# Prisms vs BrainCalcu

The clearest difference is in-app purchases: BrainCalcu at none against Prisms's 1. BrainCalcu also leads on update cadence (daily vs every 17 months). Prisms's advantage is ads (none vs shown) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Prisms sells 1 one-off in-app purchase. BrainCalcu asks for nothing beyond the download.

Prisms ships an update every 17 months, BrainCalcu daily. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Prisms | BrainCalcu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (19 ratings)](https://appshunter.io/ios/app/prisms/id1537640188/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 17 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 158 MB | 5 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Dust Productions, LLC](https://appshunter.io/developer/1530436091) | [Ghassan Jaam](https://appshunter.io/developer/1071543938) |

## What reviewers say

### Prisms

[App page](https://appshunter.io/ios/app/prisms/id1537640188)

Engage in a 3D spatial puzzle adventure as a scientist's intern. Roll, attach shapes, and orient your cube to solve challenges involving gates, teleporters, and invisible floors. Explore numerous experiments, with optional content available for purchase.

**Highlights:** 3D spatial puzzle gameplay, Cube manipulation with shape attachment, Teleporter and invisible flooring mechanics, 20 free experiments, Optional 20 bonus experiments, Mastering 3 shapes: circle, square, triangle

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fund Dr. Cubit's Research | $4.99 | one-time |


### BrainCalcu

[App page](https://appshunter.io/ios/app/braincalcu/id6670341205)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Prisms free?

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

### Is BrainCalcu free?

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

### Do Prisms or BrainCalcu have ads?

BrainCalcu shows ads; Prisms does not.

### Which is updated more often, Prisms or BrainCalcu?

Prisms ships an update every 17 months, and BrainCalcu daily. Most recently, Prisms was updated on October 11, 2026 and BrainCalcu on October 10, 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.*