250+ iOS apps curated and reviewed
The best simply pic microcontroller apps on iPhone average 4.6★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $1.19 | — | No | No | Aug 2026 |
| 2 |  | Free | 5.0★ (2) | No | No | Aug 2026 |
| 3 |  | Free | 4.5★ (59) | No | No | Jul 2026 |
| 4 |  | Free | 4.7★ (8.3K) | Yes | Yes | Aug 2026 |
| 5 |  | Free | — | No | No | May 2026 |
| 6 |  | Free | 4.8★ (5) | No | No | Aug 2026 |
| 7 |  | Free | 4.5★ (2) | No | No | May 2026 |
| 8 |  | Free | 4.7★ (52) | No | Yes | Jul 2026 |
This app enables wireless control of microcontrollers like Arduino and ESP32 via Bluetooth Low Energy. It features a customizable remote interface, a serial console for real-time data monitoring, and device management tools for makers and hobbyists.
A large-display countdown timer for monitoring presentations or performances. It visually indicates time overruns by turning red and counting up, without audible alarms. Easily set for durations between 1 and 99 minutes.
Capture multiple photos with customizable delays, perfect for group shots or creative self-portraits. Set timers from 3 seconds to 1 minute apart and control flash settings. Easily save and share your captured moments.
This app helps you structure your workouts with customizable interval timers. Set work and rest periods, and repeat cycles for your training sessions.
Control smart clock and timer devices through a Bluetooth connection. This utility app allows for effective management of device functions, offering a seamless user experience for connected hardware.
This app offers a customizable countdown timer with a visual indicator, ideal for various tasks and productivity boosts. It features kid-friendly options, multiple sound and color choices, and integration with voice assistants.
Control and configure microcontroller projects wirelessly via Bluetooth. Browse, download, and load projects directly from your smartphone. Preview assembly instructions and control configurations before loading.
This application provides a clean, simple, and reliable timer for various timing needs, including cooking, sports, and work. It offers seamless integration with Apple Watch and Today Widgets, allowing for synchronized control and notifications.
This app offers a versatile timer and clock utility that can be displayed persistently on your device's screen, even on top of other applications. It features millisecond accuracy, a stopwatch, and countdown timers for various events.
This app provides a floating clock and timer that stays visible above all other applications. It's useful for tasks like online shopping, studying with Pomodoro timers, or cooking with real-time countdowns.
This utility app functions as a basic stopwatch. It allows users to start, stop, and reset the timer with simple button presses. Ideal for timing events or tasks.
This app provides multiple configurable timers for various uses, from scientific experiments to everyday tasks like cooking and workouts. It features a clear display, customizable labels, and the ability to repeat count-down timers.
This utility app allows you to easily manage multiple timers simultaneously for various activities. Set repeating timers, customize notifications, and organize them with folders. It supports up to 24-hour intervals and offers a simple, intuitive interface.
Track time remaining until important events or time elapsed since a past event. Receive notifications when a countdown expires. This app offers a simple, ad-free experience for managing your time.
This advanced speedcubing utility app offers an official WCA scrambler for legal solves, including complex 4x4 and blind scrambles. It features refined session support with multiphase and competition simulation modes, alongside detailed performance graphs and integrated tools like an average calculator.
This utility app offers a straightforward stopwatch experience with a large, easy-to-read display and simple two-button operation. It's designed for users who need a no-fuss timer for quick and accurate timekeeping.
This utility app offers a secondary timer for your Apple devices, including iPhone, iPad, and Apple Watch. It supports Siri Shortcuts for quick activation and allows watch complications to start specific timers with a single tap.