232+ iOS apps curated and reviewed
The best seconds pro apps on iPhone average 4.6★ across 232+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.
This interval timer app is designed for high-intensity interval training (HIIT), Tabata, and circuit training workouts. It features a large, color-coded display, customizable interval names, and background operation. It also integrates with Apple Health to track your fitness data.
This app provides a versatile interval timer for various workout types like Tabata, HIIT, and circuit training. It features a clear, full-screen display, customizable alerts, and background operation. Users can also utilize a stopwatch and countdown timer, with integration for Apple Health.
Create custom workout timers with adjustable intervals for exercise and rest. Track your progress with detailed history and statistics, and repeat past workouts easily. Enjoy audio cues without interrupting your music.
This interval training app supports HIIT, circuit, and Tabata workouts with customizable rounds and cycles. It offers background operation, screen flashing, and voice guidance for an enhanced fitness experience. An Apple Watch companion app is also available.
Create and follow custom interval training routines for various fitness activities. This app offers extensive customization for intervals, alerts, and goals, with seamless integration for Apple Watch and Apple Health.
This app helps you manage workout intervals with customizable work and rest periods. It runs in the background and allows music playback, with options to save settings and share progress. Integrates with Apple Health for heart rate monitoring.
This app is a versatile interval timer designed for high-intensity interval training (HIIT) and Tabata workouts. It features an interactive coach, customizable alerts, music control, and integration with Apple Health for progress tracking.
Create and guide custom interval training routines with this app. It supports timed and rep-based exercises, offers voice coaching, and logs your workout history with detailed analytics. Track progress over time and organize routines into training plans.
Manage multiple countdowns and count-ups simultaneously with customizable timers for any task. Organize your time with flexible layouts, personalized alerts, and easy sharing options. Optimize productivity for work, study, or daily activities.
Sell your pre-loved items and discover unique finds from other members. Easily list clothes, accessories, and more, keeping 100% of your earnings. Shop for second-hand treasures with buyer protection for a secure and sustainable shopping experience.
This app provides a customizable interval timer for high-intensity interval training (HIIT) and circuit workouts. Easily set up work, rest, and repeat intervals, track your progress, and integrate with your health data. Enjoy your workouts with background music and notifications.
Track multiple time intervals simultaneously with this advanced stopwatch and countdown tool. Organize your timers with named, color-coded entries, add comments to laps, and group them into folders. Export your data to CSV for further analysis.
This app transforms your device into a stylish LED bedside clock with customizable skins and dynamic time displays. It offers alarm functionality, voice time broadcasts, and a countdown timer, perfect for your desk or nightstand.
This app helps you track gym sessions and manage rest times between sets. It's designed for use on a smartwatch, allowing you to leave your phone behind. The app alerts you when it's time to train again, ensuring your workout flows smoothly.
This app provides a versatile interval timer for high-intensity interval training (HIIT) and Tabata workouts. It offers professionally designed routines, custom interval creation, and progress tracking, making fitness accessible anywhere.
This app offers 21 engaging games designed to teach second-grade curriculum subjects like math, language, and science. It uses colorful visuals, voice narration, and interactive elements to make learning fun and effective for young students.
Create a private second phone line for texting and calling without using your personal number. Ideal for online selling, dating, or business, it offers features like call recording and local area codes. Avoid roaming charges by calling over Wi-Fi.
Obtain a secondary phone number for private calls and texts without revealing your personal information or using a physical SIM card. This app provides a global communication solution requiring only an internet connection.
Obtain a private second phone number for calls, texts, and voicemail. Protect your primary number when dating, selling online, or signing up for services. Enjoy HD calls, international calling, and AI-powered call summaries without extra SIM cards or contracts.
Easily add or subtract time values including hours, minutes, and seconds. Calculate durations with days, weeks, months, and years. This tool simplifies time-based calculations for various needs.