Construction Calculator Pro 2 vs ResQMesh

The ultimate construction calculator trusted by contractors, builders, and tradespeople worldwide. All the calculations you need on the job site - working 100% offline without expensive subscriptions. EVERYTHING YOU NEED, NOTHING YOU DON'T - 10 Professional Calculators in One App - Works Offline - No Internet Required - US & European Standards (ACI, ASTM, Eurocode) - One-Time Purchase - NO MONTHLY FEES! COMPLETE CALCULATOR SUITE - Concrete Calculator - Volume, bags, mix ratios - Brick & Block - Quantity, mortar, patterns - Tile Calculator - Coverage, adhesive, grout - Paint Estimator - Coverage, coats, primer - Steel Rebar - Quantity, weight, spacing - Wood/Lumber - Board feet, joists, loads - Insulation - R-value, U-value, thickness - Stairs - Rise, run, stringers, code compliance - Roofing - Area, shingles, underlayment - Plumbing - Pipe sizing, slope, flow rates BUILT FOR THE FIELD Unlike desktop software or subscription apps that fail without internet, Construction Calculator Pro works everywhere - basements, new construction sites, remote locations. Your calculations, your device, no strings attached. PROFESSIONAL FEATURES - Quick Unit Conversion - Metric/Imperial toggle - Photo Integration - Document measurements - Save Calculations - Build project histories - PDF Reports - Professional estimates - Material Lists - Automated quantities - Cost Estimation - Track project budgets - Building Codes - US & EU standards WHO USES THIS APP - General Contractors - Estimate entire projects - Concrete Contractors - Calculate pours accurately - Framers - Determine lumber and fasteners - Electricians - Load calculations, wire sizing - Plumbers - Pipe sizing and slope calculations - DIY Enthusiasts - Professional results at home - Construction Students - Learn with real tools REAL FIELD TESTING Developed with input from actual contractors who were tired of: - Paying $50+/month for basic calculators - Apps that don't work without internet - Using 10 different calculators - Desktop software that's not mobile - Inaccurate free calculators KEY ADVANTAGES - Accuracy - Formulas based on industry standards - Speed - Quick access to any calculator - Reliability - Works anywhere, anytime - Value - One price for all features - Updates - Free updates with new features TECHNICAL SPECIFICATIONS - Supports both US (Imperial) and Metric units - Complies with latest building codes - Works on all iPhones and iPads (iOS 16+) - Optimized for one-handed operation - No account required - No data collection Join thousands of professionals who've eliminated subscription costs while getting better tools. Stop paying monthly for calculations you need daily. Buy once. Build forever.

ResQMesh keeps a team in touch where there is no mobile coverage. The iPhone connects over Bluetooth to a small LoRa radio board, and the boards pass messages, positions and ALERTs to one another, forming a mesh network with no network, no SIM and no Internet. IN AN EMERGENCY, CALL 112 FIRST Or the emergency number of your country. ResQMesh supports communication; it is not an emergency service and must not be the only way to ask for help. Messages, positions and ALERTs depend on the terrain, on batteries and on other boards switched on and within range: delivery is not guaranteed. THE ALERT Hold the ALERT button for three seconds: your position goes to every board of the network, and your board repeats it until another one confirms it. You see who confirmed, and the others see where you are, with distance and direction. The ALERT is always free: you can send it, receive it and confirm it without a licence. It also starts from the Action button, from Shortcuts and from the Apple Watch. FREE, NO LICENCE - The ALERT, sent, received and confirmed - APRS on 433 MHz: beacons, APRS conversations in the Chat tab and the stations your board hears, also on the map WITH THE ANNUAL LICENCE - Channels and private chats, with delivery confirmation and ready replies - Encryption on 868 MHz: network key and private messages encrypted by the app - The team on the map and in the network list, with how each board was heard - The network profile as a QR code: the whole team with the same radio settings, channels and network key in a few seconds - The channel check, to pick a free frequency before you go out - The LoRa APRS stations around you from the Internet - Apple Watch, CarPlay and Siri: read and send messages, follow an ALERT ENCRYPTION AND PROTECTION The capomaglia creates a network key and shares it with the network profile: on 868 MHz the boards encrypt channels, private messages and positions, and boards without the key cannot read them. Private messages can also be encrypted by the app for the operator they are written to, and the capomaglia approves, removes and readmits the operators of the network. ALERTs and Emergency-Net always stay in clear, so that anyone within range can read them. On 433 MHz encryption is not allowed and everything travels in clear. Every board is protected by a Bluetooth PIN: your iPhone keeps it and gives it at every connection, other phones need it to connect. MADE FOR THE FIELD - Works with the phone locked: notifications, Live Activity on the lock screen and in the Dynamic Island - Widgets for the board, active ALERTs and unread messages - History synced with iCloud across your devices, with private messages kept encrypted - The manual is inside the app and reads without a network - English and Italian, following the language of your iPhone - Try it without a board: the demo board shows the whole app with simulated traffic THE BOARDS ResQMesh works on Heltec Wireless Tracker, LilyGO T-Deck Plus, LilyGO T-Echo Plus, SenseCAP T1000-E, Elecrow ThinkNode M1 and M5Stack Cardputer ADV boards with the ResQMesh firmware, free on railab.com. On 433 MHz an amateur radio licence is required; on 868 MHz no radio licence is needed. ResQMesh is made by Railab Srl, Brescia, Italy. Licence: the annual subscription renews automatically unless cancelled at least 24 hours before the end of the period. You can manage or cancel it in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ResQMesh terms: https://www.railab.com/legal/resqmesh-terms.html Privacy policy: https://www.railab.com/legal/resqmesh.html