This app helps you quickly solve for an unknown value in a proportion. Simply input three known numbers, and it will calculate the fourth, making ratio and proportion calculations effortless.



207+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our aspect ratio pro list covers 207+ iPhone apps updated through July 2026. Compare ratings, prices, and screenshots in one place.



This app helps you quickly solve for an unknown value in a proportion. Simply input three known numbers, and it will calculate the fourth, making ratio and proportion calculations effortless.






Easily resize and crop your photos with custom aspect ratios on your iPhone or iPad. Select multiple images for quick batch editing, or add color margins to fill empty spaces. Ideal for social media, printing, and creative projects.


Easily calculate any ratio for design projects. Input a base ratio and either width or height to automatically determine the other dimension. Offers dark and light themes for usability in any lighting.


Easily crop and resize videos to fit any platform or social media requirement. Choose from popular aspect ratios or customize freely for perfect framing. Export your edited videos in high quality.


Easily calculate aspect ratios for images and videos. Supports input formats like width x height or x:y ratios. A simple tool for content creators and designers.


This utility calculates unknown values in aspect ratios, useful for resizing images and clipping. It simplifies the process of determining proportional dimensions for various visual applications.


This Safari extension corrects distorted videos on websites by allowing you to select a valid aspect ratio. It ensures videos automatically fit the screen and are viewable in both portrait and landscape modes.


This app provides advanced video recording capabilities for mobile devices, offering professional-level control over video, audio, and color settings. It supports high-end codecs, manual adjustments, and external accessories, transforming your device into a production-ready camera for creators of all levels.


This app transforms your mobile device into a professional cinema camera, offering advanced controls for video capture. It provides filmmakers, content creators, and educators with intuitive tools to achieve high-quality video results.


This app offers professional cinema camera features for mobile devices, enabling advanced video recording and monitoring. It includes features like Wi-Fi video transmission, multiple recording modes, and sophisticated color grading tools.


This app offers professional-grade photo and video capture with extensive manual controls and advanced editing tools. It leverages computational photography to unlock your device's camera potential, supporting RAW formats and high-resolution video recording.


Easily create engaging videos from your favorite shots with automatic editing and a range of premium tools. Backed up to the cloud, your footage is accessible and editable anywhere, anytime.


Take professional-quality videos with advanced manual controls for exposure, focus, and color. Seamlessly connect multiple devices for multicam recording and sync directly with editing software.






Create professional-quality cinemagraphs, a unique blend of still images and subtle motion, with this powerful mobile editing tool. Easily capture or import footage, use magical live masking, and refine your creations with advanced editing options for stunning visual storytelling.


This app offers advanced manual controls for photography and videography, allowing users to capture professional-quality images and footage. It includes a powerful editing suite and detailed metadata viewing, with options for custom sharing and privacy.


This app offers advanced manual controls for photography and videography, including exposure, focus, and white balance. It supports RAW image capture, high frame rates, and various shooting modes like burst and time-lapse. An integrated editor allows for non-destructive adjustments and creative effects.


This app transforms your smartphone into a professional DSLR camera, offering manual controls, AI-powered features, and instant color grading for stunning photos and cinematic videos. It includes advanced editing tools, creative effects like motion blur and bokeh, and AI-driven headshot creation.


Easily resize videos to fit any aspect ratio without cropping. Customize backgrounds with colors or blur, add animated text and emojis, and adjust sound. Create square videos for social media platforms like Instagram, Twitter, and Facebook.