# Prism Lab vs Pango Memory

The clearest difference is rating: Pango Memory at 4.4 against Prism Lab's 3.3. Pango Memory also leads on update cadence (every 3 months vs every 216 months) and iOS requirement (15.0 vs 17.0). Prism Lab's advantage is monetization model (free vs free with in-app purchases) and review sentiment (80% vs 71%). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Prism Lab sells 1 one-off in-app purchase and Pango Memory sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Pango Memory holds the better App Store score, 4.4 against 3.3. Both are backed by a comparable volume of ratings — 287 and 180 respectively. Written reviews complicate that: 80% of Prism Lab's written reviews are positive against 71% of Pango Memory's, so the app with the better star average is not the one people write more warmly about.

Prism Lab ships an update every 216 months, Pango Memory every 3 months. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Prism Lab | Pango Memory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (287 ratings)](https://appshunter.io/ios/app/prism-lab/id301875263/reviews) | **[4.4 (180 ratings)](https://appshunter.io/ios/app/pango-memory-find-and-match/id1473277949/reviews)** |
| Number of ratings | **287** | 180 |
| Positive reviews | **80.0% of reviews** | 71.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 216 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 203 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KZ Labs](https://appshunter.io/developer/1091008972) | [Studio Pango](https://appshunter.io/developer/738679705) |

## What reviewers say

### Prism Lab

[App page](https://appshunter.io/ios/app/prism-lab/id301875263)

This application simulates lasers passing through prisms, demonstrating light refraction and reflection using Snell's Law. Users can adjust light sources, materials, and prism shapes to observe how light's trajectory changes between environments. It's a practical tool for understanding optical principles.

**Highlights:** Laser refraction simulation, Snell's Law implementation, Adjustable light source, Variable prism shapes, Different material options, Angle calculation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $2.99 | one-time |


### Pango Memory

[App page](https://appshunter.io/ios/app/pango-memory-find-and-match/id1473277949)

This memory game challenges young children to find and match pairs of ghosts hidden within a mysterious mansion. It's designed to develop memory, logic, and problem-solving skills in a fun, ad-free environment.

**Highlights:** Search and match ghost pairs, Explore 11 mysterious rooms, Develop memory and logic, Find hidden friends, Ad-free and safe for kids, Parental controls

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Treasure | $1.99 | one-time |
| Attic | $1.99 | one-time |
| Playroom | $1.99 | one-time |
| Kitchen | $1.99 | one-time |
| Library | $1.99 | one-time |
| Living Room | $1.99 | one-time |
| Dining Room | $1.99 | one-time |
| Bedroom | $1.99 | one-time |
| Bathroom | $1.99 | one-time |
| Full version | $9.99 | one-time |


## Frequently asked questions

### Is Prism Lab free?

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

### Is Pango Memory free?

Pango Memory is free to download, with in-app purchases available.

### Which has better reviews, Prism Lab or Pango Memory?

Pango Memory is rated higher. Prism Lab averages 3.3 out of 5 from 287 ratings, while Pango Memory averages 4.4 from 180 ratings.

### Do Prism Lab or Pango Memory have ads?

Neither Prism Lab nor Pango Memory shows ads.

### Which is updated more often, Prism Lab or Pango Memory?

Prism Lab ships an update every 216 months, and Pango Memory every 3 months. Most recently, Prism Lab was updated on October 31, 2026 and Pango Memory on November 6, 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.*