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Prospero.ai

Stock picks backed by AI signals and market insight.

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Finance & LegalFreeWe checked the prices on prosperoai.substack.com on 28 Sep 2026.

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What is Prospero.ai?

Stock picks backed by AI signals and market insight.

Who is Prospero.ai best for?

Prospero.ai is best for investors with their own strategy who want AI signals on US stocks to check their picks.

  • Investors with a strategy

    The maker says its signals work best for intermediate and experienced investors who fold them into a strategy they have already tested.

  • Checking a stock before a trade

    Search a ticker to see its 5 short-term and 5 long-term signals before you buy, hold or sell.

  • Watchlist monitoring

    The app sends an alert when the signals on a stock you follow change, so you do not have to recheck it daily.

  • Picks by email

    The free Investing Newsletter tier sends weekly bull and bear picks, and the paid letters add midweek moves or near-daily trade ideas.

How much does Prospero.ai cost?

Prospero.ai's stock-signal app is free on iPhone and Android, and its two paid newsletters cost $9.99 a month for the Investing Newsletter or $20 a month for the Trading Letter.

App$0Free forever
  • 5 short-term and 5 long-term signals for US stocks and ETFs
  • Alerts when a watchlist stock's signals change
  • Stock screeners and an in-app learning guide
Investing Newsletter$9.99Per month
  • Real-time midweek moves in subscriber chats
  • Bonus momentum stocks on Sundays
  • Market drivers, a screener and momentum picks on Thursdays
Trading Letter$20Per month
  • Trade ideas almost every trading day
  • Subscriber-only posts and the full archive
  • The CEO replies to personal educational emails

Billed yearly, the Investing Newsletter is $99.99 and the Trading Letter $200. Both newsletters are sold through Substack and have a free tier: the Investing Newsletter's sends the weekly bull and bear picks and an investing lesson, while the Trading Letter's free posts are light. Both also offer a Founding Member tier. Full pricing on prosperoai.substack.com. We checked these prices on .

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What are the best Prospero.ai alternatives?

Two tools on Recaply do Prospero.ai's job.

Questions about Prospero.ai

What is Prospero.ai?

Stock picks backed by AI signals and market insight.

Who is Prospero.ai for?

Prospero.ai is best for investors with their own strategy who want AI signals on US stocks to check their picks.

Is Prospero.ai free?

Yes. The Prospero.ai app is free on iPhone and Android, and the maker says it will stay free. Only the optional newsletters cost money: $9.99 a month for the Investing Newsletter and $20 a month for the Trading Letter, both with a free tier.

How much does Prospero.ai cost?

Prospero.ai's paid plans are Investing Newsletter at $9.99 per month and Trading Letter at $20 per month.

What are the best Prospero.ai alternatives?

The closest alternatives on Recaply are Danelfin and AltIndex.

Where can I try Prospero.ai?

On its official website, prospero.ai.

Can I buy stocks through Prospero.ai?

No. Prospero.ai is not a brokerage, so you cannot deposit money or place trades in it. You use its signals, screeners and alerts for research, then trade through your own broker.