Comparison

Circular Segment Calculator vs Numerical Solver

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Circular Segment Calculator

Instantly calculate all six properties of any circular segment by entering just two values. Ideal for students, engineers, and makers needing quick, reliable geometry solutions on the go.

Highlights
  • Calculate radius, angle, arc length, chord length, height, and area
  • Two input modes: Angle & Radius or Chord & Height
  • Real-time results update as you type
  • Step-by-step formula explanations
  • Tap to copy results
  • Supports multiple units and dark mode
Features
Read full description

Circular Segment Calculator is the fastest way to solve any circular segment - enter just two values and instantly get all six properties: radius, central angle, arc length, chord length, segment height, and area. Whether you're a student, engineer, architect, woodworker, or CNC machinist, this calculator handles the geometry so you don't have to. TWO FLEXIBLE INPUT MODES Angle & Radius - Know the circle's radius and the central angle? Every other property is solved instantly. Chord & Height - Working from a physical measurement? Enter the chord length and segment height (sagitta) to back-calculate the radius, angle, and everything else. WHAT YOU GET Arc length - exact curved distance along the segment Chord length - straight-line distance between the two endpoints Segment height - the sagitta, from chord midpoint to arc Central angle - in degrees or radians, your choice Radius - recovered from any two known values Segment area - precise enclosed area calculation BUILT FOR REAL WORK • Real-time results — calculations update as you type, no submit button needed • Step-by-step explanations — every formula shown with your actual numbers • Tap to copy — tap any result row to copy the value instantly to clipboard • Unit flexibility — switch between cm, m, inches, and feet; degrees or radians • Visual diagram — live canvas updates as you enter values, labeled with r, θ, c, h, and L • Reference sheet — full formula reference with annotated diagram, always one tap away • Dark Mode — full system dark and light mode support WHO USES THIS Students working through geometry, trigonometry, or engineering coursework Engineers & architects calculating curved structural elements, arches, and vaults Woodworkers & makers laying out curved cuts, jigs, and templates CNC & CAM operators computing toolpaths for circular profiles Surveyors working with circular curves and road alignment Anyone who needs quick, reliable circular segment math on the go Circular segment - is an area of a circle which is "cut off" from the rest of the circle by a secant (chord). A circular sector or circle sector, is the portion of a disk enclosed by two radii and an arc, where the smaller area is known as the minor sector and the larger being the major sector. In the diagram, θ is the central angle in radians, r the radius of the circle, and L is the arc length of the minor sector. A sector with the central angle of 180° is called a half-disk and is bounded by a diameter and a semicircle. Sectors with other central angles are sometimes given special names, these include quadrants (90°), sextants (60°) and octants (45°), which come from the sector being one 4th or 6th or 8th part of a full circle, respectively. The angle formed by connecting the endpoints of the arc to any point on the circumference that is not in the sector is equal to half the central angle. PRIVACY No account required. No ads. No tracking. All calculations run entirely on your device. Download Circular Segment Calculator and solve segment geometry in seconds. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

About

Numerical Solver

Features
Read full description

Numerical Solver is a mobile-first numerical mathematics tool for solving equations, differential equations, and analyzing mathematical functions. Solve equations numerically Solve algebraic equations with one or more variables, including nonlinear equations and systems of equations. • Solve equations numerically • Solve nonlinear equations and systems • Find real and complex solutions • Evaluate solutions at specific values • Solve equations with a single variable for free, with no limits Solve ordinary differential equations Numerical Solver supports linear and nonlinear ordinary differential equations, including initial value problems (IVPs), boundary value problems (BVPs), and systems of ODEs with multiple dependent variables. • Solve initial value problems • Solve boundary value problems • Solve linear and nonlinear ODEs • Solve systems of ODEs • Compute the solution at a given value of x • Plot numerical solutions Visualize ODE systems For systems of ODEs, choose which variables to plot against each other and explore relationships and trajectories within the system. For example, you can solve the Lorenz system and visualize its characteristic trajectories through different combinations of variables. Differentiate equations Differentiate equations with respect to x or y and evaluate the derivative at specific values. • Differentiate equations with respect to x or y • Evaluate derivatives at given x and y values • Work with multivariable expressions Plot functions and data Plot mathematical functions or visualize a list of x,y data points. • Plot functions • Plot lists of data • Explore numerical results visually Numerical computing on the go Numerical Solver is designed to give you practical numerical tools wherever you are, without requiring an internet connection. Use it for mathematics, engineering, science, education, or whenever you need to solve and visualize numerical problems. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Circular Segment Calculator4 screens
Numerical Solver4 screens

Verdict

The call

The clearest difference is price: Numerical Solver at Free against Circular Segment Calculator's $2.99. Numerical Solver also leads on update cadence (monthly vs every 23 months). Circular Segment Calculator's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Numerical Solver is free to download; Circular Segment Calculator costs $2.99 up front. Numerical Solver sells 3 in-app purchases, starting at $2.99 per year. Circular Segment Calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Circular Segment Calculator ships an update every 23 months, Numerical Solver monthly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
Circular Segment Calculator versus Numerical Solver: the parameters behind the verdict, then further details
ParameterCircular Segment CalculatorNumerical Solver
Price$2.99Free — better
Rating5.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 23 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.6
Further details — not scored
Size1 MB3 MB
Age rating4+4+
DeveloperHeng Jia Liangi-SmartSolutions

In-app purchases

None

Circular Segment Calculator

No in-app purchases

3 purchases

Numerical Solver

Subscriptions3
  • Create Charts$2.991 Year
  • Calculate Integrals$2.991 Year
  • Solve system of algebraic eqns3 Days trial$4.991 Year

Questions

Is Circular Segment Calculator free?
Circular Segment Calculator costs $2.99, with no in-app purchases.
Is Numerical Solver free?
Numerical Solver is free to download, with in-app purchases available.
Do Circular Segment Calculator or Numerical Solver have ads?
Neither Circular Segment Calculator nor Numerical Solver shows ads.
Which is updated more often, Circular Segment Calculator or Numerical Solver?
Circular Segment Calculator ships an update every 23 months, and Numerical Solver monthly. Most recently, Circular Segment Calculator was updated on November 3, 2026 and Numerical Solver on October 30, 2026.

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