Zen Ratings vs I/O Fund
By Jay Rocco, Chief Editor, FullStack Alpha. Updated . Prices checked on each vendor's own site.
Quick answer
Zen Ratings does everything I/O Fund does plus stock screener plus price forecasts. Pick I/O Fund only if its workflow suits you better.
Key differences
- Cheaper paid plan: Zen Ratings ($19.50/mo vs $33.25/mo)
- Broader feature set: Zen Ratings (5 vs 3 core capabilities)
Pick Zen Ratings if
- You scan the market with filters every day
- You want AI price forecasts
- Ranking stocks with a quant score
- Following top rated analysts
Pick I/O Fund if
- Following a real-money AI stock portfolio
- Growth and tech stock research
- Trade alerts with buy zones
Side by side
| Feature | Zen Ratings | I/O Fund |
|---|---|---|
| Starting price | Free, paid from $19.50/mo | Free, paid from $33.25/mo |
| Free plan | Yes | Yes |
| Stock screener | Yes | No |
| AI trade signals | Yes | Yes |
| Price forecasts | Yes | No |
| Alerts | Yes | Yes |
| Fundamentals | Yes | Yes |
| Education | No | Yes |
Plans
Zen Ratings
- Free: Free
- Premium: $19.50/mo billed yearly
I/O Fund
- Free: One free article weekly
- Discovery: $399/yr
- Research Only: $549/yr
- Advanced Market Signals: $849/yr
Questions people ask
What is the main difference between Zen Ratings and I/O Fund?
Zen Ratings does everything I/O Fund does plus stock screener plus price forecasts. Pick I/O Fund only if its workflow suits you better.
Which is cheaper, Zen Ratings or I/O Fund?
Zen Ratings has the cheaper paid plan: $19.50/mo for Zen Ratings vs $33.25/mo for I/O Fund (monthly equivalent, checked Oct 2026).
Do Zen Ratings or I/O Fund have a free plan?
Both have a free plan.
Which is better for beginners?
Zen Ratings is the friendlier start.
Which has better AI features?
Zen Ratings goes deeper on AI with 2 AI features (AI trade signals, price forecasts).
Can I connect Zen Ratings or I/O Fund to ChatGPT or Claude?
Neither offers an MCP server or a public API right now.
Is Zen Ratings or I/O Fund better for active trading?
Zen Ratings has more of the active-trading toolkit: alerts, scanning, signals and charts.
Should I use both Zen Ratings and I/O Fund?
It can make sense. They overlap on only 3 core features, so one can fill gaps the other leaves.