Apps Like Castella for iPhone and iPad
Ranked alternatives
Showing 181–200 of 1,000 ranked alternatives.


Heating Pipe Size
Sebastjan Valic
Estimate diameter and calculate pressure drop
Estimate diameter for hydronic systems by inputting or cooling output, water flow, and temperature values. Select material to get recommended DN . Calculate pressure drop and determine pump flow and head requirements.


احفظ القرآن - Ehfaz Al Quran
Ealamy Co.
Record Quranic verses in stages
Learn Quranic surahs through the Louh method. Divide surahs into multiple tablets, each containing 6 verses. Memorize verses in 4 stages with audio segments arranged hierarchically. Repeat and review audio sections for retention.

Heating & Cooling HVAC Pro+
Watsco, Inc.
Access product info and tools anytime
Link to your & Supply account to view pricing, order status, and real-time product availability at your preferred branch. Access tools for managing orders and tracking inventory across multiple locations.








HVAC Refrigerant PT
Cyberprodigy LLC
HVAC/R pressure-temperature reference tool.
The app provides pressure-temperature reference data for 55 refrigerants, including PT charts and superheat/subcooling calculations. It offers detailed refrigerant information and works offline without requiring an account or ads.

Astrolabe Clock
Michael Smith
View the sky and celestial bodies.
The app displays the sky and shows the time of day, day of year, and the location of celestial bodies. It provides sunrise and sunset times, Moon phase, and transit times for celestial objects.



How we rank alternatives
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