StrideMind

Browse every camp, any order.

Every camp opens directly, in any order — the badge just shows how far you've cut that camp's gem. Answer by voice, or unlock touch choices.

Mountains
4
Camps
11
Sample prompts
192
Practiced
0

Expedition packs

Bring your own cards

Any Anki deck (.apkg). Imported on this device and available offline. If enabled, encrypted backups include your cards and imported audio. Scheduling is FSRS: due cards queue into your next run and every review still earns altitude.

Keeps the first audio attachment on each card’s front for playback during review. Turn off to save space and use text-to-speech instead. This does not record your microphone or change diagnostic recording.

Arithmetic

From clean place value to fluent operations.

0 prompts practiced
01ArithmeticAddition, subtraction, multiplication, and division — one continuously adaptive skill.Continuous · starts easyReady—

Mathematics

Formulas and patterns held as one spoken thought.

0 prompts practiced
01Geometry formulasRecall the compact formulas behind common shapes.Foundation · continuousReady0%02Geometric sequencesFind ratios, next terms, and compact finite sums.Building · continuousReady0%03Derivatives and integralsRecall compact power, exponential, and trigonometric rules.Stretch · continuousReady0%

Calendar math

Memorize the codes with flashcards. Practice the calculations on an adaptive ladder.

0 prompts practiced
01Weekday calculationsStart with supplied codes, then calculate current-year dates, nearby years, and other centuries.Level 1 of 5 · Given codes · days 1–7Ready0%

Calendar code flashcards

Month codes, century codes, weekday numbers, and leap-year rules. 34 cards in Anki mode, with spaced reviews separate from calculation difficulty.

Open flashcards
How the month and century codes work

Gregorian month-offset method, not Conway's Doomsday anchors. Use these base codes all year:

January
0
February
3
March
3
April
6
May
1
June
4
July
6
August
2
September
5
October
0
November
3
December
5

1900s = 0 · 2000s = 6 · 2100s = 4 · 2200s = 2 · 2300s = 0. The century cycle repeats every 400 years.

Year code = the last two year digits + their whole-number quotient on division by 4, then the remainder modulo 7.

Weekday = (day + month code + century code + year code − leap correction) modulo 7.

Subtract 1 for January or February in a leap year only. A year is leap if divisible by 4, except century years must also be divisible by 400: 2000 is leap; 1900 and 2100 are not.

0 = Sunday · 1 = Monday · 2 = Tuesday · 3 = Wednesday · 4 = Thursday · 5 = Friday · 6 = Saturday

February 29, 2024: 29 (day) + 3 (month) + 6 (century) + 24 + 6 (whole quarters) − 1 (January/February in a leap year) = 67. Remainder 4 after division by 7: Thursday.

All generated dates use the Gregorian calendar, including historical dates before some countries adopted it.

Planning

Choose a route, build an engine, and recover when a plan goes sideways.

0 prompts practiced
01Planning practiceA mixed route through seven planning skills, adjusted to your evidence.Level 1 of 10 · Two-step foundationsReady0%02Planning expeditionsSearch resource and investment routes before you commit.Level 1 of 10 · Two-step foundationsReady0%03Tile draftPredict a rival's pick, then draft a route through a shared supply.Level 1 of 10 · Two colorsReady0%04Production workshopWork backward from a target rate to inputs and whole buildings.Level 1 of 10 · One recipeReady0%05Vineyard workersForecast occupied spaces and plan a worker-placement sequence.Level 1 of 10 · Two workersReady0%06Uncertainty labForecast real chances, then choose under risk, draws, or rival uncertainty.Level 1 of 10 · Two-step foundationsReady0%
Think several moves aheadA short guide to searching routes and keeping track by ear.