Radisize vs Markday

Radisize is the modern way to calculate the correct radiator size for every room in your home or project. Whether you are renovating, upgrading your heating system, or working professionally, Radisize gives you clear BTU and kW requirements based on real room details. Simply add a property, enter each room’s dimensions, glazing, walls, and floor materials, and Radisize automatically calculates the radiator output needed at either ΔT35 or ΔT50. All calculations are done offline on your device. FEATURES • Room-by-room radiator sizing Enter room type, dimensions, glazing and materials to get accurate BTU and kW requirements. • Multiple properties Create and manage as many properties as you need for your home, rentals, or client work. • Guided room setup A simple three-step wizard makes entering each room’s details quick and easy. • Accurate BTU and kW outputs Calculations use realistic heat-loss logic and your preferred radiator rating (ΔT35 or ΔT50). • Customisable settings Choose metres or feet, set your default ΔT, adjust the safety factor, and pick light, dark or system theme. • Professional PDF reports Export clean, organised reports for an entire property containing every room’s radiator requirement. Ideal for planning, quotes and documentation. • Offline-first No account, no internet, no data sent anywhere. Everything is calculated locally on your device. WHO IT'S FOR Homeowners and DIY renovators Plan heating upgrades confidently, understand your home’s requirements, and choose the right radiators without guesswork. Heating engineers and installers Get quick on-site estimates, generate structured PDF reports, and keep multiple properties organised. WHAT RADISIZE CONSIDERS • Room dimensions (metres or feet) • External wall count • Wall construction type • Floor and ceiling types • Glazing area and window type • Safety factor • ΔT35 or ΔT50 radiator rating Every detail is used to provide a more reliable radiator requirement. Radisize offers a clean and modern design that makes complex heating calculations simple and approachable for everyone. No subscriptions. No login. No hassle. Just fast, clear radiator sizing. Use of this app is subject to Apple’s Standard Licensed Application End User License Agreement (EULA), available in the App Store under “License Agreement” and at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Download Radisize today and find the right radiator size for every room. Disclaimer: Radisize provides estimation guidance only. Results are approximate and do not replace professional design or safety advice. Always consult a qualified heating engineer and follow local building regulations before purchasing or installing any heating equipment.

Mark the days that matter. Markday is a Lock Screen and Home Screen countdown widget that quietly counts the days until what matters most — birthdays, anniversaries, weddings, trips, exam dates, and personal milestones. Beautifully native to iOS. Quiet by design. No clutter. No urgency colors flashing at you. No endless calendar grid to scroll through. Just the day count, presented quietly. Add an event in seconds, pick a category and an icon, and watch the days count down on a Home Screen or Lock Screen widget that respects your wallpaper, your battery, and your attention. Why people choose Markday - Calm, modern design that feels at home on iOS 17 and later, on iPhone and iPad - Multi-event dashboard, sorted by what is closest, with custom group labels you create yourself - Quiet, human-written notifications you can set for one week, two weeks, three weeks, one month, two months, or six months ahead - Yearly auto-rollover for birthdays, anniversaries, and other recurring days, so the next year is always ready - Lock Screen and Home Screen widgets that update when the day changes, not when an ad refreshes - Optional iCloud sync to keep countdowns aligned across your iPhone and iPad - Light and dark mode with a manual override, full Dynamic Type, and VoiceOver from the first day - Available in English, Turkish, French, Spanish, German, and European Portuguese Privacy you can verify Markday collects no personal data. There are no analytics, no advertising trackers, no third-party servers, and no account to create. When iCloud sync is on, your countdowns sync only to your private CloudKit database — nobody at Markday can read them. The app works fully offline. If you opt in, Markday can read birthdays and selected events from your Calendar so you do not have to retype them, and it can also push your countdowns back into Calendar so they appear alongside the rest of your schedule. You stay in control of what comes in and what goes out. Markday Pro Most people will be happy on the standard tier. If you want more, Markday Pro unlocks: - Unlimited countdowns - Unlimited reminders per countdown, with multiple lead times (free tier includes 1) - Up to 15 custom group labels (free tier includes 1) - Calendar import from your existing events and birthdays - Calendar export to publish countdowns to Calendar - Future Pro features as they ship, included Designed for the day-to-day Built natively for iOS 17 and beyond with SwiftUI, SwiftData, and CloudKit. Widgets that update when the day changes, not when an ad refreshes. Mark the days. Forget the noise. Use of this app is subject to Apple's Standard Licensed Application End User License Agreement (EULA), available in the App Store under "License Agreement" and at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/