tutor. It solves problems with step-by-step explanations across college subjects. Students use TutorEva as a private tutor on demand. The tool covers math, scie…

VisuospatialPro trains 3D spatial reasoning through rotation and visualization puzzles. You mentally manipulate objects in space and improve your mental rotation speed. The app tracks improvements in …

VocabRise grows your vocabulary using word games paired with contextual learning. It learns which words you know and which you ignore. Definitions are shown in context sentences first then isolated. U…

WeakAreaFocus identifies your lowest-scoring content areas and creates custom study plans. You focus only on what you need to improve. The app prevents you from wasting time on topics you already know…

WriteCheck analyzes your writing in the target language and gives detailed feedback. It shows you patterns in your errors. You write journal entries, emails, and essays. The platform compares your wri…

WriteHuman is an AI humanizer. It rewrites machine text to sound human and aims to avoid GPTZero, Turnitin, and other detectors. Users shape AI drafts into natural writing. Students and writers use Wr…