# 20/20 Straight Line Equations — The tutor in your pocket. > Educational tool for mastering straight line equations and slopes. (iPhone/iPad app by Walter Kissach.) - Source: https://appshunter.io/ios/app/2020-straight-line-equations/id317979165 (this page in markdown: same URL + `.md`) - Developer: [Walter Kissach](https://appshunter.io/developer/293232788) - Category: Education, Reference - Price: $0.99 - Rating: 2.00/5 from 3 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 18.0 · 157 MB - Languages: English - Released: 2009-06-06 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/2020-straight-line-equations/id317979165/reviews.md ## What is 20/20 Straight Line Equations? A power learning aid combining Practice, Coaching Calculators, Coaching Videos and Guide to help students master finding slopes and equations of straight lines. Coaching Calculators : - finding slope given two points - finding equation given a point and slope - finding equation given two points - finding equation given point and parallel line - finding equation given point and perpendicular line Choice of point-slope and slope-intercept methods when finding equations. It's ideal for students as the design reinforces each problem solving step. Examples highlight and simplify algebra that students find hard. ## Key features - Practice problems - Coaching calculators - Coaching videos - Step-by-step guidance - Slope and equation finding - Point-slope and slope-intercept methods ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/2020-straight-line-equations/id317979165/reviews.md ### 1/5 — Not What I Expected *2018-02-18* It wasn’t an easy app to use. It had too many sections of subsections guides to follow, which were not clear to understand. Actually, it made algebra more difficult for me to understand. The creators must make this more user friendly for those who are trying to makes sense of algebra equations. ## Frequently asked questions about 20/20 Straight Line Equations ### What math concepts does 20/20 Straight Line Equations cover? 20/20 Straight Line Equations focuses on helping students master finding slopes and equations of straight lines. It covers various methods for finding equations, including given two points, a point and slope, or parallel/perpendicular lines. ### How does 20/20 Straight Line Equations help students learn? The app acts as a tutor by combining practice problems, coaching calculators, instructional videos, and guides. Its design reinforces each problem-solving step, making complex algebra more accessible. ### What devices is 20/20 Straight Line Equations available on? 20/20 Straight Line Equations is available on iPhone and iPad devices. ### What is the price of 20/20 Straight Line Equations? 20/20 Straight Line Equations is a paid app, costing $0.99. ### Does 20/20 Straight Line Equations have ads? No, 20/20 Straight Line Equations is ad-free. ### How often is 20/20 Straight Line Equations updated? The app was last updated on September 16, 2025, with version 7.7. ### What is the age rating for 20/20 Straight Line Equations? 20/20 Straight Line Equations has an age rating of 4+. ### What are the user reviews like for 20/20 Straight Line Equations? Based on 3 ratings, 20/20 Straight Line Equations has an average rating of 2.0 stars. ## Version history (last 5 releases) ### 7.7 — 2025-09-16 This version is iOS 18 compatible and contains minor bug fixes. ### 7.6 — 2024-04-09 This version contains minor bug fixes. ### 7.5 — 2024-03-28 iOS 17 compatibility and minor bug fixes. ### 7.4 — 2022-12-11 This version has minor bug fixes. ### 7.3 — 2022-09-02 This version contains minor bug fixes and enhancements. ## Apps similar to 20/20 Straight Line Equations | App | Rating | Price | Category | | --- | --- | --- | --- | | [Graphs and Slopes](https://appshunter.io/ios/app/graphs-and-slopes/id1555122436) | — | $2.99 | Education | | [Ask ManyTutors](https://appshunter.io/ios/app/ask-manytutors/id1137579082) | — | Free | Education | | [GD & T Guide](https://appshunter.io/ios/app/gd-and-t-guide/id1374135977) | 3.0 (9) | Free | Education | | [Scientific Calculator With Normal/Gaussian Distribution](https://appshunter.io/ios/app/scientific-calculator-with-normalgaussian-distribution/id731342063) | 2.3 (3) | Free | Education | | [North Bend School District](https://appshunter.io/ios/app/north-bend-school-district/id1559959952) | 5.0 (2) | Free | Education | | [Least Common Denominator](https://appshunter.io/ios/app/least-common-denominator/id844792224) | 4.3 (4) | $0.99 | Education | ## More apps by Walter Kissach - [Quadratic Inequalities](https://appshunter.io/ios/app/quadratic-inequalities/id293232785) - [Circles and Equations](https://appshunter.io/ios/app/circles-and-equations/id293619582) - [Even and Odd Polynomials](https://appshunter.io/ios/app/even-and-odd-polynomials/id293668394) - [Quadratic Factoring](https://appshunter.io/ios/app/quadratic-factoring/id294040055) - [Quadratic Equations](https://appshunter.io/ios/app/quadratic-equations/id294195555) - [20/20 Fraction Basics](https://appshunter.io/ios/app/2020-fraction-basics/id298766849) All apps by Walter Kissach: https://appshunter.io/developer/293232788 --- *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 2026-06-10.*