248+ iOS apps curated and reviewed
Looking for free sizing apps? 18 of our 248+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (1) | No | No | May 2026 |
| 2 |  | Free | 5.0★ (1) | No | No | Aug 2026 |
| 3 |  | Free | 4.2★ (2.4K) | Yes | Yes | Aug 2026 |
| 4 |  | Free | — | No | No | May 2026 |
| 5 |  | Free | — | No | No | May 2026 |
| 6 |  | Free | — | No | No | May 2026 |
| 7 |  | Free | 5.0★ (1) | No | No | Jul 2026 |
| 8 |  | $3.99 | 4.7★ (317) | No | No | Aug 2026 |
This program assists with sizing expansion tanks for hydronic, thermal, and water systems. It provides detailed output including required tank volume and relevant Zilmet data sheets, brochures, and installation manuals for residential and commercial applications.
This app helps you find the perfect clothing size by visually comparing your existing garments with new items. Avoid returns and shop with confidence by using its patented algorithm to virtually try on clothes before you buy.
This application helps you accurately measure ring and finger sizes without the need for physical tools. It offers a user-friendly interface and supports various measurement systems for precise results, making online jewelry shopping easier.
Scan your hand using your device's camera to accurately determine your ideal glove size. This utility app simplifies the process of finding the perfect fit for any glove, ensuring comfort and optimal performance.
Instantly calculate HVAC duct sizes based on airflow, friction rate, or velocity. This tool provides accurate duct dimensions in seconds without needing charts, supporting various duct types and units.
This app simplifies calculating the required size of Gastite® CSST for gas installations. Input gas type, CSST length, and appliance power to instantly determine the correct size. It offers easy navigation, user-friendly design, and access to FAQs and installation guides.
This utility app helps installers determine the correct size of flexible gas piping for their projects. It calculates the appropriate pipe size based on gas type, tubing length, supply pressure, and flow capacity. Users can also access installation guides and product information.
This app helps users quickly calculate fluid flow rates or valve Cv values. It also features an actuator sizing tool using Numasizing® technology and includes helpful conversion calculators. Additionally, users can find their nearest authorized distributor.
Utilize 3D scanning technology to accurately measure your feet for optimal athletic performance. Get precise sizing recommendations for sports equipment.
Accurately measure ring sizes using your phone's screen. Determine diameter, circumference, and convert between international sizing systems. Ideal for jewelers and shoppers needing precise measurements.