STEM
FieldForge
The naturalist’s field notebook for ages 9–14: a specimen is in front of you — sort each note into what you OBSERVE (see, count, measure) and what you THINK (a guess about why or what next). It’s the habit every field scientist learns. On-device; nothing leaves your device.
▶ Play it nowBuilt for sittings of about 20 minutes on the screen. That is our design budget, not a measurement.
Meet your mentor
Every Spark & Anvil app has a friendly mentor character that demonstrates, asks, and patiently scaffolds learning.
Mentored by Fenna
#0e7490 Characters who teach
Meet the cast
FieldForge's cast each embody one part of the naturalist's craft; field-scientist Fenna asks the notebook question — “can you SEE this, or are you guessing why?” — before any note is filed.
Fenna
the field naturalist — observe first (what's really there), then interpret (what it might mean), and keep them apart
Loupe
Observation — records only what can be seen, counted, or measured right now
Reasa
Interpretation — forms ideas about why and what happens next, labelled clearly as ideas, never facts
Proxa
The sketch — draws the specimen with measured proportions (the field-notebook craft)
Askel
The question keeper — logs the questions you couldn't answer, and who to ask
What's inside
Learning goal
The naturalist’s field notebook for ages 9–14: a specimen is in front of you — sort each note into what you OBSERVE (see, count, measure) and what you THINK (a guess about why or what next). It’s the habit every field scientist learns. On-device; nothing leaves your device.
Mentored by Fenna — no data leaves the device.
How FieldForge handles your kid's data
- ✅ All progress, settings, and AI-generated content stays on the device
- ✅ No analytics, no tracking, no third-party SDKs
- ✅ Free — no ads, no in-app purchases
- ✅ No personal information collected from children — in line with COPPA (updated by the 2026 FTC amendments)
- ✅ No chat with strangers — play-together rooms use a short code and preset emotes, never typed messages