Chalkline: Homework Tutor

It won't give you the answer

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Point it at the problem and it asks you a question back. Never the answer — not on the fourth try, not if you say it's already handed in. Photomath will hand a student the answer and charge them for the steps. Chalkline will not hand over the answer at any price, and the steps were never the paywalled part. IT ASKS, IT DOESN'T TELL Point the camera at the problem. You get a question back, then a narrower one, then a worked analogy on a parallel problem. The refusal holds in four enforced layers — not a system prompt that folds when a student says the assignment is due in ten minutes. We tested that exact sentence. It holds. GROWN-UPS GET THE SOLUTIONS A parent or teacher unlocks full worked solutions with Face ID. That door does not exist on the student side of the app, so there is nothing to find, guess or screenshot around. THE PHOTO STAYS ON THE PHONE The question is read off the page on this iPhone. The image and the text are not uploaded. IT SHOWS THE WHOLE ROUTE Arithmetic, algebra, geometry, trigonometry, calculus, statistics and word problems, with the concept named at each turn — so what you leave with is the method, not a copied line. WHAT IT COSTS Photomath Plus is about $5 a month billed annually, and its own reviews say the quiet part: "now have to pay to check the steps." Chalkline is $4.99/month, or $39.99/year — $3.33/month, a third cheaper, with nothing held back behind a second paywall. That includes 388 problems a month. WHAT WE DON'T DO • No credits, no coin packs, no consumables — not in this app or any Lumen app. • You are never charged for a request that fails. • No weekly subscription. • No trial that quietly turns into a charge. The trial is seven days, and the date it ends and the price it becomes are both on the paywall before it starts. • No ads, ever, in an app a child uses. For parents: Chalkline is built so that the fastest route through it is learning the material. That is not a marketing line, it is the constraint the whole app is written around. One of 31 Lumen apps. The price is on the screen before you spend, and a failure is free. Privacy Policy: https://lumen-api-oj1s.onrender.com/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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The developer, Rohan Arun, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

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Information

Seller
Rohan Arun
Size
3.7 MB
Category
Education
Compatibility
Requires iOS 26.0 or later.
  • iPhone
    Requires iOS 26.0 or later.
  • Mac
    Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 26.0 or later.
Languages
English
Age Rating
4+
In-App Purchases
Yes
  • Chalkline Annual $39.99
  • Chalkline Monthly $4.99
  • Learn More
Copyright
© 2026 Rohan Arun
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