Comparison

UnderstandStock vs Selium Performance

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

UnderstandStock

Explore stock market data with clarity and simplicity. Access 30 years of financial history and visualize trends with interactive charts. Gain insights to make informed investment decisions.

Highlights
  • Simple stock research
  • 30 years of financial data
  • Interactive charts
  • Clear data visualization
  • Informed investment decisions
Features
Read full description

Research stocks in a simple, clear way. Review financial data for the past 30 years. View charts of data.

About

Selium Performance

Features
Read full description

Performance: Portfolio & Mind Analytics Performance is a unique portfolio management and psychological tracking tool built for traders who demand excellence. Whether you’re managing your own capital or reporting to a fund, the app delivers essential metrics to sharpen your edge. ________ Key Features • Detailed Portfolio Monitoring Track your account balance, equity, total return, drawdown, and current leverage* with visual clarity. Designed for managing multiple accounts. • Daily, Weekly, and Monthly Returns Understand your real performance over time using Time-Weighted Returns (TWR), Start and End Balance methods. • Deep Drawdown Analysis View current and max drawdowns, floating losses in a dedicated chart suite. Know where you stand before markets tell you. • Mental State Tracking Self-assess your psychological state daily. Analyze trends like fear, patience, FOMO with beautiful insights and correlation charts. • Risk & Overtrading Indicators Built-in alerts show you if you’re crossing your thresholds in leverage or daily & weekly p/l. • Keep clients in the loop (MAX users) The Client Edition lets you provide your clients with their own read-only monitoring suite — customizable by you — so they can stay up to date with their account performance. Mental state data remains private and is never shared. Access is anonymous and secure via a unique client key code — no sign-up required ________ Who It’s For • Retail traders seeking discipline • Prop traders needing structured reporting • Professionals optimizing performance • Funds looking for repeatable edge ________ We designed Performance for those who take trading seriously—who understand that edge isn’t just strategy, but mental clarity, risk control, and brutal self-honesty. ________ Please Note: some advanced features, such as multiple account support, client management and advanced charts, are available through a paid subscription. Basic functionality is free. * via the separate Selium Exposure App By using this app, you agree to Apple’s Standard End User License Agreement (EULA), available at: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

UnderstandStock4 screens
Selium Performance4 screens

Verdict

The call

UnderstandStock and Selium Performance are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. UnderstandStock sells 1 in-app purchase, starting at $19.99 per month and Selium Performance sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

UnderstandStock ships an update weekly, Selium Performance every 9 days. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

ScorecardNo meaningful differences
UnderstandStock versus Selium Performance: the parameters behind the verdict, then further details
ParameterUnderstandStockSelium Performance
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyWeekly — betterEvery 9 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 — better18.2
Further details — not scored
Size36 MB7 MB
Age rating17+4+
DeveloperMelvin RamSelium Ltd

In-app purchases

1 purchases

UnderstandStock

Subscriptions1
  • UnderstandStock Pro$19.991 Month
4 purchases

Selium Performance

Subscriptions4
  • Performance Pro Monthly14 Days trial$3.991 Month
  • Performance Max Monthly14 Days trial$7.991 Month
  • Performance Pro Yearly$39.991 Year
Show 1 more
  • Performance Max Yearly$79.991 Year

Questions

Is UnderstandStock free?
UnderstandStock is free to download, with in-app purchases available.
Is Selium Performance free?
Selium Performance is free to download, with in-app purchases available.
Do UnderstandStock or Selium Performance have ads?
Neither UnderstandStock nor Selium Performance shows ads.
Which is updated more often, UnderstandStock or Selium Performance?
UnderstandStock ships an update weekly, and Selium Performance every 9 days. Most recently, UnderstandStock was updated on November 4, 2026 and Selium Performance on October 30, 2026.

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