# Physics Formulas vs Diagram Explainer

The clearest difference is ads: Physics Formulas at none against Diagram Explainer's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Physics Formulas sells 2 in-app purchases, starting at $3.99 per 7 days and Diagram Explainer sells 4 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Physics Formulas ships an update every 2 months, Diagram Explainer every 3 months. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Physics Formulas | Diagram Explainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 38 MB | 99 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Mobin Akhter](https://appshunter.io/developer/1812505286) | [EclixTech UK LTD](https://appshunter.io/developer/1824450302) |

## What reviewers say

### Physics Formulas

[App page](https://appshunter.io/ios/app/physics-formulas-physref/id6757826240)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $3.99 | per 7 days |
| Lifetime Access | $49.99 | one-time |


### Diagram Explainer

[App page](https://appshunter.io/ios/app/diagram-explainer-ai-helper/id6761840834)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $6.99 | per month |
| Monthly Subscription | $7.99 | per month |
| Yearly Subscription | $29.99 | per year |
| Yearly Subscription | $44.99 | per year |


## Frequently asked questions

### Is Physics Formulas free?

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

### Is Diagram Explainer free?

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

### Do Physics Formulas or Diagram Explainer have ads?

Diagram Explainer shows ads; Physics Formulas does not.

### Which is updated more often, Physics Formulas or Diagram Explainer?

Physics Formulas ships an update every 2 months, and Diagram Explainer every 3 months. Most recently, Physics Formulas was updated on October 20, 2026 and Diagram Explainer on October 25, 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.*