MobyMax
8.9#2 in math learning appsFrom $6.95 a yearFree planAndroidiOSWebmacOS
VisitMobyMax vs Principia
What both publish
| Fact | MobyMax | Principia |
|---|---|---|
| Curriculum | MobyMax says it has 115 modules covering kindergarten through eighth grade. | The curriculum has 8 tiers and 93 concepts, from Numbers & Fractions through Calculus II & Proofs. |
| Free plan | Yes | Yes |
| Integrations | Automatic rostering options include Clever and ClassLink; Google Classroom credentials can be used to sign in, and CSV import is also available. | The privacy policy names RevenueCat for subscription entitlements and Supabase for cloud storage and progress syncing for paid subscribers. |
| Paid from | 7.99 | 6.99 |
| Privacy | MobyMax says it complies with COPPA and FERPA and does not collect students’ personal home addresses, Social Security numbers, or dates of birth. | The company says it does not sell personal information or serve ads, and lists learning progress, account email when provided, and device diagnostics among data it may collect. |
| Purpose | MobyMax helps teachers find and fix learning gaps for K–8 students. | Principia teaches mathematics from fractions through college calculus, emphasizing the reasoning behind formulas. |
MobyMax plans
- FreeFree
- Family$7.99 a month
- MAX Schoolwide License$4,795 a year
- MAX Districtwide License—
- Teacher free versionFree
- Free educatorFree
Principia plans
- ExplorerFree
- Principia Pro$49.99 a year
- Principia Pro Monthly$6.99 a month
- Principia Pro Annual$49.99 a year
Pick MobyMax if…
MobyMax suits K–8 teachers and administrators who need assessments, adaptive lessons, and progress monitoring. Its stated audience also includes parents, students, and homeschool families.
Pick Principia if…
You want what its maker publishes above — check its page for the details.