VOL. XCIV, NO. 247
BEST INVESTING TOOLS COMPARISON
Tool details checked August 23, 2026
Tool Comparison
MesoSim vs ORTEX
Pick MesoSim instead if
MesoSim
Free • From $1000/yr · Web · API
- You want backtesting and paper trading.
- You trade often and need tooling built for speed
Start here
ORTEX
Free • From $39/mo · Web · Mobile · API
- You want the cheaper way in: plans start at $39/mo instead of $83.33/mo
- Delayed quotes won't cut it; you need real-time data
- You do a lot of your research from your phone
Skip both if: Neither one clicks with how you research; there are strong third options.
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Our take
The bottom line
MesoSim and ORTEX cover a lot of the same ground (5 shared categories, including options, data visualizations, and APIs & data feeds), so for the basics you won't go far wrong with either. ORTEX simply does more: 16 categories to MesoSim's 7, including short interest, insider data, and quant, plus a mobile app. MesoSim counters by keeping things simpler.
What readers say
MesoSim
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ORTEX
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Key differences at a glance
- Cheaper paid plan
- ORTEX$39/mo vs $83.33/mo
- Broader coverage
- ORTEX16 vs 7 categories
- Mobile app
- ORTEX
- Real-time data
- ORTEX
- Global coverage
- ORTEX
- Beginner friendly
- ORTEX
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 $1000/yr | Free • From $39/mo |
Free tier | Yes | Yes |
Free trial | — | — |
Plan limits | 5 limits: Free: free runs: 25, Standard: backtests: Unlimited +3 more | 9 limits: API Trader: credits per month: 1,000, API Trader: rate limit: 1 req/s +7 more |
| Platforms & access | ||
Web app | Yes | Yes |
Mobile app | No | Yes |
API access | Yes | Yes |
Broker sync | — | No |
Integrations | MesoLive | Microsoft Excel (Add-in), Python SDK +1 more |
| Audience & fit | ||
Experience level | Intermediate, Advanced | Beginner, Intermediate, Advanced |
Best for | Pro Retail, Algo Traders +4 more | — |
Categories covered | 7 | 16 |
Regions | North America | North America, Europe, APAC |
| Data & capabilities | ||
Data quality | Granularity: Minute | 3 signals: Latency: Real-time and End of Day, Granularity: Minute and EOD +1 more |
Data partners | Cboe and Deribit | — |
Capabilities | 4 signals: Multi-leg options, Greeks +2 more | 4 signals: Universe builder, Multi-leg options +2 more |
Security | Status page | — |
| Try it | Visit MesoSim | Visit ORTEX |
Where each one shines
What MesoSim and ORTEX each do best.ShowHide
Where each one shines
What MesoSim and ORTEX each do best.What MesoSim does best
- Backtest options strategies through a low-code Strategy Definition workflow covering entries, exits, adjustments, fills, commissions, slippage, margin, and monitoring.
- Simulate documented instruments such as SPX, BTCUSD, ETHUSD, and higher-tier RUT, VIX, and GLD options where plan access supports them.
- Review 2D and 3D risk graphs, PnL, Greeks, and trace collection from the Position Monitor.
- Tools for exploring implied volatility surfaces with overlays such as open interest, volume, bid-ask spread, and Greeks where available.
- Black-Scholes-Merton valuation functions and solver tools inside strategy logic for projecting future Greeks, PnL, roots, and optimization points.
What ORTEX does best
- Monitor short interest and securities-lending conditions with utilization, cost to borrow, shares on loan, and percentage of free float on loan.
- Comparison tools for lending-based short-interest estimates with official U.S. exchange-reported short interest and European flagged-short disclosures.
- Tracking intraday and real-time estimates from ORTEX lender and broker data pools where plan access supports those views.
- Research coverage for options activity and flow signals using OPRA-sourced options data, with OPRA terms required before access.
- Rule-based Short Squeeze, EPS, RSI, MACD, and Company Events signals with historical performance shown beside each trigger.
Every detail we compared
Every tracked attribute for MesoSim and ORTEX, side by side.ShowHide
Every detail we compared
Every tracked attribute for MesoSim and ORTEX, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | OptionsCryptos | StocksETFsOptionsCurrencies |
Experience | IntermediateAdvanced | BeginnerIntermediateAdvanced |
Target audience | Pro RetailAlgo TradersDay TradersSwing TradersQuants/DevelopersInstitutional Investors | Not specified |
Regions | North America | North AmericaEuropeAPAC |
Coverage details | Identifiers: Ticker | Identifiers: Ticker |
| Data | ||
Data freshness | Not specified | Real-timeEnd of Day |
Data granularity | Minute | MinuteEOD |
Data partners | CboeDeribit | Not specified |
| Access & integrations | ||
API protocols | REST | REST |
API auth & delivery | Auth: APIKeyDocs | Auth: APIKeySDKs: Python |
Integrations | MesoLive | Microsoft Excel (Add-in)Python SDKMCP |
Export formats | JSON | CSV |
| Plans & trust | ||
Security & compliance | Status page | Not specified |
Capability signals | Multi-leg optionsGreeksIV surfaceStrategy backtests: Vertical and IronCondor | Universe builderMulti-leg optionsGreeksEarnings vol edge |
Vendor & support | Deltaray Research Ltd.Support: Email and Chat | Ortex Technologies LimitedCountry: United KingdomSupport: Email and Phone |
Curation ratings | Not specified | Methodology 4/5Reliability 4/5UX 4/5 |
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 | Freefree runs: 25 | Free |
| Entry paid plan | $1000/yr≈ $83.33/mo“Standard”backtests: Unlimited · paper trading accounts: 1 | $39/mo“Basic Annual” |
| Tier 2 | $1250/yr≈ $104.17/mo“Advanced”backtests: Unlimited · paper trading accounts: 2 | $49/mo“Basic Monthly” |
| Tier 3 | — | $99/mo“Advanced Annual” |
| Tier 4 | — | $149/mo“Advanced Monthly” |
| Tier 5 | — | €49/mo“API Trader”credits per month: 1,000 · rate limit: 1 req/s · +1 more |
| Tier 6 | — | €129/mo“API Quant”credits per month: 10,000 · rate limit: 5 req/s · +1 more |
| Tier 7 | — | €379/mo“API Developer”credits per month: 100,000 · rate limit: 50 req/s · +1 more |
| Top plan | — | Subscription“API Enterprise” |
| Custom / enterprise | Contact sales“FundPro” | — |
Questions we keep getting
What's the difference between MesoSim and ORTEX?
MesoSim leans toward backtesting, options, and data visualizations, while ORTEX puts more weight on short interest, insider data, and quant. They overlap in 5 categories, so for most people it comes down to workflow preference and price.
How much do MesoSim and ORTEX cost?
Good news: both MesoSim and ORTEX have free plans, so you can run them side by side and only pay if you hit a wall.
Which is better for beginners: MesoSim or ORTEX?
ORTEX is the friendlier place to start; its interface takes less getting used to. Both work fine once you're past the basics.
Can I use MesoSim or ORTEX on my phone?
ORTEX lists a dedicated mobile app, so it travels better. MesoSim doesn't list a dedicated mobile app; its documented access is web and API.
Do MesoSim and ORTEX have APIs?
Yes, both offer API access, so developers and quants can pull data programmatically or wire up their own integrations.
Should I choose MesoSim or ORTEX?
It depends on what you're after. Pick MesoSim if backtesting and paper trading matter to you; go with ORTEX if you'd rather have short interest and insider data. And if you only need the basics both share, let price decide.
What asset classes do MesoSim and ORTEX cover?
Both cover options. MesoSim also handles cryptos. ORTEX adds stocks, ETFs, and currencies on top.
Does MesoSim or ORTEX have real-time data?
ORTEX offers real-time data, which matters if you trade actively. MesoSim 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 covers international markets: MesoSim or ORTEX?
ORTEX has documented international coverage (North America, Europe, and APAC), so it's the safer bet if you hold non-US stocks. MesoSim is more region-specific, mainly North America.
Can I export data from MesoSim and ORTEX?
ORTEX exports to CSV. MesoSim is stingier about getting data out.
Is MesoSim or ORTEX better for day trading?
MesoSim is the one positioned more for active traders. ORTEX is the better fit if you care less about fast trading workflows and more about a calmer research process.
Which has a better stock screener: MesoSim or ORTEX?
ORTEX has a stock screener for surfacing ideas; MesoSim doesn't, and focuses its energy elsewhere.
Keep researching
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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.