# Dynamic Geometry Sketch Pad

> Dynamic geometry and mathematical computation tool for creating, measuring, and transforming geometric figures. (iPhone/iPad app by 辉 马.)

- Source: https://appshunter.io/ios/app/dynamic-geometry-sketch-pad/id964956312 (this page in markdown: same URL + `.md`)
- Developer: [辉 马](https://appshunter.io/developer/959342857)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Rating: 2.40/5 from 14 App Store ratings · 38 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 13 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2015-02-18
- Data updated: 2026-08-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/dynamic-geometry-sketch-pad/id964956312/reviews.md

## What is Dynamic Geometry Sketch Pad?

Sketchpad is a set of mathematics dynamic geometry, mathematical computation, formulas input application.

Using mathematical drawing board, you can replace the Ruler mapping, but you can make advanced image and function of the image trajectory, can dynamically change their properties, measure their relative value, you can create custom variables, custom functions, using natural mathematical formula input expression, beautiful, clear, inside it is built up to 25 common mathematical functions. All visual elements are displayed in a scrollable Sketchpad infinite area, Sketchpad area content can be permanently saved as a separate file.

This program includes the following features:

Formula features:
      - Sketchpad provides fractional, radical, radical times, index, subscript, A superscripts arranged formula, C and superscripts combination formula, Σ summation formula, Π quadrature formula also provides Greece enter letters, overline formula (expressed segments), the arc formula (expressed arc) and other mathematical formula, the formula can be pre-cut, copy, paste, natural way to enter, the natural way to edit, and consistent operation iOS text edit.

File feature
      - New:Locked
      - Open:Locked
      - Save:Locked
      - Setting

Editing feature
      - Undo
      - Redo
      - Delete
      - Select All
      - Select parents
      - Select children
View feature
      - Point type
      - Line type
      - Color
      - Hide
      - Show all
      - Unselectable
      - All selectable
      - Hide label
      - Show label
      - Label
Constructure feature
        - Point on objec
        - Midpoint
        - points of intersection
        - Line segment
        - Half-line
        - Line
        - Parallel line
        - Perpendicular line
        - Angular bisector
        - Circle
        - Circle of center and radius
        - Arc on circle
        - Arc of three point
        - Locus
Transform feature
        - Mark center
        - Mark mirror
        - Mark angle
        - Mark ratio
        - Mark vector
        - Mark distance
        - Translation
        - Scale
        - Rotation
        - Mirror
Measure feature
        - Length
        - Distance
        - Circumference
        - Arc length
        - Radius
        - Squard
        - Angle
        - Radian angle
        - Ratio: the ratio of AB measure of three ABC / AC, unit 1.
        - Horizontal ordinate
        - Vertical ordinate
        - Distance of coordinate
Data feature
        - New Variable: create mathematical variable object, you can enter complex mathematical formulas, execution, subtraction, multiplication, fractions, exponentiation, but you can use the built-in 25 kinds of mathematical functions (sin, cos, tan, arcsin, arccos, arctan, sinh, cosh , tanh, arcsinh, arccosh, arctanh, exp, pow, sqrt, ln, log, round, trunc, sng, abs, min, max, arrange, combine), you can use custom variables, custom functions and parameters for calculating cost per unit (currently only supports cm and angle in radians), to use the constant π, e participate in the calculation.
        - New Function: Create a mathematical function objects, custom functions, variables with other calculations.
Graphics feature
        - Define coordinate system
        - Define origin
        - Define unit length
        - Define origin and units length
        - Change graduation on axis
        - Mark coordinate system
        - Draw point
        - Drawing function:2 limit
        - Draw function curve:2 limit
        - Independent variable interval
Mapping Toolbox functions
        - Arrow selection tool
        - Scroll Tool
        - Point tool
        - Line Tool
        - Circle Tool
        - Label Tool

Auto-save feature: 
        -Each step, Sketchpad automatically saved when the program closes workspace content or crash, after the next open draw will automatically restore the previous analysis.

Two finger swipe means you can scroll sketchpad content at any time.

## Key features

- Dynamic geometric constructions
- Natural mathematical formula input
- 25 built-in mathematical functions
- Infinite scrollable drawing area
- Permanent file saving
- Undo/Redo editing
- Geometric transformations

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock All Functions & Remove Ads | $6.99 | one-time |


## Recent user reviews (10 of 38)

All indexed reviews: https://appshunter.io/ios/app/dynamic-geometry-sketch-pad/id964956312/reviews.md

### 5/5 — 好

*2023-07-15, version 1.8.2*

好

### 1/5 — Bought the Full Version

*2023-02-28*

Features haven‘t been unlocked

### 3/5 — 疯狂闪退

*2022-09-11, version 1.8.2*

功能很好用，但是稍微一操作就闪退，导致基本无法使用

### 2/5 — App crashea

*2021-12-11*

The app keeps on crashing.Kindly fix it

### 5/5 — 闪退是重点

*2021-01-31*

在闪退多次后直接打不开，重启手机也没用，还有向下平移的时候为啥不是直直的下来，而是有点偏像斜着下来，再就是画等长的线段要一点一点地挪有点痛苦。不过手机上能用几何画板本来就不错了，拜托程序猿速速解决

### 3/5 — An sich gute App aber mit Verbesserungspotential

*2020-11-26*

Die App hat gute Ansätze, jedoch ist die Umsetzung schlecht.

Verbesserungsvorschläge:
- Zommen duch 2 Fingertechnik
- App stürzt oftmals ab (IPad)
- Winkel bearbeiten
- Deutsche Übersetzung (sehr wichtig)
- Intuitivere Steuerung
- Übersichtlichere Widgets

### 5/5 — 很好的软件

*2020-10-01*

也有闪退的时候，希望能解决这个问题。其它都可以，不错的产品

### 4/5 — 闪退问题严重！！！！！！

*2020-03-19*

刚刚做完的图，一个闪退就没了！！这让人体验很差！四星是因为软件整体还不错，功能较为齐全。不过为什么要收费啊？
（如果闪退问题能解决那花点钱用这软件还是值的）

### 5/5 — 真的垃圾（五星只是想让更多人看到）

*2020-03-06*

随便用个什么东西就要收费，画个函数图像会瞬间蹦出来一大堆不知道是啥的东西

### 4/5 — 闪退问题

*2020-02-25*

你只要能解决闪退问题，我就花钱升级。这个软件很好，很流畅，就是总闪退，我差的不是那点钱，问题是闪退很严重，如果你说充钱就不闪退，那我就花钱买。给你4星，是对你的鼓励，希望您能解决闪退问题！

## Frequently asked questions about Dynamic Geometry Sketch Pad

### What is Dynamic Geometry Sketch Pad?

Dynamic Geometry Sketch Pad is a mathematics application for dynamic geometry and mathematical computation. It allows users to create geometric figures, input complex formulas, and perform measurements and transformations.

### What kind of mathematical formulas can be entered in Dynamic Geometry Sketch Pad?

The app supports a wide range of formulas including fractional, radical, summation, and combination formulas. It also allows for Greek letters and arc notations, with natural input and editing similar to iOS text editing.

### Can I save my work in Dynamic Geometry Sketch Pad?

Yes, all visual elements are displayed in an infinite scrollable area, and the content can be permanently saved as a separate file. However, the 'New', 'Open', and 'Save' file features are currently locked.

### What mathematical functions are available in Dynamic Geometry Sketch Pad?

The application includes 25 common mathematical functions such as trigonometric functions (sin, cos, tan), exponential functions (exp, pow), logarithmic functions (ln, log), and more. Users can also create custom variables and functions.

### What geometric constructions can be made with Dynamic Geometry Sketch Pad?

The app supports various constructions including points on objects, midpoints, intersections, line segments, half-lines, parallel and perpendicular lines, angular bisectors, circles, and arcs.

### Does Dynamic Geometry Sketch Pad have ads?

No, the application does not contain advertisements. It is a free application without any ad support.

### What devices is Dynamic Geometry Sketch Pad compatible with?

Dynamic Geometry Sketch Pad is available for iPhone, iPad, and iPod. It is designed for iOS devices.

### How often is Dynamic Geometry Sketch Pad updated?

The app was last updated on April 23, 2017, with version 1.8.2. This indicates a less frequent update cycle compared to more actively maintained applications.

## Version history (last 5 releases)

### 1.8.2 — 2017-04-23

This app has been updated by Apple to display the Apple Watch app icon.

Add ads
Fix some crash bugs

### 1.8.1 — 2017-02-25

To solve the problem of collapse delete

### 1.8 — 2016-12-13

Add Animation

### 1.6 — 2016-08-26

1 add polygon, polygon perimeter and area measurement
2 adjust the drag canvas operation mode
3 solve the problem of three point angle can not be rotated and constant rotation of 90 degrees
4 some of the breakdown of the settlement

### 1.5 — 2015-02-17

No release notes.

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## More apps by 辉 马

- [Sketch C ( Offline Compiler,Debug )](https://appshunter.io/ios/app/sketch-c-offline-compilerdebug/id978527183)
- [Sketch C++ (Offline Compiler, Debug)](https://appshunter.io/ios/app/sketch-c-plus-plus-offline-compiler-debug/id980231813)
- [Sketch Lua](https://appshunter.io/ios/app/sketch-lua/id980512291)
- [Formula Calc - Reimagined the Calculator](https://appshunter.io/ios/app/formula-calc-reimagined-the-calculator/id982833820)
- [iPyDE](https://appshunter.io/ios/app/ipyde/id984990674)

All apps by 辉 马: https://appshunter.io/developer/959342857

## Related topics

[dynamic geometry sketch pad](https://appshunter.io/ios/topics/dynamic-geometry-sketch-pad) · [geometry pad](https://appshunter.io/ios/topics/geometry-pad)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*