Ethr Preview vs Construction Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ethr Preview
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Ethr Preview App helps developers, designers, and product teams explore the Ethr Design System in action. With 77+ modular React Native components, 5600+ customizable variants, and ready-made templates, Ethr empowers you to build accessible, brand-consistent apps faster than ever. Whether you’re a designer prototyping in Figma or a developer shipping in React Native, Ethr bridges the gap between design and code. Key Features: Interactive Playground – Try out 75+ components with 3000+ variants. Figma Library Integration – Sync your designs with developer-ready code. Dark & Light Modes – Instant theme switching with RTL support. Starter Templates – Kickstart flows like signup, cart, chat, and more. Community vs Pro – Explore free components or upgrade to unlock advanced kits. Who It’s For: Developers who want faster, cleaner app UI building. Designers who need a live preview of Figma components. Product teams aiming for consistency, accessibility, and speed. Start exploring Ethr today and experience how modern design systems streamline app creation.
Construction Calc
This offline calculator helps construction professionals and DIYers quickly estimate materials for various projects. It supports imperial and metric units, and all calculations are stored locally for privacy. No internet connection is required.
- Offline material estimation
- Calculates 8 key materials
- Feet-Inch-Fraction input
- Imperial & Metric units
- Local data storage
- No subscriptions or ads
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The only offline calculator you need on the job site. No internet? No problem. Contractor Calc works 100% offline — so you get fast, accurate material estimates right when you need them. Estimate 8 key materials in seconds: Concrete (slabs, footings) Drywall (sheets with waste) Paint (gallons & liters) Roofing (squares with pitch) Gravel & Mulch (cubic yards/m³) Tile (tiles with cuts) Insulation (ft²/m²) Stairs (riser, tread, stringer) Built for pros, trusted by contractors: • Feet-Inch-Fraction Input — enter 12' 6" like you measure • Imperial & Metric — switch units in Settings • No subscriptions. No ads. No cloud. • All calculations stored locally — your data stays private Perfect for: • Residential & commercial contractors • Carpenters, framers, roofers, painters • DIYers tackling big projects • Estimators preparing bids Join thousands of builders who ditched spreadsheets and paper calculators. Get precise, professional results — every time.
Screenshots
Verdict
The clearest difference is in-app purchases: Ethr Preview at none against Construction Calc's 1. On price, ads, device support and iOS requirement 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. Construction Calc sells 1 one-off in-app purchase. Ethr Preview asks for nothing beyond the download.
| Parameter | Ethr Preview | Construction Calc |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 63 MB | 3 MB |
| Age rating | 17+ | 17+ |
| Developer | VentureDive | Konstantin Khoroshun |
In-app purchases
Ethr Preview
No in-app purchases
Construction Calc
- Pro Features$0.99
Questions
Is Ethr Preview free?
Is Construction Calc free?
Do Ethr Preview or Construction Calc have ads?
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