# Calculus Formulas vs Toqle

The clearest difference is iOS requirement: Calculus Formulas at 15.1 against Toqle's 26.0. On price, ads, in-app purchases and device support 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 Toqle sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Calculus Formulas | Toqle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 48 MB | 25 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Mobin Akhter](https://appshunter.io/developer/1812505286) | [Yan Soisson](https://appshunter.io/developer/1743665280) |

## 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 |


### Toqle

[App page](https://appshunter.io/ios/app/toqle/id6780029192)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Toqle Plus Monthly | $4.99 | per month |
| Toqle AI Pro Monthly | $14.99 | per month |
| Toqle Plus Yearly | $49.99 | per year |
| Toqle AI Pro Yearly | $149.99 | per year |


## Frequently asked questions

### Is Calculus Formulas free?

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

### Is Toqle free?

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

### Do Calculus Formulas or Toqle have ads?

Neither Calculus Formulas nor Toqle shows ads.

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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.*