Comparison

Zeno Study vs OnlyMath

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Zeno Study

Features
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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 โ€ข 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. โ€ข Study sheets: Zeno condenses long chapters into clear, printable study sheets. โ€ข 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. โ€ข 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 โ€ข Enter your topic and exam date, and Zeno plans your way there โ€ข Work through it section by section, with lessons based on your own material โ€ข Test yourself after each section and see how far you've come YOUR AI TUTOR โ€ข Ask questions about your material and get step-by-step explanations โ€ข Send a photo of a problem and see how to solve it โ€ข Your tutor knows what's in your folders, notes and study sheets STAY ON TRACK โ€ข Study streak: Study on consecutive days and turn it into a habit โ€ข Focus mode: Grow your own forest while you study without distractions โ€ข Stats: See where you stand on every deck and every exam EVERYTHING IN ONE PLACE โ€ข A folder for every subject, holding all your sources and study material โ€ข Fast search across all your flashcards, notes and study sheets โ€ข Study offline: flashcards you've already loaded work without internet โ€ข Syncs with the web app at zenostudy.app, so you can pick up on your laptop โ€ข 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

About

OnlyMath

Read full description

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.

Screenshots

Zeno Study4 screens
OnlyMath4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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.

UpkeepUpdate frequency

Zeno Study ships an update every 3 days, OnlyMath every 2 months. Both last shipped on October 31, 2026.

Scorecard2 real differences ยท 4 level
Zeno Study versus OnlyMath: the parameters behind the verdict, then further details
ParameterZeno StudyOnlyMath
PriceFreeFree
Update frequencyEvery 3 days โ€” betterEvery 2 months
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS16.416.4
Further details โ€” not scored
Size62 MB46 MB
Age rating4+4+
DeveloperSysteme Digital GmbHLAURENT IRRAWADDY CHAGNON

In-app purchases

3 purchases

Zeno Study

Subscriptions3
  • 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
None

OnlyMath

No in-app purchases

Questions

Is Zeno Study free?
Zeno Study is free to download, with in-app purchases available.
Is OnlyMath free?
OnlyMath is free to download, with no in-app purchases.
Do Zeno Study or OnlyMath have ads?
Neither Zeno Study nor OnlyMath shows ads.
Which is updated more often, Zeno Study or OnlyMath?
Zeno Study ships an update every 3 days, and OnlyMath every 2 months. Most recently, Zeno Study was updated on October 31, 2026 and OnlyMath on October 31, 2026.

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