Academics
GuessTots
How many fish are in the jar - a few, some, or a lot? GuessTots gives your littlest learner a jar full of fish and a fun guess to make, then counts them out loud together to check. It says everything aloud (no reading needed), the fish are big and easy to count, and there is no way to lose - a good guess or a fun count, both are a win. Guessing with a benchmark and then counting is the very first taste of estimation. On-device, no account. Ages 3-5.
▶ Play it nowBuilt for sittings of about 10 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 Countie
#2f8fb3 Characters who teach
Meet the cast
GuessTots' jar friends each embody one move of ESTIMATION - the crew IS the idea (audio-first for ages 3-5). Sip is a few - a small handful you can see at a glance. Gulp is a lot - so many they spill past the top. Fair reminds you a good guess uses a benchmark, not luck: some is right in the middle. Mentor Countie keeps the whole idea: guess with a benchmark first, then count to be sure - counting is how you check a guess.
Sip
A few - a small handful of fish you can see at a glance (subitising)
Gulp
A lot - so many fish they fill the jar to the top
Fair
A fair guess uses a benchmark, not luck - some is right in the middle, between a few and a lot
Countie
guess with a benchmark first, then count to be sure; counting is how you check a guess.
What's inside
Learning goal
How many fish are in the jar - a few, some, or a lot? GuessTots gives your littlest learner a jar full of fish and a fun guess to make, then counts them out loud together to check. It says everything aloud (no reading needed), the fish are big and easy to count, and there is no way to lose - a good guess or a fun count, both are a win. Guessing with a benchmark and then counting is the very first taste of estimation. On-device, no account. Ages 3-5.
Mentored by Countie — no data leaves the device.
How GuessTots 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