Crash Course vs STRATA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Crash Course
Access AI-powered audio lessons on any subject. Simply choose a topic and begin learning instantly. Engage further by asking questions verbally at the end of each chapter.
- AI-powered audio lessons
- Learn any topic
- Instant learning
- Verbal Q&A
- Chapter-based learning
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Crash Course delivers AI-powered audio lessons on any topic. Just pick a subject and start learning in minutes. At the end of each chapter you can ask a question by just speaking into the microphone.
STRATA
This app transforms any subject into a comprehensive, structured learning course in seconds. It generates original content, including modules, lessons, definitions, and quizzes, tailored to your chosen depth and pace. Explore diverse topics from history to finance with in-depth prose and interactive elements.
- AI-generated custom courses
- In-depth lessons and definitions
- End-of-course quizzes
- Adjustable text complexity
- AI assistant for questions
- Audio lesson playback
- Spaced repetition review
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STRATA turns any subject into a full, structured course — in seconds. Type what you want to learn. Set how deep you want to go. STRATA builds a complete curriculum around it: real modules, full lessons, key concepts, definitions, notable passages, and a final quiz. No pre-packaged content. No browsing a catalog. Just your curiosity, and a course built for exactly that. LEARN ANYTHING History, physics, philosophy, finance, literature, medicine, design, law — if you can describe it, STRATA can teach it. The AI builds an original course from scratch, written at the depth and pace you choose. BUILT FOR DEPTH, NOT DISTRACTION Every lesson reads like it was written by someone who genuinely cares about the subject. Long-form prose, precise definitions, pull quotes from real thinkers, citations, formulas, and reflection prompts that make you stop and think. FREE WITH EVERY ACCOUNT — 1 AI-generated course per month — Full lesson content: prose, definitions, key points, pull quotes, citations — End-of-course quiz — Light and dark mode, adjustable text complexity SCHOLAR — $7.99/month or $64.99/year (auto-renewable) — 5 courses per month — Ink AI assistant (50 messages/month) — ask questions about what you're studying — Audio reading — listen to lessons in four natural voices — Lesson Connections — see how your courses relate to each other — Module comprehension checks — Full public library access LUMINARY — $14.99/month or $119.99/year (auto-renewable) — Unlimited courses per month — Ink AI assistant (200 messages/month) — Priority AI generation — Public course sharing — Full spaced repetition review system — All Scholar features included Subscriptions auto-renew monthly or annually. Cancel anytime in Settings → Apple ID → Subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://koatechapps.com/privacy
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Verdict
The clearest difference is rating: STRATA at 5.0 against Crash Course's 3.0. STRATA also leads on device support (3 vs 1). Crash Course's advantage is in-app purchases (none vs 4) and update cadence (every 3 days vs fortnightly). On price, ratings volume and ads 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. STRATA sells 4 in-app purchases, starting at $7.99 per month. Crash Course asks for nothing beyond the download.
STRATA holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively.
Crash Course ships an update every 3 days, STRATA fortnightly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Crash Course | STRATA |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 3 — better |
| Update frequency | Every 3 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 2 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Bart Decrem | EVAN ASHTON MCDADE |
In-app purchases
Crash Course
No in-app purchases
STRATA
- Scholar Monthly7 Days trial$7.991 Month
- Luminary Monthly7 Days trial$14.991 Month
- Scholar Yearly$59.991 Year
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- Luminary Yearly$119.991 Year
