★ BEST INVESTING TOOLS COMPARISON ★
VOL. XCIV, NO. 247
Tool details checked August 23, 2026
Tool Comparison
The Fly Pro vs Tweenvest
Pick The Fly Pro if
The Fly Pro
Free • From $31/mo · Web · API
- Delayed quotes won't cut it; you need real-time data
- You want an API so you can script or automate things
- You care about stock comparison, ETF screeners, and macro data, things Tweenvest doesn't offer
Pick Tweenvest if
Tweenvest
Free • Paid plans available · Web
- You care about portfolio, dividends, and scores, things The Fly Pro doesn't offer
- You're a long-term investor who cares more about fundamentals than headlines
Skip both if: Neither one clicks with how you research; there are strong third options.
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Our take
The bottom line
The Fly Pro and Tweenvest cover a lot of the same ground (9 shared categories, including screeners, data visualizations, and watchlist), so for the basics you won't go far wrong with either. The real difference is focus: only The Fly Pro gives you stock comparison and ETF screeners, and only Tweenvest gives you portfolio and dividends.
What readers say
The Fly Pro
No votes yet. Cast the first one.
Tweenvest
No votes yet. Cast the first one.
Key differences at a glance
- Real-time data
- The Fly Pro
- Free trial
- The Fly Pro7 days
- API access
- The Fly Pro
- Free plan
- Both
See for yourself
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.ShowHide
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free • From $31/mo | Free • Paid plans available |
Free tier | Yes | Yes |
Free trial | 7 days | — |
Plan limits | 8 limits: Premium Annual: regular monthly equivalent usd: 62, Premium Annual: promotion: Limited-time 50% off +6 more | 19 limits: Basic: coverage: US & Spain, Basic: history: 5 years +17 more |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | No |
API access | Yes | No |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | — | Retail Traders, Pro Retail +5 more |
Categories covered | 13 | 15 |
Regions | North America, Europe | North America, Europe, APAC, LatAm, Middle East, Africa |
| Data & capabilities | ||
Data quality | Latency: Real-time and End of Day and Granularity: EOD | Latency: End of Day and Granularity: EOD |
Capabilities | — | Universe builder |
| Try it | Visit The Fly Pro | Visit Tweenvest |
Where each one shines
What The Fly Pro and Tweenvest each do best.ShowHide
Where each one shines
What The Fly Pro and Tweenvest each do best.What The Fly Pro does best
- Build company dashboards and financial charts.
- Screen stocks and ETFs with fundamental and performance filters.
- Research more than 10,000 business metrics and KPIs on Premium and higher plans.
- Review 10 years of financial data on Free and Premium or up to 30 years on Ultimate.
- Compare company operating metrics and financial data.
What Tweenvest does best
- Research coverage for companies through dashboards that combine tables, charts, financial data, estimates, filters, news, and valuation context.
- Screeners, watchlists, and favorites lists to organize research ideas, with limits expanding materially by plan.
- Tracking portfolios with performance, dividend context, and upcoming-event notifications, with portfolio capacity increasing on Pro+ and higher plans.
- Set stock price alerts and receive a notification when a target price is reached.
- Compare portfolio performance with a stock or ETF benchmark.
Every detail we compared
Every tracked attribute for The Fly Pro and Tweenvest, side by side.ShowHide
Every detail we compared
Every tracked attribute for The Fly Pro and Tweenvest, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFs | StocksETFs |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Target audience | Not specified | Retail TradersPro RetailLong-term InvestorsValue InvestorsGrowth InvestorsDividend InvestorsSwing Traders |
Regions | North AmericaEurope | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Coverage details | Identifiers: Ticker | Identifiers: Ticker |
| Data | ||
Data freshness | Real-timeEnd of Day | End of Day |
Data granularity | EOD | EOD |
| Plans & trust | ||
Capability signals | Not specified | Universe builder |
Vendor & support | The Fly Inc.Support: Email | TweenvestCountry: SpainFounded 2022 |
Curation ratings | Methodology 3/5Reliability 4/5UX 4/5 | Not specified |
Green tags are exclusive to that tool in this comparison.
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.ShowHide
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.| Tier | ||
|---|---|---|
| Free plan | Free | Free“Basic”coverage: US & Spain · history: 5 years · +4 more |
| Entry paid plan | $31/mo“Premium Annual”regular monthly equivalent usd: 62 · promotion: Limited-time 50% off | €9.99/mo“Pro”coverage: US, CA, Europe, UK · history: 10 years · +4 more |
| Tier 2 | $37/mo“Premium Monthly”regular monthly price usd: 74 · promotion: Limited-time 50% off | €14.99/mo“Pro+”portfolios: Unlimited · positions: Unlimited |
| Tier 3 | $75/mo“Ultimate Annual”regular monthly equivalent usd: 150 · promotion: Limited-time 50% off | €19.99/mo“Unlimited”coverage: Worldwide · history: All · +3 more |
| Top plan | $90/mo“Ultimate Monthly”regular monthly price usd: 180 · promotion: Limited-time 50% off | — |
| Custom / enterprise | Contact sales“Institutional” | — |
| Free trial | 7 days | — |
Questions we keep getting
What's the difference between The Fly Pro and Tweenvest?
The Fly Pro leans toward screeners, data visualizations, and stock comparison, while Tweenvest puts more weight on screeners, data visualizations, and watchlist. They overlap in 9 categories, so for most people it comes down to workflow preference and price.
How much do The Fly Pro and Tweenvest cost?
Good news: both The Fly Pro and Tweenvest have free plans, so you can run them side by side and only pay if you hit a wall.
Does The Fly Pro or Tweenvest have an API?
The Fly Pro has an API for programmatic access and custom integrations. Tweenvest doesn't, so you're working through its interface.
Should I choose The Fly Pro or Tweenvest?
It depends on what you're after. Pick The Fly Pro if stock comparison and ETF screeners matter to you; go with Tweenvest if you'd rather have portfolio and dividends. And if you only need the basics both share, let price decide.
Does The Fly Pro or Tweenvest have real-time data?
The Fly Pro offers real-time data, which matters if you trade actively. Tweenvest runs on delayed or end-of-day data, which is perfectly fine for longer-term investors who don't live and die by the tick.
Which has a better stock screener: The Fly Pro or Tweenvest?
Both The Fly Pro and Tweenvest include stock screeners, and they differ more in interface than raw power; try both and see which one clicks for you.
Can I track my portfolio with The Fly Pro or Tweenvest?
Tweenvest handles portfolio tracking. The Fly Pro is really a research tool; you'd track your portfolio elsewhere.
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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.