XStudy vs FeynmanStudy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
XStudy
This AI-powered academic mentor helps students learn faster and research smarter with over 30 advanced tools. It offers personalized support, essay assistance, language translation, and problem-solving capabilities, all while promoting academic integrity.
- Adaptive Learning Engine for personalized support
- Source-Finder for research papers
- Smart Writing Suite for essays
- Line-by-Line Translator (100+ languages)
- AI Photo Solver for math problems
- Curriculum-aligned and hallucination-resistant content
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XStudy – All-in-One AI Mentor Learn faster, research smarter, your all-in-one AI mentor is here. XStudy AI is your personal academic powerhouse—an all-in-one AI super app that helps you learn faster, research smarter, while staying academically honest. Powered by our Adaptive Learning Engine (ALE), XStudy continuously learns from your study patterns and needs to deliver ever-more personalized support, just like a mentor who gets better over time. From solving tough problems to sourcing citations and analyzing language, we’ve got every part of your academic life covered with 30+ advanced AI tools. Why Choose XStudy? • Truly Personalized with ALE – Unlike static tools or tutors, XStudy adapts to how you learn, improving the precision and relevance of responses over time. • Source-Finder for Essays – Find real, citable sources and quotes for research papers in minutes—not hours. • Smart Writing Suite – Outline ideas, enhance paragraphs, and polish arguments while staying in your own voice. • Language Tools Built Different – Translate any text with context using our Line-by-Line Translator (100+ languages), or break down tricky vocabulary in Latin, Spanish, and French. • Curriculum-Aligned. Hallucination-Resistant. – Every feature is built for the classroom, with citation-ready and source-traceable content. • Built for Real Academic Integrity – With tools to support honest learning and prevent misuse, you can learn better—without cutting corners. Subjects We Cover • Literature – Quote Finder, Essay Tools, Outline Generation • Mathematics – All levels from Pre-Algebra to Calculus • Languages – English, Spanish, French, Latin, and 100+ languages • Social Sciences – History, Philosophy, Government, and more • Biology, Physics, Chemistry – With full Q&A and writing support • Economics – Graph support, definitions, FRQ help Tools You’ll Love • Literature Paper Quote Finder • Research Paper Quote + Source Finder • Vocabulary Analyzer (Latin/Spanish/French) • Line-by-Line Translator (Supports 100+ languages) • AI Photo Solver for handwritten or printed problems Smarter Learning, Smarter Pricing Unlock all features for FREE. When you’re ready to upgrade, the full version starts at just $6.99/month—up to 70% cheaper than competitors, with 50x more tools across all subjects. XStudy Unlimited Features • Unlimited explanations & access • Priority access to upcoming advanced features • Completely ad-free experience • Priority user support Stay Connected Website: www.xstudyai.com TikTok: @xstudy.ai Instagram + Threads: @xstudyai_official Facebook: @XStudy AI X (Twitter): @XstudyAI YouTube: @XStudy-Official XStudy – Learn faster, research smarter, your all-in-one AI mentor is here. Download now and take your study game to the next level. EULA: https://www.xstudyai.com/term-of-use.html
FeynmanStudy
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FeynmanAI helps you truly understand any topic by teaching it out loud—then challenges you with Socratic questions, adaptive quizzes, and smart flashcards. Record your explanation, get instant feedback on gaps, and track comprehension over time. Perfect for exams, professional learning, and lifelong curiosity. What you can do: • Speak your understanding; get AI feedback and next questions • Turn sessions into spaced-repetition flashcards • Quiz yourself with adaptive difficulty • Import references via photos or links • Track sessions, subsessions, and comprehension trends • Works with voice input and transcripts Upgrade to FeynmanAI Premium for unlimited sessions, advanced analytics, and priority features. Your subscription auto‑renews unless canceled at least 24 hours before the end of the period. Manage in Account Settings. Privacy Policy and Terms of Service • Privacy Policy: https://towering-cherry-c1e.notion.site/Privacy-Policy-for-FeynmanAI-286f59becbec80869efbdee03bd77158?source=copy_link • Terms of Service: https://towering-cherry-c1e.notion.site/Terms-of-Service-for-FeynmanAI-286f59becbec808fadb9fcb2c02c3c97?source=copy_link
Screenshots
Verdict
XStudy and FeynmanStudy are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. XStudy sells 11 in-app purchases, starting at $0.99 per month and FeynmanStudy sells 3 in-app purchases, starting at $10.00 per 7 days. Whichever you choose, the download price is not the number that matters.
| Parameter | XStudy | FeynmanStudy |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (14 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Every 3 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 34 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | XStudy AI Inc. | AlphaByte, Inc. |
In-app purchases
XStudy
- limited plan3 Days trial$0.991 Month
- Monthly Unlimited$1.991 Month
- Monthly Limited Plan$6.991 Month
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- Monthly Unlimited Plan$11.491 Month
- Quarterly Limited Plan$29.993 Months
- Quarterly Unlimited Plan$36.993 Months
- Annually Limited Plan$99.991 Year
- Annually Unlimited Plan$119.991 Year
- 300 Diamonds$9.99
- 600 Diamonds$19.99
- 1000 Diamonds$29.99
FeynmanStudy
- Weekly7 Days trial$10.007 Days
- Monthly1 Month trial$40.001 Month
- Yearly1 Year trial$479.991 Year









