Free, on-device learning apps for ages 3–18. Newest apps as they ship. https://sparkanvil.org/apps.xml 2026-08-18T21:12:20-05:00 Spark & Anvilhello@sparkanvil.org CC BY-NC-SA 4.0 https://sparkanvil.org/play/gridforge/ 2026-08-18T21:12:20-05:00 Spark & Anvil

Four ideas, five games, one grid — play Connect-4, Gomoku, Reversi, Dots-&-Boxes, and Hex against a graded AI, and learn the shared primitives (connect, fork, flip, parity) that win them all.

https://sparkanvil.org/play/coderealm/ 2026-08-18T20:07:17-05:00 Spark & Anvil

Program Bit the robot with drag-together command blocks — sequencing, loops, and conditionals — then watch your code run. Plus 16 CS-concept kits.

https://sparkanvil.org/play/cosmosforge/ 2026-08-18T20:07:17-05:00 Spark & Anvil

Watch a star live and die in the Stellar Evolution lab, peer inside a black hole and feel gravity stretch time, climb the Cosmic Distance Ladder, and practice astronomy & astrophysics across 16 kits.

https://sparkanvil.org/play/ethosforge/ 2026-08-18T20:07:17-05:00 Spark & Anvil

Reason through ethical dilemmas, build strong arguments, and see every question through five moral lenses — across 16 kits. No "right" answer is handed to you; the skill is the thinking.

https://sparkanvil.org/play/forceforge/ 2026-08-18T20:07:17-05:00 Spark & Anvil

Predict the physics before it happens — final velocity, momentum, energy, orbits — then a real engine computes it. HS mechanics & more. For teens.

https://sparkanvil.org/play/wellnessforge/ 2026-08-18T20:07:17-05:00 Spark & Anvil

Learn how to look after your body and mind: build a balanced plate, practise saying no, handle a first-aid moment, and find calm. Health facts across 16 kits + hands-on toolkits. On-device, private…

https://sparkanvil.org/play/agoraquest/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Judge a source, steelman the other side, deliberate a values question — where there’s a better answer you find it, where there isn’t you own your reasoning. For teens.

https://sparkanvil.org/play/chronoquest/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Set the Chrono Device and step into history — visit seven eras, build the timeline of the past, and practice world history from ancient rivers to the Moon landing across 16 kits.

https://sparkanvil.org/play/cityforge/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Design buildings that stand and plan fair, green city blocks — choose materials and columns so a building carries its load, and zone a neighborhood so families, shops, and parks make good neighbors…

https://sparkanvil.org/play/civicforge/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Run your town council — deliberate and vote on petitions, balance the budget, and learn how government works across 16 civics kits.

https://sparkanvil.org/play/digquest/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Excavate a stratified dig site and read the layers to date what you find, analyze artifacts by their features to reason out who made them and why, and explore ancient civilizations across 16 kits…

https://sparkanvil.org/play/ensemblequest/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Make music that fits the song in a calm single-player studio, practice the Solo→Pair→Group→Perform teamwork ladder, and work through 16 music + social-skills kits.

https://sparkanvil.org/play/focusforge/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Build focus and study skills the calm way: try short brain workouts in the Strategy Lab (remembering, waiting, switching, planning, starting, sensing time), break big homework into tiny steps, and…

https://sparkanvil.org/play/mapforge/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Build worlds that obey real geography — predict which mountain slope becomes a desert, where a river flows downhill, and which biome a climate grows; see why a Mercator map fools your eyes; and…

https://sparkanvil.org/play/marketquest/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Set a price and watch supply, demand, and equilibrium respond; run market experiments to predict how events move prices; and practice economics, money, and business across 16 kits.

https://sparkanvil.org/play/rupturerepair/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Every friendship frays sometimes — the skill is the repair. Walk the 5-step repair loop (notice the harm → own your part → name the impact → offer a repair → reconnect), learn the ideas behind it…

https://sparkanvil.org/play/mindforge/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Walk through real social moments in the Scenario Navigator, notice your feelings, and build social & emotional skills across 16 kits. On-device, private, no wrong feelings.

https://sparkanvil.org/play/originforge/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Explore knowledge traditions from cultures worldwide — how Aboriginal Australians read the land with fire, how Pacific navigators crossed open ocean by the stars, how the Maya tracked Venus without a…

https://sparkanvil.org/play/coregrealm/ 2026-08-18T19:54:02-05:00 Spark & Anvil

You're the steady one — read where your companion Cyan is on the feelings-wave, choose a calming move that meets them there, and keep a private reflection journal. On-device, gentle, no timer.

https://sparkanvil.org/play/tempcheck/ 2026-08-18T19:54:02-05:00 Spark & Anvil

A gentle daily feelings check-in. Notice how you're doing, take turns reading each other with a friend on one device, and learn to read the signals your body gives — on the four-zone Mood Meter…

https://sparkanvil.org/play/terravoyage/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Become a Clue Compass explorer — read a place’s environmental and cultural clues, name the continent, then track down the exact spot (the compass tells you how far and which way to look) — plus 16…

https://sparkanvil.org/play/venturequest/ 2026-08-18T19:54:02-05:00 Spark & Anvil

Run your first business: set a price and discover why charging more can mean fewer customers but bigger profit per sale, find your break-even point, and predict how a business decision will play out…

https://sparkanvil.org/play/wonderforge/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Watch a science demonstration that looks impossible, guess how it really works before the reveal, then discover the physics or chemistry behind the wonder. Stage your own science show, and practice…

https://sparkanvil.org/play/labsmith/ 2026-08-18T19:33:24-05:00 Spark & Anvil

A hands-on physics lab — predict what happens before the experiment runs: which shot flies farther, which pendulum swings slower, which bulb glows brighter, plus 400 physical-science questions.

https://sparkanvil.org/play/machineforge/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Build with the six simple machines, compute mechanical advantage in the lab, and predict how gear trains trade speed for torque — the engineering behind every lever, pulley and gear.

https://sparkanvil.org/play/medicquest/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Run a friendly clinic: read a patient’s symptoms and vital signs to reason out what’s going on, explore the body system by system, and trace how an outbreak spreads before you choose how to stop it…

https://sparkanvil.org/play/microbelab/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Match antibodies to the microbes they fit, put the immune response in order, and grow a balanced microbiome in the gut, mouth, skin, or soil — plus microbiology, immunity, and microbiome kits. Calm…

https://sparkanvil.org/play/neuralquest/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Learn how AI really works by building it — no coding. Label your own examples and watch a classifier discover a rule (then see the rule and WHY it decides), predict what a recommender serves you next…

https://sparkanvil.org/play/nexusforge/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Systems thinking — connect ecosystems, cities and economies, then predict how a nudge cascades. Spot reinforcing vs balancing feedback loops and watch stocks fill, drain, and snowball, all…

https://sparkanvil.org/play/powerforge/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Build power plants, balance an electrical grid against real demand, and trace energy through every conversion — the science and engineering behind the power that runs everything.

https://sparkanvil.org/play/prismforge/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Bend, reflect, and split light on a virtual optics bench — set a lens, mirror, or prism and watch a real ray-trace, order the electromagnetic spectrum, and mix colors of light, across 16 optics kits.

https://sparkanvil.org/play/saffronlab/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Discover the science behind cooking — predict what heat does to food, master the food-safety Core Four, and practice kitchen chemistry.

https://sparkanvil.org/play/scienceforge/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Design a fair test by choosing what to change and what to measure, run the predict-observe-explain loop, and practice the scientific method across 16 kits.

https://sparkanvil.org/play/tectonicforge/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Explore Earth's engine: tap through the layers from crust to core, name plate boundaries, read a seismograph to locate a quake, predict how a volcano erupts, engineer against hazards, and load a…

https://sparkanvil.org/play/terrawatch/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Gamified citizen science — classify field observations, read real datasets, and practice 16 science kits.

https://sparkanvil.org/play/trailforge/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Wilderness survival — find north by nature, choose the survival priority, build in the right order, and practice 16 outdoor-skills kits.

https://sparkanvil.org/play/waveforge/ 2026-08-18T19:33:24-05:00 Spark & Anvil

See sound as a living wave on an oscilloscope, tune a string to its resonant note, and practice acoustics and wave physics across 16 kits — all in your browser, no mic needed.

https://sparkanvil.org/play/weatherforge/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Step into the weather lab: read a synoptic panel of pressure, humidity, and fronts to forecast tomorrow, give a percent-chance of rain and see how well-calibrated your confidence is, assemble the…

https://sparkanvil.org/play/wildlens/ 2026-08-18T19:33:24-05:00 Spark & Anvil

Become a Species Detective and identify wildlife from its field marks — group, habitat, diet, when it’s active, size — with no camera needed, build each habitat’s food web and see why energy runs out…

https://sparkanvil.org/play/bioforge/ 2026-08-18T19:10:22-05:00 Spark & Anvil

Explore a cell and a body diagram tap by tap, build an ecosystem food web from producer to decomposer, and practice biology from cells to evolution across 16 kits.

https://sparkanvil.org/play/biomeforge/ 2026-08-18T19:10:22-05:00 Spark & Anvil

Build a small living world and keep it in balance. Stock an aquarium or terrarium with producers, consumers, and decomposers in the Biome Builder and watch the balance model react; predict the ripple…

https://sparkanvil.org/play/chemquest/ 2026-08-18T19:10:22-05:00 Spark & Anvil

Run a real chemistry lab in your browser: predict whether a liquid is an acid or a base, then drop the cabbage-juice indicator and watch the color reveal its pH; stack liquids into a density tower to…

https://sparkanvil.org/play/circuitforge/ 2026-08-18T19:10:22-05:00 Spark & Anvil

Build circuits on a virtual breadboard, watch the current flow, code a grid robot with blocks, and wire logic gates — the engineering behind every electronic device.

https://sparkanvil.org/play/climatequest/ 2026-08-18T19:10:22-05:00 Spark & Anvil

Slide the CO₂ level and watch a real (simplified) climate model respond — greenhouse forcing, warming, sea level, and sea ice. Predict the warming before the model reveals it, read climate datasets…

https://sparkanvil.org/play/creaturecare/ 2026-08-18T19:10:22-05:00 Spark & Anvil

Run an animal hospital — predict the diagnosis, choose the care, watch the animal recover — plus 400 animal-science questions.

https://sparkanvil.org/play/curiosityquest/ 2026-08-18T19:10:22-05:00 Spark & Anvil

Explore K–8 science by inquiry: 400 questions across sixteen topics, plus predict-then-observe labs — trace the water cycle, build a food web, and wire logic gates.

https://sparkanvil.org/play/dataforge/ 2026-08-18T19:10:22-05:00 Spark & Anvil

Build data pipelines, chart the story, and test hypotheses on real datasets — plus 16 kits.

https://sparkanvil.org/play/depthquest/ 2026-08-18T19:10:22-05:00 Spark & Anvil

Dive the ocean’s zones — predict how pressure, light and temperature change with depth, match deep-sea adaptations, and practice 16 marine-science kits.

https://sparkanvil.org/play/ecosphere/ 2026-08-18T19:10:22-05:00 Spark & Anvil

Explore Earth as a living web of connected parts. Pull one thread in the Ecosystem Lab — remove the otters, bring back the wolves — and watch the trophic cascade ripple up and down the food chain…

https://sparkanvil.org/play/farmquest/ 2026-08-18T19:10:22-05:00 Spark & Anvil

Tune the soil, water, and season to find what really limits a harvest, then predict which four-season crop rotation keeps a field healthiest before you plant it. Plus 16 kits of agricultural science…