Ostrol
Ostrol: A web math solver with multiple input formats and separate symbolic checks. Ranked #33 of 68 in Math Solver Apps by our editors (6.0/10); pricing: Free plan; best for learners and educators managing web-based math work.
At a glance
- Editor score6.0 / 10
- PricingFree plan
- Best forLearners and educators managing web-based math work
- Free planYes
- Paid fromFree
- Step-by-step explanationsYes
- Facts checked19 Sep 2026
Where it wins
- Accepts typed problems, screenshots, photos, and PDFs
- Explains solutions step by step and shows verification states
- Private solution library; school tools include classes and assignments
Where it doesn't
- Limited to two free solves each month
- Self-serve Mini and Pro plans are planned, not currently available
- Works on the web; offline operation and handwriting recognition are not verified
Our verdict on Ostrol
Ostrol is a browser-based math solver for learners and educators who want explanations alongside answers. It accepts typed or pasted problems, screenshots, photos, and PDF uploads. Its stated subject coverage ranges from arithmetic through multivariable calculus and includes linear algebra, statistics, probability, discrete math, geometry, number theory, and word problems. That breadth, together with school assignment tools, makes it relevant to both individual study and structured classroom workflows.
A notable distinction is the separate symbolic verification check. Ostrol can show a result as verified, unverified, unverifiable, or a mismatch, giving learners and educators a visible signal to consider alongside the step-by-step explanation. Signed-in users can save solutions to a private library, while the formula sheet builder and PDF and image exports support retaining or sharing work. The value here is not just accepting several kinds of input, but pairing worked explanations with a check status and ways to organize results.
The Free plan includes two solves each month, step-by-step solutions, and visible verification states. Mini and Pro are described as planned access tiers rather than currently available self-serve plans; their listed additions include photo/OCR input, formula sheets, and PDF/image exports, with Pro also listing level-4 deep reasoning. Schools includes organization roles and invitations, classes and assignments, CSV roster import, and visible verification states. Ostrol is a fit for users whose work can happen in a browser and who value checked, stepwise solutions or school workflows. Those needing more than the free solve allowance today, or a workflow outside the web, should consider alternatives.
Your product? Our editors can test Ostrol in depth and publish a review, labelled as paid · from $149/mo →
Ostrol pricing
All 4 Ostrol plans and prices →
Ostrol fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Photo input | Yes |
| Handwriting input | Not verified |
| Step-by-step explanations | Yes |
| Subject coverage | Broad |
| Platform coverage | Web |
| Offline mode | Not verified |
| Deployment | Cloud |
| Platforms | Web |
| Pricing | Free plan (source) |
| Website | ostrol.com |
| Facts checked | 19 Sep 2026 |
Alternatives to Ostrol
- Maple CalculatorA broad mobile solver with camera and handwriting input, plus offline graphing.9.4
- SymbolabA broad math study tool pairing worked solutions with practice, graphing and photo input.9.2
- GeoGebraA broad, free mathematics toolkit with adaptive practice, classroom tools, and offline apps.9.1
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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