Big Brain vs Eureka
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Big Brain
Instantly solve homework problems by taking a photo. Get step-by-step explanations and personalized tutoring via chat. Access a history of all your solved problems across multiple math subjects.
- Photo homework scanning
- Step-by-step explanations
- AI-powered chat tutor
- Problem history
- Multi-subject math support
Read full descriptionHide full description
Big Brain is your 24/7 AI-powered school tutor, offering instant solutions to homework problems with just a photo snap. Get step-by-step explanations, personalized tutoring through chat, and access a comprehensive history of your solved problems. Whether you're tackling algebra, geometry, or calculus, Big Brains user-friendly interface and multi-subject support make learning math easier and more accessible than ever. *AI TUTOR REQUIRES A SUBSCRIPTION. Terms of use: https://aihomeworkhelper.app/terms
Eureka
This AI-powered tutor offers step-by-step solutions for math, science, and geography problems. It allows users to input questions via typing, snapping a photo, or scanning, providing detailed explanations to foster understanding and boost exam readiness.
- Type, snap, or scan math and science problems
- Detailed explanations for complex concepts
- Interactive AI tutoring at your own pace
- Boost exam readiness with practice solutions
- Covers algebra, physics, geography, chemistry, and more
Read full descriptionHide full description
Unlock your potential with Eureka, the all-in-one AI tutor that makes learning engaging, efficient, and fun. Whether you're tackling tricky equations, puzzling over scientific concepts, or exploring geography, Eureka is here to guide you with step-by-step solutions tailored to help you truly understand. Here’s what Eureka can do for you: - Type, Snap, or Scan: Instantly solve math problems, geometry puzzles, and even science questions. Simply input your question, snap a picture, or scan your query for a complete breakdown. - Master Any Subject: From algebra to physics, geography to chemistry, Eureka provides detailed explanations to help you grasp the toughest concepts. - Learn at Your Pace: Our AI tutor offers interactive tutoring, walking you through each problem so you can learn as you go. - Boost Exam Readiness: Practice smarter with customized solutions and explanations to prepare for tests and quizzes. With a premium subscription, you unlock unlimited requests using snap or text inputs. With Eureka, learning doesn’t have to be stressful. Say goodbye to confusion and hello to confidence. Whether it’s homework help or mastering new topics, Eureka empowers you to achieve academic success anytime, anywhere. Terms of use: https://eurekaapp.io/terms Privacy policy: https://eurekaapp.io/privacy
Screenshots
Verdict
The clearest difference is monetization model: Eureka at free with in-app purchases against Big Brain's subscription. Eureka also leads on review sentiment (100% vs 69%). Big Brain's advantage is ratings volume (1.3K vs 13). On price, rating, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Big Brain sells 6 in-app purchases, starting at $1.99 per 7 days and Eureka sells 8 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.6 for Big Brain against 4.5 for Eureka. That said, the two scores are not equally well evidenced: Big Brain has 1.3K ratings behind it against 13, so its average is the more settled of the two. Written reviews are what separate them: 69% of Big Brain's written reviews are positive against 100% of Eureka's.
Big Brain ships an update weekly, Eureka every 4 days. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.
| Parameter | Big Brain | Eureka |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (1.3K ratings) — better | 4.5 (13 ratings) |
| Positive reviews | 68.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 1.3K — better | 13 |
| Update frequency | Weekly | Every 4 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 38 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Tom Voitik | Anastasiia Khovaeva |
Customer experience
Big Brain
Eureka
Bugs and requests
Big Brain
Reported bugs
2 issues- Incorrect test results
- Compatibility issues
Requested features
2 requests- More free features
- Improved accuracy
Eureka
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Big Brain
- Weekly Pro 1.99$1.997 Days
- Pro Monthly 4.99$4.991 Month
- Weekly Pro 6.99 Trial3 Days trial$6.997 Days
Show 3 moreShow fewer
- Pro Weekly 6.99$6.997 Days
- Pro Monthly 9.99$9.991 Month
- Pro Yearly 29.99$29.991 Year
Eureka
- Eureka Premium access$0.997 Days
- Eureka Premium access3 Days trial$0.997 Days
- Eureka Premium access3 Days trial$2.997 Days
Show 5 moreShow fewer
- Eureka Premium access3 Days trial$4.997 Days
- Eureka Premium Access3 Days trial$7.997 Days
- Eureka Premium access3 Days trial$9.991 Month
- Eureka Premium access3 Days trial$14.991 Month
- Eureka Premium access3 Days trial$39.991 Year









