7 Best Free AI Apps for Studying STEM Subjects

In recent years, artificial intelligence has made impressive strides in reshaping how students learn, especially in the fields of science, technology, engineering, and mathematics (STEM). From solving complex equations to simulating chemical reactions, AI-powered educational tools are making once-challenging concepts more accessible, personalized, and engaging.

For students navigating these demanding subjects, access to quality support shouldn’t come with a price tag. That’s why the rise of free AI apps is a game-changer – removing financial barriers while delivering high-quality, on-demand tutoring and study help right from a smartphone or browser.

In this post, we’ll explore 7 of the best free AI apps for studying STEM subjects, with a special spotlight on MeraTutor.ai, a rising platform dedicated to making expert-level support more approachable for learners of all levels.

7 Best Free AI Apps for Studying STEM Subjects

When it comes to mastering STEM subjects, the right tools can make all the difference. Whether you’re solving equations, reviewing lectures, or tackling complex science topics, these 7 free AI-powered apps are designed to make studying more efficient, interactive, and stress-free. From instant problem solvers to personalized study companions, here are the top picks that can transform how you learn – starting with the standout platform, MeraTutor.AI.

1. MeraTutor.ai

Website – https://www.meratutor.ai/ 

Since – 2024 

MeraTutor.ai is a modern, AI-powered learning assistant tailored to simplify how students learn. Available 24/7, Meratutor lets learners upload textbooks, lecture notes, or PDFs, then tap into AI-powered explanations, snip tool clarifications, and context-aware tutoring – all within a single, intuitive digital workspace.

What truly sets MeraTutor.ai apart is its Safe AI foundation: the platform is explicitly designed to block and filter out harmful or inappropriate content – such as violence, self-harm, or explicit topics – ensuring a secure, distraction-free learning environment that parents and educators can trust.

Pros of MeraTutor.AI

• Safe, Kid-Friendly AI – Meratutor’s content moderation prioritizes student well-being and learning safety.

• Intuitive, All-in-One Interface – Combines PDF uploads, snipping tools, and chat-based explanations to create a seamless study workflow. 

• Free Access with Generous Credits – Offers 200k monthly AI credits on the free plan with no credit card requirement – making it a strong option for budget-conscious learners. 

• Lower Pricing Tiers Available – Monthly plans start at 499INR for 1 million AI credits, with higher tiers offering even more credits and features like priority responses and early access. Annual plans include 2 extra months free for better long-term value. 

Cons of MeraTutor.AI 

• Credit-Based Limitations – Intensive usage may deplete free credits quickly, pushing users toward paid tier subscriptions. 

• Complexity for Casual Users – With its rich toolset and features, some students – especially younger or less tech-savvy ones – may feel overwhelmed at first. 

Bottom Line

MeraTutor.AI emerges as a safe, efficient, and affordable AI learning companion. Its built-in safeguards, intuitive interface, and credit-based pricing model make it particularly suited for independent learners and families seeking reliable help without hefty costs – especially in STEM subjects, where navigating complex content matters.

2. QANDA 

Website – https://qanda.ai/en 

Since – January 2016 

QANDA (formerly Q&A) is an AI-powered learning app that focuses on math problem-solving through image recognition. Using advanced OCR, students can take a photo of a handwritten or printed math question and instantly receive detailed, step-by-step solutions. The app is powered by MathGPT, which delivers explanations that go beyond just the final answer – making it a valuable tool for true understanding. 

Beyond problem-solving, QANDA offers personalized learning support by generating quizzes and study recommendations based on a student’s performance. This makes it more than just a homework helper – it becomes a dynamic learning assistant for STEM subjects, especially math. 

Pros of QANDA 

• Instant step-by-step solutions via OCR scan 

• Powered by MathGPT for detailed explanations 

• Personalized study content and quiz generation 

• Easy-to-user interface suitable for all grade levels 

Cons of QANDA 

• Limited support outside math-focused subjects 

• Requires a stable internet connection for real-time help 

• Some advanced features may be restricted to paid versions 

Bottom Line

QANDA is an excellent AI app for students who need quick, clear help with math problems. Its scanning and explanation features make it a standout choice for high school and college learners alike, especially when tackling homework or preparing for exams. 

3. Photomath

Website – https://photomath.com/ 

Since – 2014 

Photomath is one of the most popular AI-powered math learning apps, trusted by millions of students worldwide. It allows users to simply point their smartphone camera at a math problem – whether handwritten or printed – and instantly receive a step-by-step breakdown of the solution. Its intuitive interface and clean design make it especially appealing for students who want quick, visual help with math problems.

The app covers a wide range of topics, from basic arithmetic to complex calculus. What makes Photomath stand out is its ability to not just solve problems but to clearly explain how each step works, helping students grasp the logic behind the answer. It’s particularly effective for high school and early college-level math learners. 

Pros of Photomath 

• Scans both handwritten and printed equations 

• Provides clear, detailed step-by-step explanations 

• Clean, user-friendly interface 

• Covers a wide range of math topics (arithmetic to calculus) 

Cons of Photomath 

• Limited to math subjects only 

• Some advanced features (like animated explanations) require a subscription 

• Doesn’t always handle word problems well 

Bottom Line

Photomath is the go-to app for students needing fast, reliable math help. Whether you’re reviewing for a test or stuck on a homework problem, it delivers clear explanations that build real understanding – not just quick fixes.

4. Doubtnut

Website – https://www.doubtnut.com/ 

Since – 2016 

Doubtnut is a popular Indian educational app designed to make STEM learning more accessible through the power of AI and video-based instruction. Using image recognition technology, students can upload photos of math or science problems and receive instant solutions with detailed video explanations in multiple regional languages. 

The app stands out for its regional inclusivity and visual learning approach. It’s especially valuable for students in India who may prefer instruction in their native language or need additional support beyond text-based solutions. Doubtnut covers subjects like algebra, physics, chemistry, and biology, making it a well-rounded tool for school-level STEM preparation. 

Pros of Doubtnut 

• Solves both math and science questions 

• Offers detailed video explanations in regional languages 

• Supports handwritten queries via image upload 

• Free access to a large content library 

Cons of Doubtnut 

• Primarily tailored to the Indian curriculum (CBSE, NCERT) 

• Some advanced or international content may be limited 

• Requires and internet connection for video streaming 

Bottom Line

Doubtnut is an excellent resource for Indian students looking for multilingual, visual explanations in math and science. Its unique blend of AI and regional video content makes it one of the most inclusive AI-powered study tools available. 

5. CompSciLib 

Website – https://www.compscilib.com/ 

Since – February 2022 

CompSciLib is an all-in-one AI-powered platform built specifically for STEM students tackling technical subjects like Math, Engineering, and Computer Science. Available 24/7, it acts as a virtual tutor offering a range of tools – from equation solvers and programming support to LaTeX converters and cheatsheets – designed to streamline both learning and productivity. 

What makes CompSciLib stand out is its depth of technical resources. Students can access curated study roadmaps, practice tools for various disciplines, and even niche calculators tailored to engineering or computer science topics. It’s particularly helpful for those managing heavy course loads or preparing for coding interviews, exams, or project deadlines. 

Pros of CompSciLib 

• Supports a broad range of STEM subjects, including CS and engineering 

• Offers LaTeX converters, code explainers, and formula tools 

• Includes curated study roadmaps and cheatsheets 

• Free and available anytime, no registration required 

Cons of CompSciLib 

• Primarily web-based; mobile app is still in development 

• May feel overwhelming for casual learners or beginners 

• Lacks interactive tutoring (focuses more on tools/resources) 

Bottom Line

CompSciLib is a powerful companion for advanced STEM learners, particularly those in college or technical fields. With its comprehensive set of AI tools, it’s ideal for boosting study efficiency and solving complex problems on demand. 

6. Mindgrasp 

Website – https://www.mindgrasp.ai/ 

Since – 2021 

Mindgrasp is an AI-powered learning assistant that helps students turn their study materials into meaningful learning aids. Whether you’re working with lecture notes, textbooks, PDFs, or videos, Mindgrasp can automatically generate summaries, flashcards, quizzes, and more – all tailored to the content you upload. 

What sets Mindgrasp apart is its ability to adapt to various input formats, making it especially useful for students juggling multiple resources. It also includes a built-in AI tutor that can answer questions based on your uploaded content, effectively turning your notes into an interactive study guide. 

Pros of Mindgrasp 

• Converts text, audio, and video content into flashcards, summaries, and quizzes 

• Built-in AI tutor for content-specific Q&A 

• Saves time by automating notetaking and study prep 

• User-friendly and ideal for both high school and college students 

Cons of Mindgrasp 

• Limited functionality without uploading your own content 

• Not specialized for solving math/science problems 

• May require editing or double-checking generated content for accuracy 

Bottom Line

Mindgrasp is a versatile AI study assistant perfect for students who rely on a variety of learning materials. It streamlines content review and enhances retention, making it a smart choice for efficient, self-guided studying. 

7. StudyMonkey.ai 

Website – https://studymonkey.ai/ 

Since – 2023 

StudyMonkey.ai is a versatile, all-subject AI tutor that offers 24/7 free step-by-step homework help across a wide range of academic areas. From trigonometry and physics to web development, zoology, and even USMLE prep, this tool goes beyond traditional STEM apps by providing support for both technical and non-technical subjects.

The platform is designed for convenience – students can input questions directly and receive detailed, conversational explanations tailored to their level of understanding. Whether you’re tackling a tough STEM problem or reviewing for a test in another discipline, StudyMonkey offers accessible support anytime you need it. 

Pros of StudyMonkey.ai 

• Covers a broad range of subjects beyond STEM 

• Free and available 24/7 with no login required 

• Step-by-step explanations in clear, simple language 

• Great for both quick answers and deep understanding 

Cons of StudyMonkey.ai 

• Lacks advanced STEM tools like equation solvers or code editors 

• Responses may vary in depth depending on the subject 

• Less effective for higher-level college coursework 

Bottom Line

StudyMonkey.ai is an excellent general-purpose AI tutor, especially for students who need help across multiple subjects. It’s an always-available, easy-to-use platform that makes it a reliable academic companion for both STEM subjects and beyond. 

Comparing the 7 Free AI Apps for Studying STEM Subjects: A Comparison Table 

To help you choose the right tool for your learning needs, we’ve compiled a detailed comparison of the top 7 free AI apps for studying STEM subjects. From math solvers to comprehensive study assistants, this table highlights each app’s strengths, limitations, and ideal use cases – so you can make an informed choice based on your goals and learning style.

App Name	Key Features	The Good	The Bad	Best For
MeraTutor.AI	Safe AI, PDF & snip-based study, 24/7 access, Coach Mode, Image and Video Search, ai-credit-based	Kid-safe content, generous free credits, affordable pricing	Credit limits, May overwhelm casual users	Safe, all-in-one STEM learning with personalized AI tutoring
QANDA	OCR scanning, MathGPT, quiz generation	Instant math help, personalized quizzes, user-friendly	Math-focused, needs internet, paid features	Quick math problem-solving using OCR and AI
Photomath	Camera-based solver, step-by-step guidance	Scans handwritten/printed math, intuitive design	Math-only, subscription for extras, weak with word problems	Visual math explanations from scanned problems
Doubtnut	Image recognition, video answers, multilingual support	Supports Indian curriculum, video guidance, free library	Curriculum-limited, internet needed for videos	Regional language video solutions for math and science
CompSciLib	STEM calculators, LaTeX tools, study roadmaps	Advanced tools, free access, no signup needed	Web-only, less beginner-friendly, no live tutoring	College-level support in CS, math, and engineering
Mindgrasp	Content-to-flashcard converter, AI tutor	Timesaving, multi-format support, interactive Q&A	Needs user content, not math-specific, may require edits	Turning content into flashcards, summaries, and quizzes
StudyMonkey.ai	Step-by-step tutoring, 24/7 free help	Broad subject support, simple UI, no signup	No advanced STEM tools, depth varies, unsuitable for college-level	General-purpose, all-subject AI homework help

Conclusion

In the evolving landscape of STEM education, these 7 FREE AI apps prove that powerful learning support doesn’t have to come at a cost. From visual math solvers like Photomath and QANDA to content converters like Mindgrasp and study companions like MeraTutor.AI, each tool brings something unique to the table – whether it’s personalized tutoring, multilingual video guidance, or all-in-one study dashboards.

Every student learns differently, and these tools are most effective when used in combination based on your needs. Use MeraTutor.AI for structured support, Doubtnut for science explanations in regional languages, and CompSciLib when you need advanced tools for engineering or coding. The flexibility these apps offer means you can build a customized study system that works for you.

As we move deeper into 2025, AI is no longer a futuristic concept – it’s an everyday study partner. These apps empower students to take control of their learning, improve outcomes, and build confidence in even the most challenging STEM subjects.

Ready to Level Up Your STEM Study Game? Experience MeraTutor.AI for FREE!
If you’re serious about mastering STEM subjects, MeraTutor.AI offers a secure, feature-rich learning experience that goes far beyond basic homework help. With its Safe AI technology, intuitive interface, and generous free credit plan, you’ll get personalized explanations, interactive tools, and peace of mind – all without sparing a rupee. 

Sign up for free today and discover how MeraTutor.AI can become your trusted study companion. Whether you’re tackling tough equations, reviewing science notes, or prepping for a big exam, it’s the smarter, safer way to learn – on your terms.
Sign Up Now

FAQs