We review and update this article regularly as new information becomes available.
Big Brain AI is a homework-helper app. Photograph a problem and it returns an AI-generated, step-by-step solution, plus a chat-based tutor for follow-up questions. It’s made by developer Tom Voitik. This guide covers what the app does, how its subscription pricing works, and what reviewers actually say about accuracy and billing before you subscribe.
TL;DR: Big Brain AI solves photographed homework problems step by step and offers chat-based tutoring, similar to other scan-and-solve apps in this category. It carries a 4.6/5 App Store rating from 1,500+ reviews, but subscription tiers run $6.99 to $29.99 depending on billing period, and some reviewers report both surprise charges and wrong answers on harder problems. Treat any AI-generated solution as a starting point to check your own work, not a guaranteed-correct answer key.
What Is Big Brain AI?
Big Brain AI works like most scan-and-solve homework apps. Point your camera at a math, science, or other homework question, and it returns a step-by-step solution rather than just a final answer. A chat-based tutor mode lets you ask follow-up questions if a step doesn’t make sense. It’s aimed at students across subjects, with math being the most commonly reviewed use case.
Key Features
- Photo-based solving: point the camera at a homework problem to get a step-by-step breakdown.
- Chat tutor: ask follow-up questions about a specific step or concept.
- Multi-subject support: works across math and other homework subjects, not just one.
Pricing
Big Brain AI’s subscription tiers on the App Store are Weekly Pro at $6.99, Pro Monthly at $9.99, and Pro Yearly at $29.99. Discounted trial pricing is also offered at $1.99 for a week or $4.99 for a month. Several App Store reviewers describe the paywall as more aggressive than expected for a homework app. One reviewer flatly stated they wouldn’t pay for a tool students often assume is free. Check which tier you’re being enrolled in before confirming any trial, since trial pricing typically rolls into the full weekly or monthly rate once it ends.
Accuracy and Safety: What Reviewers Say
Big Brain AI holds a strong 4.6 out of 5 stars from over 1,500 App Store ratings, and third-party sentiment tracker JustUseApp reports 80.2% of surveyed users call the app safe. That same tracker’s own algorithmic safety and legitimacy scores for the app both come back at 0 out of 100. That’s a sharp contrast to the star rating and user sentiment the same tracker also reports. We’re noting both figures rather than picking one, since the gap itself is worth knowing about before you rely on an automated score alone.
On accuracy, reviews are mixed. Some users report real help, including one who said the app helped them work through physics homework. Others report getting incorrect answers on harder problems, including one reviewer who said an answer the app marked correct came back as a D- when graded by a teacher. Use it to check your work or get unstuck, not as a substitute for verifying your own answer before you submit it.
Frequently Asked Questions
Is Big Brain AI free?
The app is free to download, but solving problems requires a paid Pro subscription. Discounted trial pricing is available before it rolls into the full weekly or monthly rate.
Is Big Brain AI accurate?
Mixed. Many reviewers report it working well, especially for math and physics, but others report wrong answers on harder problems. Double-check any AI-generated solution before submitting it as your own work.
Is Big Brain AI safe to use?
Reviewer sentiment and the App Store rating are both strongly positive, though a third-party tracker’s automated safety score for this app is notably low. There’s no reported data breach or security incident behind that score; it appears tied to how the tracker weighs the app’s billing model.
Can I cancel my Big Brain AI subscription?
Subscriptions are managed through your Apple ID, the same as any iOS app subscription. Cancel through your device’s subscription settings before the next billing date to avoid being charged again.
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Bottom Line
Big Brain AI works like most scan-and-solve homework apps. Its real user base mostly rates it well, though a small but vocal group reports billing surprises and wrong answers. Try the discounted trial before committing to a full-price tier, and watch when it converts to the regular rate. Treat every solution as something to verify rather than copy directly.
