# Graphs and Slopes vs Electric Prep Pro

The clearest difference is in-app purchases: Graphs and Slopes at none against Electric Prep Pro's 1. Graphs and Slopes also leads on price ($2.99 vs $9.99) and iOS requirement (14.0 vs 17.0). Electric Prep Pro's advantage is update cadence (every 3 weeks vs every 11 months). On ads and device support there is nothing between them.

Graphs and Slopes costs $2.99 and Electric Prep Pro $9.99 up front. Electric Prep Pro sells 1 one-off in-app purchase. Graphs and Slopes asks for nothing beyond the download.

Graphs and Slopes ships an update every 11 months, Electric Prep Pro every 3 weeks. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Graphs and Slopes | Electric Prep Pro |
| --- | --- | --- |
| Price | **$2.99** | $9.99 |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/electric-prep-pro/id6502861916/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 weeks** |
| Monetization | — | Paid |
| Size | 3 MB | 16 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Gomathy Shankaran](https://appshunter.io/developer/503956143) | [Rick Twilling](https://appshunter.io/developer/1790344644) |

## What reviewers say

### Graphs and Slopes

[App page](https://appshunter.io/ios/app/graphs-and-slopes/id1555122436)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Electric Prep Pro

[App page](https://appshunter.io/ios/app/electric-prep-pro/id6502861916)

This app offers comprehensive study materials for aspiring electricians, including customizable practice exams, NEC articles, calculation tools, and expert video tutorials. It aims to enhance knowledge and skills for career advancement in the electrical industry.

**Highlights:** Customizable practice exams, NEC articles and calculation tools, Expert video tutorials, Personalized learning paths, User-friendly interface, Career advancement resources

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlimited | $1.99 | one-time |


## Frequently asked questions

### Is Graphs and Slopes free?

Graphs and Slopes costs $2.99, with no in-app purchases.

### Is Electric Prep Pro free?

Electric Prep Pro costs $9.99, and also offers in-app purchases.

### Do Graphs and Slopes or Electric Prep Pro have ads?

Neither Graphs and Slopes nor Electric Prep Pro shows ads.

### Which is updated more often, Graphs and Slopes or Electric Prep Pro?

Graphs and Slopes ships an update every 11 months, and Electric Prep Pro every 3 weeks. Most recently, Graphs and Slopes was updated on October 16, 2026 and Electric Prep Pro on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*