221+ iOS apps curated and reviewed
If you already know Ruler®, this is the deeper bench. 221+ cm scale apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.3★ (35K) | No | Yes | Aug 2026 |
| 2 |  | Free | 4.4★ (88K) | No | Yes | Aug 2026 |
| 3 |  | Free | 3.7★ (3) | No | Yes | May 2026 |
| 4 |  | Free | 4.6★ (25) | No | Yes | Jul 2026 |
| 5 |  | Free | — | No | No | May 2026 |
| 6 |  | Free | 5.0★ (4) | — | No | Jul 2026 |
| 7 |  | Free | 4.3★ (19) | Yes | Yes | Aug 2026 |
| 8 |  | Free | 4.9★ (23) | Yes | No | Aug 2026 |
This app provides a versatile toolkit for all your measurement needs. It includes a classic ruler, a tape measure, and a camera ruler for precise measurements. Easily switch between units and document your findings by adding measurements directly to photos.
Transform your device into a versatile digital toolkit for precise measurements. Create 2D and 3D floor plans, scan rooms, and measure distances with advanced AI and computer vision. Ideal for DIY projects, home renovations, and professional use.
Easily convert distances between any scales for projects like architecture and model building. Input your measurements and desired scale to instantly calculate scaled distances.
This app allows users to measure printed architectural and engineering drawings directly on their device. It supports both known and unknown scales, offering fixed and variable scale options for precise measurements. Users can also select secondary units for quick conversions.
Easily convert between any units and scales for scratch-building projects. Input an amount, unit, and scale to convert from, then select your desired units and scale for instant results. A second calculator helps determine the scale of an existing item.
Easily compare the heights of multiple people, including friends, family, and celebrities. Visualize differences with interactive charts in centimeters or feet. Perfect for fun social comparisons or personal curiosity.
Easily convert measurements between inches and centimeters with this straightforward utility. It offers a simple interface for quick and accurate conversions.
Transform your smartphone into an expanded display for your smart kitchen scale. Effortlessly convert between numerous weighing units like kg, oz, lb, and ml, and even convert weight to length for yarn measurement. Supports Siri Shortcuts for convenient control.
This app turns your device into a versatile ruler and tape measure using advanced AR technology. It offers precise measurements for objects, rooms, and complex shapes, along with unit conversion and a history log. Ideal for professionals and everyday users needing accurate measurements.
This app uses your phone's camera and AI to estimate the weight of objects. Simply take a picture to get instant weight readings in various units, perfect for cooking or mailing. It features smart object recognition and saves your measurement history.
This application connects to a compatible weigh-in scale to display weight readings remotely. It automatically detects nearby scales, allowing users to select and switch between them. The app supports both pounds and kilograms and includes a feature to zero the scale.
Transform your iPhone into a handy measuring tool. Accurately measure lengths in centimeters and inches, up to 1 meter, without needing a physical ruler.
This app displays various measurement scales for length, including meters and inches. It allows users to set magnification ratios and reduced scales for different applications. Users can calibrate the ruler and adjust PPI settings for accurate measurements.
Transform your iPhone into a digital scale using AI. Estimate the weight of objects by taking a photo or uploading an image, with results available in grams, pounds, or kilograms. Track your measurements and use the AI-powered algorithm for accurate estimations.
Estimate the weight of items using your phone's camera. Simply take a photo of an object on a flat surface to get instant weight estimations in grams, ounces, pounds, or kilograms. It's a convenient digital scale alternative for everyday needs like cooking, shipping, or school projects.
