Zeno Study vs OnlyMath
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Zeno Study
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Zeno โ the AI study app for school, exams and college Snap a photo of your notes, upload a PDF or record your class. Zeno turns it into flashcards, study sheets and full practice exams. Your study path guides you step by step to exam day, and your personal AI tutor explains anything you don't understand. TURN YOUR MATERIAL INTO STUDY TOOLS โข AI flashcards: Zeno creates flashcards from your photos, PDFs, texts and notes. Spaced repetition (FSRS) adapts to what you know, so you always study the cards that are due. โข Study sheets: Zeno condenses long chapters into clear, printable study sheets. โข Practice exams: Practice under real exam conditions with a timer. Question types include multiple choice, true/false, fill in the blanks, matching, ordering, calculations and open questions that the AI grades with feedback. โข Recordings and notes: Record your class or lecture, even with your screen locked. Zeno turns it into clean notes. YOUR STUDY PATH TO EXAM DAY โข Enter your topic and exam date, and Zeno plans your way there โข Work through it section by section, with lessons based on your own material โข Test yourself after each section and see how far you've come YOUR AI TUTOR โข Ask questions about your material and get step-by-step explanations โข Send a photo of a problem and see how to solve it โข Your tutor knows what's in your folders, notes and study sheets STAY ON TRACK โข Study streak: Study on consecutive days and turn it into a habit โข Focus mode: Grow your own forest while you study without distractions โข Stats: See where you stand on every deck and every exam EVERYTHING IN ONE PLACE โข A folder for every subject, holding all your sources and study material โข Fast search across all your flashcards, notes and study sheets โข Study offline: flashcards you've already loaded work without internet โข Syncs with the web app at zenostudy.app, so you can pick up on your laptop โข Light and dark mode WHO IS ZENO FOR? Zeno is for high school students before a test, students preparing for finals, college students during exam season and anyone in training or continuing education. Biology, history, math, vocabulary or law: Zeno works with your own material. Download Zeno and turn your notes into your first flashcard deck today. Terms: https://zenostudy.app/en/terms Privacy: https://zenostudy.app/en/privacy
OnlyMath
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Only Math is a simple mental math app. Train addition, subtraction, multiplication, division, or mixed operations across five difficulty levels. Choose between Standard and First Try modes, select your round length, and track your speed, accuracy, personal records, streaks, and daily practice. Designed for students, professionals, interview preparation, and anyone looking to sharpen their mental math skills or quantitative abilities. No accounts. No subscriptions. No ads. No useless features. Only math.
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Verdict
The clearest difference is in-app purchases: OnlyMath at none against Zeno Study's 3. Zeno Study's advantage is update cadence (every 3 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Zeno Study sells 3 in-app purchases, starting at $8.99 per month. OnlyMath asks for nothing beyond the download.
Zeno Study ships an update every 3 days, OnlyMath every 2 months. Both last shipped on October 31, 2026.
| Parameter | Zeno Study | OnlyMath |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days โ better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad โ better | iPhone |
| Requires iOS | 16.4 | 16.4 |
| Further details โ not scored | ||
| Size | 62 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | Systeme Digital GmbH | LAURENT IRRAWADDY CHAGNON |
In-app purchases
Zeno Study
- Zeno Pro Monthly3 Days trial$8.991 Month
- Zeno Pro (monthly)3 Days trial$12.991 Month
- Zeno Pro (yearly)3 Days trial$89.991 Year
OnlyMath
No in-app purchases









