# Folded BY vs Slopes

The clearest difference is update cadence: Folded BY at every 3 weeks against Slopes's every 2 months. Folded BY also leads on iOS requirement (7.1 vs 15.0). Slopes's advantage is ratings volume (41 vs 3). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Folded BY against 4.9 for Slopes. That said, the two scores are not equally well evidenced: Slopes has 41 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Folded BY ships an update every 3 weeks, Slopes every 2 months. The most recent releases landed on June 11, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Folded BY | Slopes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/folded-by-u/id956868075/reviews)** | [4.9 (41 ratings)](https://appshunter.io/ios/app/slopes-differential-equations/id1136920301/reviews) |
| Number of ratings | 3 | **41** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 167 MB | 21 MB |
| Requires iOS | **7.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brigham Young University](https://appshunter.io/developer/445934469) | [Tim Lucas](https://appshunter.io/developer/1136916670) |

## What reviewers say

### Folded BY

[App page](https://appshunter.io/ios/app/folded-by-u/id956868075)

Explore origami through video tutorials that teach you how to create figures and understand the underlying mathematical principles. This app is designed to help K-12 students develop abstract thinking, problem-solving skills, and an interest in engineering.

**Highlights:** Origami figure tutorials, Origami math principles, Abstract thinking development, Problem-solving confidence, Engineering concepts, Video guidance

**Features:** macOS Compatibility

**In-app purchases:** none


### Slopes

[App page](https://appshunter.io/ios/app/slopes-differential-equations/id1136920301)

Explore graphical solutions to ordinary differential equations with this interactive educational tool. It offers six distinct activities, including plotting vector fields, solving systems of equations, and visualizing oscillations. Ideal for homework, classroom use, or research projects.

**Highlights:** Interactive ODE exploration, Vector field plotting, Systems of equations solver, Numerical approximation methods, Bifurcation diagram creation, Preloaded and custom examples

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Folded BY free?

Folded BY is free to download, with no in-app purchases.

### Is Slopes free?

Slopes is free to download, with no in-app purchases.

### Which has better reviews, Folded BY or Slopes?

Folded BY is rated higher. Folded BY averages 5.0 out of 5 from 3 ratings, while Slopes averages 4.9 from 41 ratings.

### Do Folded BY or Slopes have ads?

Neither Folded BY nor Slopes shows ads.

### Which is updated more often, Folded BY or Slopes?

Folded BY ships an update every 3 weeks, and Slopes every 2 months. Most recently, Folded BY was updated on June 11, 2026 and Slopes on June 1, 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.*