Investment Masters Class (MastersInvest.com) adds Education, Newsletters, and Playbooks & Case Studies coverage that Letters and Reviews skips.
VOL. XCIV, NO. 247
★ FINANCIAL TOOLS & SERVICES DIRECTORY ★
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Tuesday, October 28, 2025
Tool Comparison
Investment Masters Class (MastersInvest.com) vs Letters and Reviews comparison
Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.
Quick takeaways
Letters and Reviews includes Stock Ideas, and 13F categories that Investment Masters Class (MastersInvest.com) omits.
In depth comparison
Investment Masters Class (MastersInvest.com)
mastersinvest.com
A free educational resource offering tutorials, curated reading, and essays on timeless lessons from great investors. Includes a blog and newsletter sign-up. All content is informational and intended to inspire better investing habits — not financial advice.
Platforms
Web
Pricing
Free
Quick highlights
- A library of 100 structured tutorials covering core concepts such as compounding, moats, margin of safety, position sizing, and investment checklists.
- Regularly updated blog essays distilling insights from legendary investors, CEOs, and business leaders.
- The “Masters Bookshelf,” a curated reading list spanning investing, history, psychology, and business classics.
- Investor Letters hub linking directly to primary sources like Buffett, Li Lu, and Lindsell Train.
- Profiles of notable investors, summarizing their philosophies, strategies, and biggest lessons.
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Letters and Reviews
lettersandreviews.blogspot.com
Free, personal curation site that aggregates **fund manager letters**, tickers mentioned in those letters, and **quarterly 13F** filer lists the author follows. Each quarter page links to original letters and maps tickers to quick‑reference pages; some 13F pages embed holdings tables and activity (new/increased/decreased/sold) for many managers. Also includes a small **Podcasts** list. No accounts, alerts, exports, or API—think link‑hub for primary sources rather than a data platform.
Categories
Platforms
Web
Pricing
Free
Quick highlights
- Quarterly **Fund Manager Letters** pages with the fund name, date, and a ‘Stocks Mentioned’ column (tickers link out for quick lookup).
- Quarterly **13‑F pages** the author reads, with many entries including holdings tables and position‑change flags (e.g., NEW / Sold Out / % of portfolio).
- Lightweight **About** page clarifies the goal: stock‑idea discovery from letters; author shares links and invites tips via @_iinvested.
- A small **Podcasts** page curating investing/finance episodes the author plans to re‑listen to.
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Where they differ
Investment Masters Class (MastersInvest.com)
Distinct strengths include:
- A library of 100 structured tutorials covering core concepts such as compounding, moats, margin of safety, position sizing, and investment checklists.
- Regularly updated blog essays distilling insights from legendary investors, CEOs, and business leaders.
- The “Masters Bookshelf,” a curated reading list spanning investing, history, psychology, and business classics.
- Investor Letters hub linking directly to primary sources like Buffett, Li Lu, and Lindsell Train.
Letters and Reviews
Distinct strengths include:
- Quarterly **Fund Manager Letters** pages with the fund name, date, and a ‘Stocks Mentioned’ column (tickers link out for quick lookup).
- Quarterly **13‑F pages** the author reads, with many entries including holdings tables and position‑change flags (e.g., NEW / Sold Out / % of portfolio).
- Lightweight **About** page clarifies the goal: stock‑idea discovery from letters; author shares links and invites tips via @_iinvested.
- A small **Podcasts** page curating investing/finance episodes the author plans to re‑listen to.
Feature-by-feature breakdown
| Attribute | Investment Masters Class (MastersInvest.com) | Letters and Reviews |
|---|---|---|
Categories Which research workflows each platform targets | Shared: Blogs Unique: Education, Newsletters, Playbooks & Case Studies | Shared: Blogs Unique: Stock Ideas, 13F |
Asset types Supported asset classes and universes | Other | Stocks, ETFs |
Experience levels Who each product is built for | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Platforms Where you can access the product | Web | Web |
Pricing High-level pricing models | Free | Free |
Key features Core capabilities called out by each vendor | Unique
| Unique
|
Tested Verified by hands-on testing inside Find My Moat | Not yet | Not yet |
Editor pick Featured inside curated shortlists | Standard listing | Standard listing |
Frequently Asked Questions
Which workflows do Investment Masters Class (MastersInvest.com) and Letters and Reviews both support?
Both platforms cover Blogs workflows, so you can research those use cases in either tool before digging into the feature differences below.
Do Investment Masters Class (MastersInvest.com) and Letters and Reviews require subscriptions?
Both Investment Masters Class (MastersInvest.com) and Letters and Reviews keep freemium access with optional paid upgrades, so you can trial each platform before committing.
How can you access Investment Masters Class (MastersInvest.com) and Letters and Reviews?
Both Investment Masters Class (MastersInvest.com) and Letters and Reviews prioritize web or desktop access. Investors wanting a mobile-first workflow may need to rely on responsive web views.
What unique strengths set the two platforms apart?
Investment Masters Class (MastersInvest.com) differentiates itself with A library of 100 structured tutorials covering core concepts such as compounding, moats, margin of safety, position sizing, and investment checklists., Regularly updated blog essays distilling insights from legendary investors, CEOs, and business leaders., and The “Masters Bookshelf,” a curated reading list spanning investing, history, psychology, and business classics., whereas Letters and Reviews stands out for Quarterly **Fund Manager Letters** pages with the fund name, date, and a ‘Stocks Mentioned’ column (tickers link out for quick lookup)., Quarterly **13‑F pages** the author reads, with many entries including holdings tables and position‑change flags (e.g., NEW / Sold Out / % of portfolio)., and Lightweight **About** page clarifies the goal: stock‑idea discovery from letters; author shares links and invites tips via @_iinvested..
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Curation & Accuracy
This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).
Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.