prismCalc
Patrick LaClair Utilities iPhoneiPadiPod touchMacApple Watch
prismCalc is a free Utilities app for iPhone and iPad by Patrick LaClair. Rated 5.0/5 from 4 ratings. Requires iOS 26.0. Updated September 25, 2026.
- Rating
- 5.0
- 4 ratings
- Price
- Free
- on the App Store
- Size
- 70 MB
- Age 4+
- Updated
- Sep 25
- 2026 · v1.3.0
Screenshots
About prismCalc
Split a dinner bill in seconds. Check a discount before you buy. Compare loan payments side by side. prismCalc is the everyday calculator for the math that happens outside a spreadsheet — beautiful glass design, no ads, no tracking. **LIVE CALCULATION PREVIEW** • See the running result while you build an expression • Keep enough context on screen to catch mistakes before pressing equals **KEEP RECENT RESULTS CLOSE** • Dynamic Island can keep your last calculation visible while you switch apps • Widgets and quick actions help you get back to recent math without digging through the app • History lets you reuse prior calculator, tip, discount, loan, and conversion entries **CORE CALCULATOR** • Large calculator buttons with haptic feedback • Memory functions (M+, M−, MC, MR) with indicator dot • Long-press display to copy, double-tap to paste • Standard or alternate key layout — choose what feels natural • Display gestures for backspace, undo backspace, recall, clear, copy, and paste **EVERYDAY TOOLS (Pro)** • Tip & Split — tips, equal splits, rounded per-person totals, and by-share splits for uneven groups • Discount Calculator — original price, savings, sale price, and tax • Loan Calculator — mortgage, auto, student, and personal loans. Mortgages lead with the total monthly payment, with principal + interest and escrow (property tax, insurance, HOA) as immediate context. Includes payoff planning, extra-payment what-ifs, and full amortization details • Unit Converter — 38 length, weight, volume, and temperature units, with Metric, US Customary, and Imperial results grouped clearly **HISTORY & NOTES (Pro)** • Save, review, search, and filter past calculations • Name and pin saved calculations so important bills, payoff plans, and conversions are easier to find later • Mortgage scenarios save with full escrow context (property tax, insurance, HOA, escrow toggle) so reopening a saved payoff plan restores the exact inputs • Add notes to any calculation • Share calculations with notes via Messages, Mail, or any app • Lock important entries so they cannot be accidentally deleted • Optional iCloud Sync across devices **ALWAYS WITHIN REACH** • Home Screen widgets — small, medium, and large (all free) • Lock Screen widgets — accessory circular, rectangular, and inline (free) • Control Center widgets — quick actions for calculator, tip, split, discount, unit converter, loan, and copy last result • Siri Shortcuts — calculate tips, split bills, convert units including volume, and recall recent results • Apple Watch companion — calculator, tip, discount, and split right on your wrist with all 10 themes synced **THEMES AND LAYOUT** • Animated mesh gradient backgrounds with true glassmorphism • 4 free themes (Aurora, Calming Blues, Dark Glass, Pearl) plus 6 Pro themes • Square or round buttons, plus standard or alternate key layout **PRIVACY FIRST** • No tracking, no analytics, no ads, no account required • Your data stays on your device unless you choose optional iCloud Sync **ACCESSIBILITY** • VoiceOver, Dynamic Type, Increase Contrast, Reduced Motion, and alternative key layout Built by a solo developer. Thanks for supporting independent apps. Disclaimer: Calculations provided by prismCalc are for informational and illustrative purposes only. Results are estimates and do not constitute financial advice, guaranteed loan terms, or a commitment to lend. Actual rates and payments may vary based on lender-specific criteria. LaClair Technologies is not a financial institution.
What’s new
Version 1.3.0 · Updated September 25, 2026
Pick up where you left off. • Recover unfinished Tip & Split, Discount, Loan and Converter calculations, or clear a saved draft when you want a fresh start. • Set four personal tip percentages in Settings with prismCalc Pro. • Keep your entered values and selected tool when the workspace changes between compact and expanded layouts. • Refined calculation recovery and History behavior so reopening unchanged work does not create duplicate entries. • Compatibility and reliability improvements across iPhone, iPad and Apple Watch.
App privacy
The developer, Patrick LaClair, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to prismCalc
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| prismCalc | 5.0 / 5 (4 ratings) | Free | September 25, 2026 | |
| Prism: Calculator & Converter | – | Free | Aug 6, 2026 | Compare |
| Web Live Activities | – | Free | Oct 26, 2026 | Compare |
| Calc Engine | 5.0 / 5 (5) | Free | May 14, 2026 | Compare |
| Clippa - Clipboard History | – | Free | Jan 19, 2026 | Compare |
| Unit Converter Engineering Pro | 5.0 / 5 (3) | Free | Jan 22, 2026 | Compare |
| Dash Calc: Simple Fast Math | 5.0 / 5 (8) | Free | Oct 27, 2026 | Compare |
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