Three focused apps built around real questions: what exact trades put my portfolio back on target and does the model support the plan, am I improving as a trader, and did that private information truly leave the PDF?
One company · three focused tools
RangefinderInvestPortfolio & retirement
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CrucibleTradeTrading journal & risk
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Excise PDFRedact & verify
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Each app has its own workflow and visual identity. The ownership and privacy principles stay consistent.
Free 30-day trial
For long-term investors
Keep a multi-account household on target with exact Add / Reduce trades. Improve and validate the model behind them, then test whether it supports the household plan.
$99 launch price · $149 regular · macOS, Windows & Linux
Explore RangefinderInvest
Free 30-day trial
For active traders
One app for the whole trading day: size risk before entry, track it while positions change, close the day, and review execution against your own playbook.
$99 launch price · $149 regular · macOS, Windows & Linux
Explore CrucibleTrade
Coming to the App Store
For documents leaving your hands
Remove matched text from the PDF instead of covering it, scrub twelve hidden-data categories, then reopen the written file and read what the verification receipt found.
$9.99 launch price · $19.99 standard · Mac, iPhone & iPad
Explore Excise PDFEach product explains what stays on your device, what can use a network, and what a connected service may receive. The current products keep their databases or documents local.
Calculations, limits, verification results, and failure states are visible. You should not have to take a percentage, a risk score, or a redaction result on faith.
The current apps are one-time purchases because that fits how they work. RangefinderInvest and CrucibleTrade licenses verify offline; Excise PDF is planned as one Universal Purchase through Apple.
Kalman Software is an independent software company founded by a retired electrical engineer who spent decades reshaping spreadsheets with Excel, VBA, Power Query, and Python until they answered the investing and trading questions he actually had.
RangefinderInvest and CrucibleTrade grew from those working systems. Excise PDF began when the founder's wife needed to remove private information from a PDF without buying an Acrobat subscription. Each started as the tool he wanted in front of him; each is now being made clear enough for someone else to trust.
Questions still go to the person who writes the code.
hello@kalmansoftware.com
Kalman Software