# Calculus Formulas vs Atom Worldbox

The clearest difference is ads: Calculus Formulas at none against Atom Worldbox's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Calculus Formulas sells 3 in-app purchases, starting at $4.99 per 7 days and Atom Worldbox sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Calculus Formulas | Atom Worldbox |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 2 days |
| Size | 48 MB | 22 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mobin Akhter](https://appshunter.io/developer/1812505286) | [GEOCO YAZILIM ANONIM SIRKETI](https://appshunter.io/developer/6782131734) |

## What reviewers say

### Calculus Formulas

[App page](https://appshunter.io/ios/app/calculus-formulas-calcref/id6761394165)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| CalcRef Yearly Premium | $44.99 | per year |
| CalcRef Premium Lifetime | $74.99 | one-time |


### Atom Worldbox

[App page](https://appshunter.io/ios/app/atom-worldbox/id6782131732)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Atom Worldbox Pro | $1.99 | one-time |


## Frequently asked questions

### Is Calculus Formulas free?

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

### Is Atom Worldbox free?

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

### Do Calculus Formulas or Atom Worldbox have ads?

Atom Worldbox shows ads; Calculus Formulas does not.

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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.*