# Math Expert Pro vs Displacement Reaction

The clearest difference is update cadence: Math Expert Pro at every 3 months against Displacement Reaction's every 33 months. Displacement Reaction's advantage is price ($1.99 vs $2.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Math Expert Pro costs $2.99 and Displacement Reaction $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Math Expert Pro ships an update every 3 months, Displacement Reaction every 33 months. The most recent releases landed on October 21, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Math Expert Pro | Displacement Reaction |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 33 months |
| Monetization | Paid | — |
| Size | 10 MB | 150 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Markus Ide](https://appshunter.io/developer/625191124) | [VIRTUAL FILAMENTS PRIVATE LIMITED](https://appshunter.io/developer/1474217212) |

## What reviewers say

### Math Expert Pro

[App page](https://appshunter.io/ios/app/math-expert-pro/id625198358)

This app provides a comprehensive collection of math and physics formulas. It features a unique calculator that determines possible calculations based on the information you input.

**Highlights:** Extensive math and physics formula library, Interactive formula calculator, Input-driven calculation suggestions, Supports iPhone, iPad, and iPod, Offline formula access

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

**In-app purchases:** none


### Displacement Reaction

[App page](https://appshunter.io/ios/app/displacement-reaction/id1544602964)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Math Expert Pro free?

Math Expert Pro costs $2.99, with no in-app purchases.

### Is Displacement Reaction free?

Displacement Reaction costs $1.99, with no in-app purchases.

### Do Math Expert Pro or Displacement Reaction have ads?

Neither Math Expert Pro nor Displacement Reaction shows ads.

### Which is updated more often, Math Expert Pro or Displacement Reaction?

Math Expert Pro ships an update every 3 months, and Displacement Reaction every 33 months. Most recently, Math Expert Pro was updated on October 21, 2026 and Displacement Reaction on October 27, 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.*