prismCalc vs Web Live Activities
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
prismCalc
This app offers a visually appealing and functional calculator for everyday financial tasks like splitting bills, calculating discounts, and comparing loan payments. It provides live calculation previews, a history of recent results, and various everyday tools.
- Live calculation preview
- History of recent results
- Tip and split bill calculator
- Discount calculator
- Loan calculator
- Unit converter
- Customizable themes
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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.
Web Live Activities
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Web Live Activities brings real-time updates to the places you actually look: the Lock Screen, the Dynamic Island, and the Apple Watch Smart Stack. Start a Live Activity and watch it update live, an order on its way, a score changing, a countdown ticking down, a status moving forward, without unlocking your phone or opening an app. WHAT YOU CAN TRACK • Progress: orders, deliveries, rides, downloads, and multi-step tasks, shown as a bar or a clear step-by-step checklist. • Versus: two sides with live scores and logos for games, matches, and auctions. • Countdown: a clock that ticks down on your device to a launch, a drop, or a kickoff. • Picture: a photo-forward card for arrivals, listings, and live moments. HOW IT WORKS Tap a "Track with Live Activity" button on a participating website, scan a QR code, or pick a featured example right inside the app. The Live Activity appears on your Lock Screen and Dynamic Island in seconds and keeps itself up to date. Turn any activity on or off whenever you like. FOR DEVELOPERS Add native iOS Live Activities to your product straight from your backend with a few HTTP calls. Start an activity, update it as things change, and end it when the job is done, and it renders natively on your users' devices. Group your users, send quiet or alerting updates, and keep long-running activities alive. Full documentation is built into the app. PRIVATE BY DESIGN No tracking, no ads, and no account required. We use an anonymous identifier only to deliver the Live Activities you choose to receive, and you can clear everything from the app at any time. See our Privacy Policy for the details. Install once, and the apps and sites that support Web Live Activities can keep you updated at a glance.
Screenshots
Verdict
The clearest difference is in-app purchases: Web Live Activities at none against prismCalc's 1. Web Live Activities also leads on iOS requirement (18.0 vs 26.0). prismCalc's advantage is device support (4 vs 2). On price, update cadence and ads 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
Both are free to download. prismCalc sells 1 one-off in-app purchase. Web Live Activities asks for nothing beyond the download.
prismCalc ships an update weekly, Web Live Activities every 10 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | prismCalc | Web Live Activities |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Weekly — better | Every 10 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, Mac, Apple Watch — better | iPhone, iPad |
| Requires iOS | 26.0 | 18.0 — better |
| Further details — not scored | ||
| Size | 70 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Patrick LaClair | Eldrbreak |
In-app purchases
prismCalc
- prismCalc Pro$2.99
Web Live Activities
No in-app purchases
Questions
Is prismCalc free?
Is Web Live Activities free?
Do prismCalc or Web Live Activities have ads?
Which is updated more often, prismCalc or Web Live Activities?
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