# PP+ Image Formation vs Gregor Mendel

The clearest difference is update cadence: PP+ Image Formation at every 3 months against Gregor Mendel's every 9 months. Gregor Mendel's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 18.0). On price, ads and in-app purchases there is nothing between them.

PP+ Image Formation costs $1.99 and Gregor Mendel $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PP+ Image Formation ships an update every 3 months, Gregor Mendel every 9 months. The most recent releases landed on October 26, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | PP+ Image Formation | Gregor Mendel |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Size | 91 MB | 36 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPad | **iPad, Mac, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Polyhedron Learning Media, Inc.](https://appshunter.io/developer/458882328) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## What reviewers say

### PP+ Image Formation

[App page](https://appshunter.io/ios/app/pp-plus-image-formation-lenses/id599292005)

**Features:** macOS Compatibility

**In-app purchases:** none


### Gregor Mendel

[App page](https://appshunter.io/ios/app/gregor-mendel/id1457990360)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PP+ Image Formation free?

PP+ Image Formation costs $1.99, with no in-app purchases.

### Is Gregor Mendel free?

Gregor Mendel costs $1.99, with no in-app purchases.

### Do PP+ Image Formation or Gregor Mendel have ads?

Neither PP+ Image Formation nor Gregor Mendel shows ads.

### Which is updated more often, PP+ Image Formation or Gregor Mendel?

PP+ Image Formation ships an update every 3 months, and Gregor Mendel every 9 months. Most recently, PP+ Image Formation was updated on October 26, 2026 and Gregor Mendel on September 20, 2026.

---

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