Free browser-based cognitive training tools from Quartenson
Free Schulte Table Trainer
Find the numbers in order
Focus • Scanning • Speed
Goal: Cleaner 5x5 rounds with fewer mistakes
Practice Schulte tables online with a simple browser grid. Choose 3x3 through 7x7, track time and mistakes, and use pause, shuffle, and keyboard controls for quick focus sessions.
Start Free TrainerVisual Search Test
Find the target among distractors
Speed • Accuracy • Focus
Goal: Faster target spotting with better accuracy
Find one target among similar symbols, letters, or numbers. Complete ten short rounds and track median response time, accuracy, and clean results.
Start Visual Search TestVisual Memory Test
Remember sequences or patterns
Memory • Focus • Levels
Goal: Better visual sequence and pattern recall
Choose ordered sequence or 3-second pattern recall, progress through levels, choose difficulty, track your best level, and compare recent local sessions.
Start Memory TestStory Chain Memory Trainer
Link items into one connected story
Build • Recall • Repair
Goal: Recall a short ordered list through connected links
Build a connected story for 4 to 8 items, hide the list, recall it in order, identify the first broken link, and retest after focused repair.
Start Story Chain TrainerPeg System Memory Trainer
Link numbered pegs to temporary targets
Review • Recall • Repair
Permanent Peg System positions
Goal: Retrieve a short target list by numbered position
Learn 5 or 10 permanent memory pegs, attach a generated or custom list, test positions in random order, repair weak associations, and retest for free.
Start Peg System TrainerChunking Memory Trainer
Group, recall, and reconstruct
Meaningful groups • Exact order • Repair
Meaningful groups
Goal: Recall an ordered list through meaningful groups
Practise 6, 9, or 12 words, digits, or private custom items. Build useful groups, hide the list, reconstruct every position, compare chunks, and repair weak groups.
Start Chunking TrainerPeripheral Awareness Trainer
Notice brief off-centre targets
Awareness • Accuracy • Focus
Goal: Off-center awareness while holding focus
Keep attention near the centre while noticing brief off-centre targets. Complete a dual task and review central, peripheral, and combined accuracy.
Start Awareness ExerciseReaction Time Test
Respond to one visual signal
Median • Fastest • Spread
Goal: Response-speed measurement for one visual signal
Wait for an unpredictable visual signal, then respond as quickly as you can. Choose 1 to 10 trials and review your median, average, fastest time, and false starts.
Test Reaction TimeMove from quick browser practice into deeper tracking or supporting guides.
Train Schulte tables on Android with session history, pace patterns, heatmaps, achievements, and weekly progress review.
Learn how Schulte tables work, why the classic 5×5 grid is used, how beginners should practise, and try a free online trainer with timing and mistakes.
Learn the correct Schulte table routine for beginners: choose a grid size, practise clean 5×5 rounds, avoid rushing, and track time with accuracy.
Quartenson tools are designed for quick, practical sessions that run directly in the browser. The current tools cover visual scanning, visual memory, mnemonic practice, response feedback, and short sessions that do not require an account.
The free Schulte table trainer supports multiple grid sizes, time and mistake tracking, pause controls, optional shuffle-on-click behavior, and keyboard shortcuts for quick sessions. It is useful when you want a short focus reset, a visual scanning exercise, or a simple way to try Schulte tables before using the dedicated mobile app.
The Visual Search Test adds a different target-finding exercise: find one target among similar distractors across ten short randomized rounds, then review median response time, accuracy, and clean results.
The Visual Memory Test asks you to remember ordered cell sequences or 3-second cell patterns and progress through levels while saving only local history and best level data.
The Story Chain Memory Trainer guides you through building a connected story for 4 to 8 items, hiding the source, recalling the exact order, repairing the first broken link, and retesting the same list.
The Peripheral Awareness Trainer uses a brief dual task: identify a centre line and report where an off-centre target appeared, then compare accuracy and timing across the same setup.
The Reaction Time Test measures a simpler one-signal response task. Wait for an unpredictable visual signal, choose 1 to 10 measured trials, and compare median, average, fastest time, response spread, and false starts on the same setup.
If you are new to the exercise, start with the beginner guide to Schulte tables before your first round.
For longer-term tracking, history, heatmaps, and review insights, explore Quartenson: Schulte Tables. You can also read the Schulte table practice guide to learn how to train without rushing or building poor habits.
