Sci vs 66 Days
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sci
Explore STEM concepts and problem-solving skills through hands-on activities tied to real-world locations. Search activities by site, STEM field, or curriculum standards. Activities are categorized for pre-visit, during-visit, and post-visit engagement.
- Hands-on STEM activities
- Location-based exploration
- Searchable by site name
- Filter by STEM field
- Curriculum standard alignment
- Pre/during/post visit activities
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This Sci-Map app encourages the exploration of STEM concepts right in your own community and promotes the practice of problem-solving skills. It is an efficient tool for educators, parents, or anyone seeking a guide to explore the world . The hands-on activities are searchable by name of the real-world site, by type of activity (sorted by STEM field and name of the activity) or by Florida Curriculum standards associated with the concepts or skills used in the hands-on activity. The activities are also sorted by whether they are useful while you are visiting the site (to guide you in your exploration) or if they are introductory activities (to prepare you before you visit) or extension activities (to further investigate after you visit and have explored the site).
66 Days
Master banking and consulting interviews with daily AI-powered practice. Track your progress on a 66-day journey with personalized feedback on technical, behavioral, and case questions. Improve your resume and gain confidence for top firms.
- AI interview coach with personalized feedback
- Daily drills for behavioral, technical, and case questions
- 66-day progress heat map
- Resume checker
- Excel and valuation tools
- Analytics dashboard
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66 Days Prep is an AI-powered career preparation platform designed to help candidates master interviews for banking and consulting roles through structured, daily progress. The app combines personalized coaching, habit tracking, and analytics to transform your preparation into a consistent 66-day journey. Each day you’ll train across behavioral, technical, cases or market-based questions while receiving instant feedback from an AI coach. The goal is simple — make interview mastery a daily habit. Your progress is visualized through a 66-day heat map that tracks consistency, focus, and improvement. Every session compounds your learning so that when interview season arrives, you’re confident, sharp, and ready to perform. Key features: • AI interview coach for personalized feedback on real questions • Daily drills in behavioral, technical, cases, and market news • 66-day heat map that tracks performance and consistency • Resume checker to strengthen clarity and impact • Excel and valuation tools for technical accuracy • Productivity features including timers and streak reminders • Analytics dashboard that highlights your growth over time Built by former bankers and consultants, 66 Days Prep mirrors real recruiting standards at leading firms such as Goldman Sachs, Morgan Stanley, McKinsey, and Bain. The app ensures that every minute spent practicing is focused on what matters most — structured thinking, confident delivery, and business intuition. Whether you are recruiting for your first internship, preparing for post-graduate consulting interviews, or advancing your career in finance, 66 Days Prep provides a disciplined path to daily improvement. Consistency is what separates good candidates from great ones. 66 Days Prep helps you build that consistency through smart repetition, clear feedback, and visible progress you can track. Build momentum, develop confidence, and master your interviews with 66 Days Prep — your AI career partner for banking and consulting success. Some features, including the AI interview coach, require a subscription. Please review our Privacy Policy at https://www.66daysprep.com/privacy. By using this app, you agree to the terms outlined in https://www.66daysprep.com/terms and https://www.apple.com/legal/internet-services/itunes/dev/stdeula/.
Screenshots
Verdict
The clearest difference is in-app purchases: Sci at none against 66 Days's 2. Sci also leads on update cadence (every 2 days vs every 10 days) and iOS requirement (15.1 vs 17.0). 66 Days's advantage is ratings volume (260 vs 2). On price, rating, ads 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. 66 Days sells 2 in-app purchases, starting at $15.99 per month. Sci asks for nothing beyond the download.
Sci holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: 66 Days has 260 ratings behind it against 2, so its average is the more settled of the two.
Sci ships an update every 2 days, 66 Days every 10 days. The most recent releases landed on October 30, 2026 and November 8, 2026 respectively.
| Parameter | Sci | 66 Days |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.8 (260 ratings) |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | 2 | 260 — better |
| Update frequency | Every 2 days — better | Every 10 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 33 MB | 110 MB |
| Age rating | 4+ | 4+ |
| Developer | Hands On Gainesville Inc | Uru Technologies, LLC |
Customer experience
Sci
66 Days
In-app purchases
Sci
No in-app purchases
66 Days
- 66 Days Prep Pro$15.991 Month
- 66 Days Prep Pro$49.991 Year









