Terms of Service
The terms that apply to the Stemulus app, its subscription and its scan packs.
Last updated: October 2026
1. Service Description
Stemulus provides educational STEM problem solving tools powered by edge AI and programmatic math engines. You must be at least 13 years old to use Stemulus.
2. Subscriptions & Billing
Stemulus Pro is an optional weekly auto-renewing subscription. It includes 100 problem checks or study generations in any rolling seven-day period. Optional 50-credit packs cover additional problem checks and study tools. Current local prices and any eligible offer are shown in the App Store or Google Play before you purchase.
Subscriptions renew automatically until canceled. For purchases through the App Store, manage or cancel through your Apple Account subscription settings; cancel at least 24 hours before the end of the billing period to avoid renewal. For purchases through Google Play, manage or cancel through Google Play subscriptions before your next renewal. The store shows your next billing date and the effect of cancellation. Deleting Stemulus or your Stemulus account does not cancel a store subscription.
3. Accuracy & Verification
While Stemulus employs deterministic programmatic verification, AI-generated outputs are intended for educational and study guidance.
Contact
Questions about these terms: [email protected]
Stemulus is operated by Serious Business Software LLC.