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.






248+ iOS apps curated and reviewed
Every iPhone needs a few good billings app. We benchmark 248+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 3.2★ (14) | No | Yes | Jul 2026 | |
| 2 | Free | 2.0★ (25) | No | Yes | Aug 2026 | |
| 3 | Free | 5.0★ (8) | No | No | Jul 2026 | |
| 4 | Free | — | No | No | Jul 2026 | |
| 5 | Free | — | Yes | No | Jul 2026 | |
| 6 | Free | — | No | No | May 2026 | |
| 7 | Free | 4.5★ (60) | No | No | Jul 2026 | |
| 8 | Free | 4.8★ (2.2K) | No | No | Aug 2026 |






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.








Listen to live radio streams, pause and rewind live audio, and access program schedules. Explore news, bookmark content for later, and use the alarm clock feature to wake up to your favorite station.


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.




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


Manage your finances on the go with this secure banking app. Easily deposit checks, make payments, transfer funds, and control your debit card. Receive balance alerts and find nearby branches and ATMs.




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


Manage your Fort Billings FCU accounts conveniently and securely from your mobile device. Perform transactions like checking balances, transferring funds, paying bills, and depositing checks anytime, anywhere. It's a free service for all enrolled members.




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.






Manage your child's gymnastics and swim activities with ease. This app allows for simple bill payments, class schedule checks, and registration for programs. Receive important updates and announcements directly to your device.


This app simplifies childcare operations for educators, enabling professional communication with families. It offers features like contactless sign-in/out, attendance tracking, daily reports, and secure photo/video sharing to enhance parent and staff experiences.