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
Available on the App Store
For documents leaving your hands
Find supported private-data patterns, review every match before anything is written, then get a separate copy with an explicit result and a detailed receipt.
$19.99 launch price · $29.99 planned standard · Mac, iPhone & iPad · Windows coming soon; email me
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.
RangefinderInvest and CrucibleTrade use one-time licenses that verify offline; installed versions keep working and their data stays in local files. Excise PDF is one Universal Purchase through Apple, with documents processed on-device.
Kalman Software LLC is an independent software company in Fort Collins, Colorado. RangefinderInvest and CrucibleTrade began as tools the founder built for his own investing and trading. Excise PDF began with a need to redact a PDF without an Acrobat subscription.
[email protected]
Kalman Software