Freemium

Prospero.ai

Leads with 'beating the S&P by 81%' before disclosing the number is simulated.

3.0 Finance & Fintech AI
3.0 Good 3.0
Named, credentialed founder with a stated institutional track record Headline performance figures lead; the simulated-results disclosure comes after
Reviewed by Challenging Voice Editorial · Updated Sep 2026 How we rate
PricingFree
Free planYes
CompanyProspero.ai
PlatformsAndroid, iOS
CategoryFinance & Fintech AI
Visits11
Last reviewedAug 2026
UpdatedSep 2026
Ask AI about Prospero.ai ChatGPT Claude Perplexity

Overview

Prospero.ai is a free stock analysis app for retail investors, running more than 10,000 AI and machine learning models across millions of data points to generate signal-driven stock picks, trend recognition and institutional sentiment analysis, delivered through a mobile app and paid Substack newsletters. It is free to download on iOS and Android; the founder is George Kailas, who states 13-plus years building predictive systems for institutions.

A named, credentialed founder and a genuine multi-year track record of published newsletter picks – nearly 5,000 since 2023 – are real substance that the nine investment-scam funnels rejected elsewhere in this catalogue never had. Free access to the core stock-picking app removes the upfront cost of evaluating whether the signals are useful to you.

Read the marketing order carefully, because it is the finding: the headline claims – ‘60% win rate vs S&P500’, ‘beating S&P by 81% annualized’, ‘27% better returns’ – come first, with the disclosure that these are **simulated results, not actual trading outcomes**, arriving after. Compare that with Alphanso, reviewed elsewhere in this catalogue, which states its hypothetical status and the model’s start date before the performance figure. A backtested win rate tells you how a strategy would have performed on data it may have been tuned against, which is a materially weaker claim than real audited returns, and it is worth reading the full methodology behind any specific number before treating it as a reason to trust a signal with real money.

Key features

  • 10,000+ AI/ML models generating stock signals
  • Institutional sentiment and trend analysis
  • Free iOS and Android app
  • Paid Investing and Trading newsletters via Substack
  • Nearly 5,000 published picks since 2023

Screenshots & demo

Prospero.ai screenshot 1

Pricing

Prospero.ai offers a free plan, with paid upgrades for higher limits and more features.

  • Pricing modelFreemium
  • Starting priceFree
  • Free planYes
Visit Prospero.ai

Pricing is provided as a guide. Check the official site for the latest plans.

Is Prospero.ai expensive?

Prospero.ai has no advertised paid tier. Among the 22 priced tools we list in Finance & Fintech AI, the median entry price is $29 a month.

21% of Finance & Fintech AI tools in the directory offer a free tier, and this is one of them.

Compared against every priced listing in Finance & Fintech AI, recalculated as the catalogue changes. Method and the full market breakdown are in our AI tool pricing study.

Pros & cons

Pros

  • Named, credentialed founder with a stated institutional track record
  • Free core app removes the cost of evaluating the signals yourself
  • Nearly 5,000 published picks since 2023 is a real, checkable history

Cons

  • Headline performance figures lead; the simulated-results disclosure comes after
  • A backtested win rate is not the same claim as real audited returns
  • No stated regulatory registration for the investment research itself

How it compares

ToolRatingFreeFromBest known for
Prospero.ai (this tool)3.0YesFree10,000+ AI/ML models generating stock signals
Danelfin3.9Yes$22/moAI Score (1-10) ranking thousands of US stocks and ETFs by market-beating probability
StockNews.AI3.8YesFreeSentiment and importance scoring on curated financial news
Composer4.0Yes$32/moNo-code symphony builder for rules-based trading strategies

Alternatives to Prospero.ai

4 tools matched to Prospero.ai on what they do, their category and their price.

Frequently asked questions

What is Prospero.ai?
Prospero.ai is a free stock analysis app for retail investors, running more than 10,000 AI and machine learning models across millions of data points to generate signal-driven stock picks, trend recognition and institutional sentiment analysis, delivered through a mobile app and paid Substack newsletters.
Is Prospero.ai free?
Yes, Prospero.ai offers a free plan. Paid plans unlock more features and higher usage limits.
What are the best Prospero.ai alternatives?
The closest matches in the directory are Danelfin, StockNews.AI, and Composer, compared side by side above.

Reviews

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