189+ iOS apps curated and reviewed
Out of 189+ capacity calculation apps on iOS, 14 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.0★ (1) | No | No | May 2026 |
| 2 |  | Free | 5.0★ (1) | No | No | May 2026 |
| 3 |  | Free | — | No | Yes | Jun 2026 |
| 4 |  | Free | 4.8★ (21K) | Yes | No | Jul 2026 |
| 5 |  | Free | 5.0★ (1) | Yes | No | May 2026 |
| 6 |  | Free | 4.6★ (1.5K) | No | No | Jul 2026 |
| 7 |  | Free was $3.99 | 1.3★ (6) | No | No | Jul 2026 |
| 8 |  | $2.99 | — | No | No | May 2026 |
Easily determine the maximum number of data cables that can fit within a conduit of a specific size. Input your conduit dimensions and desired fill ratio to get an instant calculation.
This tool assists broadcasters in determining optimal modulation parameters for ATSC 3.0 channels. It displays full channel capacity and RF performance for various configurations, ensuring compliance with industry standards.
This app provides 15 calculators for estimating concrete, blocks, mortar, rebar, and gravel. It supports various shapes and units, offering material cost estimations for construction projects.
This tool helps you plan major expenses by simulating loan payments and calculating your borrowing capacity. Save and compare different financing options to make informed decisions for your projects.
Calculate the appropriate wire size for electrical circuits. This tool helps determine wire size based on voltage drop and current carrying capacity, ensuring compliance with NEC ampacity limits.
Estimate the total and filled volumes of various tank shapes, including rectangular, cylindrical, and those with conical or spherical bottoms. Calculates liquid volume and weight based on filling level, providing an estimate for oil and water tanks.
Calculate belt conveyor cross sections and capacities using industry standards. Supports various roller arrangements and both metric and US units for comprehensive engineering needs.
Calculate estimated battery run time based on capacity and device consumption. Determine battery capacity from stored energy and voltage, and calculate required battery ratings based on load and duration.
This app calculates your vehicle's realistic towing capacity, ensuring safe and compliant trailer matching. It adheres to industry standards and allows for custom weight inputs for accurate results.
Access capacity charts for hundreds of rigging items and calculate load formulas with ease. Browse a vast database of crane models and use mat calculators to simplify crane matting. Eliminate the need for physical manuals and reference materials.
This app helps builders and site owners calculate material volume, weight, and cost for projects. It generates shopping lists, tracks expenses, and identifies overspending. Supports various materials like wood and metal, with options for multiple project lists.
This tool helps calculate sprinkler system flow and zone capacity. It guides nozzle selection and determines the number of sprinkler heads per zone to maximize available flow. Built-in charts and configurable zone capacity simplify system planning.
Easily calculate the filled and half-filled volumes of various tank types. This app offers a comprehensive volume converter for numerous units and supports 15 different tank shapes for accurate estimations.
This app helps towing and recovery operators calculate resistance and load forces. It assists with calculations for surface and gradient resistance, and includes features for anchorability, weight transfer, and fleet truck management with its in-app purchase.
Calculate custom off-grid solar home power systems. Determine the exact number of solar panels and battery capacity needed for your energy usage. Helps plan system size, inverter requirements, and battery bank specifications.
This app assists in selecting the appropriate elevator car size and capacity based on the EN 81/20 standard. It provides a straightforward way to determine elevator specifications for compliance.
This app helps you accurately calculate power outage durations and battery performance. It factors in real-world conditions like battery discharge, inverter efficiency, and device consumption to provide realistic estimates for runtime and charging.