ReTrader vs 66 Days
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ReTrader
Simulate trading major historical financial events to understand market movements. Engage in short trading scenarios, compete on leaderboards, and gain insights from experienced traders. Subscribe for weekly analysis and mini-games.
- Trade historical financial events
- Simulate market movements
- Analyze profit/loss
- Global trading competitions
- Weekly analysis subscriptions
- Leaderboard rankings
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ReTrader allows users to trade major historic financial events exactly as they happened. ReTraders see first hand how markets moved and how they would have traded live, as the news unfolded. The App invites users to trade scenarios like the collapse of Lehman Brothers, Black Wednesday, or the release of major economic data, and you will be able to react to those events by buying or selling depending on whether you think the market will go up or down The objective of ReTrader is to help you understand how and why markets move, as each scenario is previewed and reviewed by an experienced trader, and you can at all times see the profit or loss of your positions. ReTrader condenses each scenario into short 3-5 minute simulations for you to engage with. Every time you play a game for the first time, we will record your score on a leaderboard where you can compare your performance to other users. ReTraders can enter into global trading competitions or use the APP to keep up-to-date with the current events by choosing to sign up to our subscriptions, which will give you our analysis in the form of mini-games on a weekly basis. If you have any questions, email us at: answers@retraderapp.com
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 rating: 66 Days at 4.8 against ReTrader's 3.0. 66 Days also leads on update cadence (every 10 days vs every 2 months) and ratings volume (258 vs 2). ReTrader's advantage is review sentiment (82% vs 50%) and iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and monetization model 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. ReTrader sells 10 one-off in-app purchases and 66 Days sells 2 in-app purchases, starting at $15.99 per month. Whichever you choose, the download price is not the number that matters.
66 Days holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: 66 Days has 258 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 82% of ReTrader's written reviews are positive against 50% of 66 Days's, so the app with the better star average is not the one people write more warmly about.
ReTrader ships an update every 2 months, 66 Days every 10 days. The most recent releases landed on October 29, 2026 and October 23, 2026 respectively.
| Parameter | ReTrader | 66 Days |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 4.8 (258 ratings) — better |
| Positive reviews | 81.8% of reviews — better | 50.0% of reviews |
| Number of ratings | 2 | 258 — better |
| Update frequency | Every 2 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 36 MB | 110 MB |
| Age rating | 4+ | 4+ |
| Developer | Fintratech Limited | Uru Technologies, LLC |
Customer experience
ReTrader
66 Days
In-app purchases
ReTrader
- ECB Interest Rate 2013$0.99
- Fiscal Cliff 2012$0.99
- Taper Tantrum 2013$0.99
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- Flash Move 2010 - Available Soon$0.99
- Biggest equity move of 2014$0.99
- Swiss Remove FX Floor: EURUSD$0.99
- Swiss Remove FX Floor: GOLD$0.99
- Swiss Remove FX Floor: Swiss Stocks$0.99
- Russia and ECB - Sep 2014 - Dax$0.99
- 2 Month Subscription$14.99
66 Days
- 66 Days Prep Pro$15.991 Month
- 66 Days Prep Pro$49.991 Year









