Khan Academy describes a free learning platform with courses across subjects, including mathematics, designed to support practice and skill development.
Chalkline's listing describes question-led tutoring from photographed problems and worked analogies. It states that full worked solutions in the app are available through a parent or teacher unlock.
Khan Academy describes a free learning platform with courses across subjects, including mathematics, designed to support practice and skill development.
| Decision | Chalkline | Khan Academy |
|---|---|---|
| Starting point | A photographed problem and guiding questions, per listing | A course or skill within a broader learning platform |
| Useful interaction | Work through the next step of a specific problem | Build and practice concepts across a learning path |
| What to check | Whether you can explain the method afterwards | Whether practice transfers to a similar new problem |
These workflows can serve different moments in learning. Chalkline's listing emphasizes questions around the problem in front of you; Khan Academy provides structured courses and practice. Use either in a way that leaves you able to solve and explain a similar problem independently. This browser fraction lab offers an optional worked explanation and is not the app's parent-protected student interface.
Comparison based on current official descriptions, not hands-on testing of the competing product. Prices, subscription eligibility and feature availability can change.
Fractions keep their meaning when the numerator and denominator are handled together. Enter two fractions to add, subtract or multiply, inspect the unreduced result and its simplification, and compare their relative magnitudes. Arithmetic uses exact integers rather than floating-point guesses.
The diagram shows relative magnitudes, not exact partitions of a whole. Signed fractions are supported, and denominators cannot be zero. Very large values can remain exact in the calculation while being too large for a useful browser graphic.
Inputs are processed in this page. Nothing is submitted to the app or a business. Download a result to keep it; this page does not automatically save your work.
This browser lab is an independent educational companion, not the app's protected student workflow. It deliberately offers an optional explanation and does not authenticate a parent or enforce the app's solution restrictions.
Exact fraction arithmetic and relative-magnitude visualizer
Why adding fractions needs a common denominator
Understand fraction reduction without changing the value
Explore signs when adding, subtracting and multiplying fractions
Chalkline vs Khan Academy: problem guidance and structured practice
Chalkline's listing describes question-led tutoring from photographed problems and worked analogies. It states that full worked solutions in the app are available through a parent or teacher unlock.
View Chalkline on the App StoreThe current listing requires iOS 26.0 or later. Some features have additional device requirements. Check the listing and purchase screen for current availability and terms.