137+ iOS apps curated and reviewed
Finding the right btu apps can be overwhelming with so many options. We've analyzed 137+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (5) | No | No | May 2026 |
| 2 |  | Free | 4.6★ (288) | Yes | Yes | Jul 2026 |
| 3 |  | Free | 5.0★ (5) | No | No | May 2026 |
| 4 |  | Free | — | No | No | May 2026 |
| 5 |  | Free | 5.0★ (5) | Yes | Yes | May 2026 |
| 6 |  | Free | — | No | No | Jul 2026 |
| 7 |  | Free | 4.8★ (20) | No | Yes | May 2026 |
| 8 |  | Free | 4.8★ (17K) | No | No | Jul 2026 |
Monitor and control agricultural storage environments remotely. Securely access unit status, view detailed equipment data, and adjust control panel parameters with a familiar interface. Designed for ease of use with a simple human-machine interface.
Estimate the cooling capacity needed for your data center. This tool considers factors like space, occupants, and heat output to help you maintain optimal temperature and humidity. It provides instant results as you update inputs, serving as a guide for system selection.
This utility helps you determine the appropriate cooling capacity for an air conditioner based on room size and other factors. It simplifies the process of selecting the right unit to ensure optimal comfort and energy efficiency.
This app centralizes university online functions for students, employees, and guests. It offers features like webmail, Moodle access, news, course and grade management, and campus navigation to simplify daily university life.
This tool helps you calculate the right size for air conditioners, heat pumps, and furnaces. It provides detailed analysis of heating and cooling costs, energy consumption, and temperature data. You can also evaluate domestic hot water needs and financial aspects like payback periods.
This utility app simplifies HVAC sizing by calculating BTU/h capacity and recommending equipment. It offers unit conversions, price estimates, and energy consumption comparisons. Advanced features can be unlocked via in-app purchases.
This app provides an instant mobile refrigerant charge calculator for HVACR applications. It supports various refrigerants and allows users to calculate the correct system charge based on superheat, subcooling, or airflow, along with environmental conditions.
This utility helps you determine the optimal air conditioner BTU capacity for any room. It considers factors like area, ceiling height, occupancy, sun exposure, and electronics to suggest the ideal power, preventing under or overspending on energy.
Access a vast database of HVAC models, manuals, and part lists to speed up your work. Utilize an AI-powered troubleshooting tool or connect with experienced technicians for real-time support.
This utility app simplifies gas pipe sizing by performing calculations based on BTU load, run length, and gas type. It eliminates the need for manual chart and codebook referencing, providing the minimum required pipe size quickly.
Send and receive money easily using just a phone number. Manage your bank cards, view transaction history, and access exclusive offers. Integrates with HealthKit for personalized deals based on your activity.
This app allows users to select and purchase affordable internet packages tailored to their budget and needs. It offers flexible data usage without complicated rules and provides loyalty rewards and cashback.
Accurately calculate the heating requirements for any room in your home. This tool supports unlimited rooms, offers precise calculations in Watts and BTU, and features a clean, intuitive design with dark mode support.
This app simplifies complex natural gas and LNG unit conversions for industry professionals. It accurately converts over 90 volume, rate, and price units, offering precise results and composition-based estimates. Easily copy formatted results for reports and models.
