# PP+ Image Formation vs Light Lab

The clearest difference is price: Light Lab at Free against PP+ Image Formation's $1.99. Light Lab also leads on iOS requirement (16.6 vs 18.0). PP+ Image Formation's advantage is in-app purchases (none vs 2). On update cadence, ads and device support there is nothing between them.

Light Lab is free to download; PP+ Image Formation costs $1.99 up front. Light Lab sells 2 one-off in-app purchases. PP+ Image Formation asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 30, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | PP+ Image Formation | Light Lab |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Size | 91 MB | 8 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Polyhedron Learning Media, Inc.](https://appshunter.io/developer/458882328) | [THSS](https://appshunter.io/developer/1722239755) |

## 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


### Light Lab

[App page](https://appshunter.io/ios/app/light-lab-learn-optics/id6504238420)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase all lenses | $4.99 | one-time |
| Lens Ticket Issuance Function | $9.99 | one-time |


## Frequently asked questions

### Is PP+ Image Formation free?

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

### Is Light Lab free?

Light Lab is free to download, with in-app purchases available.

### Do PP+ Image Formation or Light Lab have ads?

Neither PP+ Image Formation nor Light Lab shows ads.

### Which is updated more often, PP+ Image Formation or Light Lab?

PP+ Image Formation ships an update every 3 months, and Light Lab every 3 months. Most recently, PP+ Image Formation was updated on September 30, 2026 and Light Lab on October 2, 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.*