Kero vs Maestro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kero
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Kero is an AI study app that turns PDFs, lectures, YouTube videos, websites, and notes into clear study notes, quizzes, flashcards, and exam practice. Study faster with everything in one place: - Upload PDFs, documents, websites, YouTube links, or pasted text - Turn messy course material into clean study notes - Chat with your notes and ask follow-up questions - Generate flashcards, quizzes, fill-in-the-blank drills, and exam practice - Get step-by-step explanations for homework and hard concepts - Check writing for AI signals before submitting essays - Organize notes by class, course, or folder - Build a study plan for exams, homework, and review Whether you are cramming for a test, reviewing a lecture, catching up on class notes, or trying to understand a difficult topic, Kero helps you turn your own material into an active study session. Use Kero for school, college, exam prep, homework help, lecture review, PDF summaries, flashcards, quizzes, and smarter study sessions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://studioray.co/privacy
Maestro
This app acts as a personal tutor, creating custom lesson paths for any subject. It provides explanations, practice exercises, quizzes, and spaced review to ensure learning retention. Access lessons on multiple devices and export content for further study.
- Custom lesson path creation
- Step-by-step learning modules
- Worked examples and diagrams
- Interactive practice exercises
- Spaced review for retention
- Cited sources for further reading
- Cross-device accessibility
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Maestro is your personal tutor. Tell it what you want to learn and why it matters — it builds a short course of lessons that take you there, one step at a time. No endless searching. No walls of text. You name the goal; Maestro researches, writes and orders the lessons, citing relevant sources when it finds them. HOW IT WORKS • Name your goal — what to learn, why it matters, and how much time you have a day. • Get your path — an ordered set of short lessons that build toward it. • Learn it for good — read, practice, pass the quiz, and let spaced review bring it back at the right moment. A WHOLE TUTOR, NOT JUST AN ANSWER Every lesson is a complete teaching moment: • A clear explanation in plain language, with a worked example and a diagram when it helps. • Practice you actually do — flashcards, fill-in-the-blank, put-in-order. • A short quiz that locks it in, then spaced review at the right time. • Open the sources attached to a lesson when you want to read further. IT LEARNS YOU Maestro remembers your progress and your place, so the next lesson always meets you where you are. A glossary grows as you master ideas, and each lesson is pitched at the right difficulty. WHEREVER YOU LEARN Ask follow-up questions, export any lesson to PDF, and open Maestro from Siri, Shortcuts, Spotlight, a Home Screen widget and Apple Watch. MAESTRO PLUS Start with 10 free lessons each month. Maestro Plus gives you ten times more: • 100 lessons a month — 10× the free plan • Everything in the free app, just more of it It starts with one question: what do you want to learn? — Maestro Plus is an auto-renewing subscription. Payment is charged to your Apple Account at confirmation of purchase and renews automatically unless cancelled at least 24 hours before the period ends. Manage or cancel anytime in Settings. Terms of Use: https://marketing-production-fe71.up.railway.app/terms Privacy Policy: https://marketing-production-fe71.up.railway.app/privacy
Screenshots
Verdict
The clearest difference is iOS requirement: Kero at 16.4 against Maestro's 26.0. On price, ads, in-app purchases and device support 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. Kero sells 3 in-app purchases, starting at $9.99 per 7 days and Maestro sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Kero | Maestro |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone | iPhone |
| Requires iOS | 16.4 — better | 26.0 |
| Further details — not scored | ||
| Size | 159 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Studio Ray Inc. | Matteo Dante |
In-app purchases
Kero
- Kero Pro Weekly$9.997 Days
- Kero Pro Yearly Offer3 Days trial$79.991 Year
- Kero Pro Yearly3 Days trial$99.991 Year
Maestro
- Maestro Plus Monthly$4.991 Month
- Maestro Plus Yearly$39.991 Year









