JS vs YPM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JS
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A modern and intuitive calculator for determining the weight and cost of various metal profiles. Supported profiles: • Sheet / Plate • Angle • Channel • Double Channel (I-Beam) • Tee • Pipe • Round Rod • Square Rod • Hexagonal Rod • Hexagonal Pipe • Closed Profile (Box Section) Key features: • Precise Weight Calculation: Instantly calculate weight based on dimensions. • Material Database: Select from a predefined list of metals. • Cost Estimation: Estimate total price based on unit price input. • History & Export: Save your calculations locally and export them to professional PDF reports. • Modern Design: Light and dark theme support with a beautiful Liquid Glass interface. Who is it for? For professionals, engineers, and technicians who need fast and precise metal weight calculations - whether in the office, on the factory floor, or in the workshop.
YPM
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Live smarter with AI-powered life logging. Our app uses image recognition to automatically record your day—organizing events, tracking expenses, analyzing meals, and even writing your diary. Whether you're planning ahead or reflecting back, everything is seamlessly integrated to help you stay on top of your life. Features: - Auto life capture via AI image recognition - Smart event planning & dynamic checklists - Finance tracking & spending insights - Diet analysis from meal photos - Intelligent daily journaling Your life, beautifully documented. * AI recognition requires token consumption * Advanced analytical charts require a subscription Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: JS at none against YPM's 5. YPM's advantage is update cadence (every 4 days vs every 4 weeks) and iOS requirement (15.1 vs 26.0). On price, ads and device support 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. YPM sells 5 in-app purchases, starting at $4.99 per month. JS asks for nothing beyond the download.
JS ships an update every 4 weeks, YPM every 4 days. The most recent releases landed on September 26, 2026 and October 1, 2026 respectively.
| Parameter | JS | YPM |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 17 MB | 47 MB |
| Age rating | 4+ | 17+ |
| Developer | JS-METALS SP. Z O.O. | Chun Kin Lau |
In-app purchases
JS
No in-app purchases
YPM
- Subscription - Basic$4.991 Month
- Subscription - Fever$9.991 Month
- Subscription - Master$19.991 Month
- 40 Tokens$3.99
- 120 Tokens$8.99
