WorldStock vs RuinRisk
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WorldStock
Visualize global market performance with an interactive map and detailed tables. Track over 100 markets including equities, commodities, currencies, and cryptocurrencies. Customize the interface for a personalized view.
- Global Equity Performance Map
- Performance Table with custom periods
- Data for over 100 markets
- Commodities, Currencies, and Crypto tracking
- Bond Yields and Stock Futures
- Customizable interface
- Home Screen Widget (iOS 14+)
- Dark Mode (iOS 13+)
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“WorldStock” provides a summary of global markets performance. At a glance you can see what's happening in markets across the world. Supported iOS Features : • Home Screen Widget (iOS 14+) • Dark Mode (iOS 13+) Features : ---------------------------- Global Equity Performance Map ---------------------------- This map displays the performance of all the major global equity markets for today. The map interface helps you visualize the performance of global stock markets. ---------------------------- Performance Table ---------------------------- This table is useful to compare global markets performance easily. You can choose a period for which performance has been calculated. Available periods are : 15y, 10y, 5y, 3y, 1y, 6m, 3m, 1m, 1w, YTD ---------------------------- More than 100 markets data ---------------------------- More than 100 markets data are currently followed. Available markets: • Global Markets : Global, Developed, Emerging, Frontier, BRIC, Europe, Asia Pacific, Latin America, Africa, EAFE, Fear(VIX), European VIX • Developed Markets : US, Japan, UK, Germany, France, Canada, South Korea, Hong Kong, Singapore, Australia, New Zealand, Austria, Belgium, Ireland, Spain, Italy, Switzerland, Netherlands, Portugal, Denmark, Norway, Finland, Sweden, Israel • Emerging Markets : China, Brazil, India, Russia, UAE, Taiwan, Thailand, Philippines, Indonesia, Malaysia, Mexico, Chile, Argentina, Peru, Colombia, Greece, Czech Rep., Hungary, Turkey, Egypt, South Africa, Vietnam, Morocco, Pakistan, Poland, Qatar • Commodities / REIT : Commodity, Gold, Silver, Platinum, Oil, Brent Crude, Natural Gas, Wheat, Corn, Global REIT, US REIT, Japanese REIT, Australian REIT, European REIT, Asian REIT • Currencies : EUR/USD, USD/JPY, GBP/USD, USD/CHF, USD/CAD, EUR/JPY, AUD/USD, NZD/USD, EUR/GBP, EUR/CHF, AUD/JPY, GBP/JPY, CHF/JPY, EUR/CAD, AUD/CAD, CAD/JPY, NZD/JPY, AUD/NZD, GBP/AUD, EUR/AUD, GBP/CHF, EUR/NZD, AUD/CHF, GBP/NZD, USD/SGD, USD/HKD, USD/DKK, GBP/CAD, USD/CNY, USD/INR, USD/IDR, USD/MYR, USD/KRW, USD/TWD, USD/ARS, USD/BRL, USD/MXN, USD/CZK, USD/NOK, USD/PLN, USD/RUB, USD/SEK, USD/EGP, USD/ILS, USD/ZAR, NZD/CHF, CNY/USD, AUD/GBP, GBP/EUR, EUR/SEK, EUR/NOK, CAD/CHF, NZD/CAD, US Dollar Index • Cryptocurrencies : Bitcoin, Ethereum, XRP, Litecoin, Bitcoin Cash, BNB, Solana, TRON, Dogecoin, Cardano, Avalanche, Chainlink, Stellar Lumen • Bond Yields : 10-Year Government Bond Yields US, Japan, UK, Australia, Germany, France, Italy, Canada, Netherlands, Spain, Switzerland, Mexico, Portugal, Greece, Hong Kong, India, Brazil, Singapore, South Africa, New Zealand, Russia, South Korea • Stock Futures : E-mini S&P500, E-mini NASDAQ, E-mini Dow ---------------------------- Easy to Customize ---------------------------- You can customize the map interface and background color. Note : * The market data is not in real time. * You can not add your favorite stocks. ---------------- Report a Problem --------------- If you have any problems, please sent me an email. [app@myindex.jp]
RuinRisk
Visualize your investment and trading risk with this intuitive calculator. Easily adjust parameters like risk per trade and win rate to understand your probability of ruin. Offers both basic and advanced analysis modes for beginners and experienced traders.
- Probability of Ruin Simulation
- Heatmap Risk Visualization
- Monte Carlo Simulations (Pro Mode)
- Maximum Drawdown Estimation (Pro Mode)
- Drawdown Probability Analysis (Pro Mode)
- Strategy Comparison
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RuinRisk shows how likely a trading plan is to wipe out your capital, and how deep the drawdowns along the way can get. Enter three numbers and the result updates as you move the sliders. THREE INPUTS • Win rate • Risk:reward ratio • Capital risk (the share of your capital you risk on each trade) Set each one with a slider or type the value directly. All three move in steps of 0.1 and are remembered the next time you open the app. FREE: LEGACY MODE • CALC: Risk of ruin, defined as the probability of losing all of your capital, calculated instantly from your three inputs. • HEATMAP: A color-coded risk-of-ruin table. Choose which parameter to hold fixed, pinch to zoom, and double-tap to return to the default zoom. • A short walkthrough appears on first launch and can be reopened anytime from the button at the top right. PREMIUM: PRO MODE Pro mode is unlocked with a one-time in-app purchase. It is not a subscription. • CALC: Ruin is defined as your capital falling to a level you choose (50% by default; 30% and 20% are also available). The theoretical value is shown next to a log-growth estimate, along with the difference between the two. • HEATMAP: Marks your current settings on the map, compares which of the three inputs drives your risk the most, and shows how far the risk of ruin would fall if you changed one input on its own. • ANALYSIS: Monte Carlo simulation of maximum drawdown over 100, 500 or 1,000 trades, with the probability of a 10%, 20%, 30%, 50% or 70% drop from the peak. Results are summarized from three perspectives: ruin probability, Monte Carlo drawdown, and position sizing against the Kelly criterion. • MATRIX: A table of drawdown probabilities from 5% to 100% across 100, 500 and 1,000 trades. Save up to five plans, compare them side by side, apply a saved plan to your inputs, and export the table as a CSV file. • Settings: Ruin definition, compounding on or off, simulation quality (1,000, 10,000 or 100,000 runs), and the percentile used for maximum drawdown (50th, 75th or 95th). Legacy and Pro define ruin differently, so the same inputs give different numbers in each mode. The app explains the difference on screen. WHO IT'S FOR • Traders who want to check a position size before putting real money at risk • Anyone comparing approaches with different win rates and risk:reward ratios • People learning money management who want to see how the numbers move GOOD TO KNOW • No ads, no account and no tracking. Your inputs and saved plans stay on your device. • Supports VoiceOver and larger text sizes. • For iPhone and iPad. Requires iOS 18 or later. • Available in English and Japanese. RuinRisk is a calculation tool for education and reference. Its results are theoretical values and simulations based on the numbers you enter. They are not investment advice, and they do not predict or guarantee future results. Trading involves the risk of loss.
Screenshots
Verdict
The clearest difference is price: RuinRisk at Free against WorldStock's $2.99. RuinRisk also leads on review sentiment (80% vs 67%). WorldStock's advantage is rating (5.0 vs 4.0) and in-app purchases (none vs 1). On ratings volume, update cadence, ads and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
RuinRisk is free to download; WorldStock costs $2.99 up front. RuinRisk sells 1 one-off in-app purchase. WorldStock asks for nothing beyond the download.
WorldStock holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews complicate that: 67% of WorldStock's written reviews are positive against 80% of RuinRisk's, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 3 months. Both last shipped on November 1, 2026.
| Parameter | WorldStock | RuinRisk |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (2 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 66.7% of reviews | 80.0% of reviews — better |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Paid |
| Best chart rank | #200 — better | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 12 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | myINDEX | RYUICHIROU SHIMONO |
Customer experience
WorldStock
RuinRisk
In-app purchases
WorldStock
No in-app purchases
RuinRisk
- RuinRisk Premium$2.99









