Track your fertility using the Billings Ovulation Method® with daily entries and chart sharing. Access premium features like direct teacher contact, chart printing, and custom color palettes through a subscription.






215+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our billings list covers 215+ iPhone apps updated through July 2026. Compare ratings, prices, and screenshots in one place.






Track your fertility using the Billings Ovulation Method® with daily entries and chart sharing. Access premium features like direct teacher contact, chart printing, and custom color palettes through a subscription.






Streamline your freelance or small business operations with this app. It helps you create estimates, track time and expenses, and send professional invoices. Manage client accounts and payments efficiently to get paid faster.





Access a comprehensive, interactive mobile experience for local parks and recreation. View activity guides, register for programs, reserve shelters, and explore parks and trails. Receive notifications for events and cancellations.


Access local news, sports, and community stories from Montana. Enjoy exclusive commentary, photography, and podcasts. Subscribers can upgrade to an ad-free premium experience.






Streamline wholesale fashion orders with this app, designed for brands to manage collections, create purchase orders, and track sales. Eliminate paper linesheets and faxes for a faster, more efficient ordering process at trade shows and showrooms.


Access your complete health record in one convenient location. View lab results, medications, appointments, and communicate securely with your doctor's office. Request prescription renewals and manage your health information easily.


Monitor your website's Google Search Console performance directly from your iPhone with customizable home screen widgets. Track key metrics, compare data periods, manage sitemaps, and gain insights with AI-powered analysis.






This app helps users track daily observations related to a specific fertility awareness method. It allows for easy viewing of cycle graphs on various devices and facilitates sharing information with partners and instructors. It is intended for users already familiar with the Billings Ovulation Method.


Access content designed to foster spiritual growth and community connection. This application supports users in their journey of knowing, growing, and serving through faith.


Create professional invoices, estimates, quotes, and receipts quickly and easily. Choose from over 100 templates, add your logo, and get paid faster through online payment options. This app offers unlimited cloud storage and automatic backups.


Manage your finances conveniently from your mobile device. Check account balances, review transaction history, and transfer funds with ease. Securely pay loans and deposit checks on the go.


This app simplifies billing operations for small and medium-sized businesses. It allows for the creation of quotes and invoices, management of recurring payments, and automation of billing cycles. Gain business insights and manage customer subscriptions from your mobile device.


This app helps professionals track their time and expenses for billing purposes. It offers flexible billing rates, powerful rounding options, and detailed reporting. It's designed for consultants, attorneys, and contractors who need to manage their billable hours and costs efficiently.


Track your fitness routines and schedule appointments from any location. View your workout history and upcoming sessions within the application.


This app helps small businesses, contractors, and freelancers manage their finances. It allows for the creation of invoices, estimates, receipts, and purchase orders. Users can track expenses, manage inventory, and generate detailed business reports.


Manage your finances on the go with this secure mobile banking application. Organize transactions, set alerts, make payments, transfer funds, and deposit checks remotely. You can also manage your debit card and access electronic statements.