# Formula Conversion vs All in One Formula

The clearest difference is update cadence: All in One Formula at every 6 months against Formula Conversion's every 26 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Formula Conversion sells 1 one-off in-app purchase and All in One Formula sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Formula Conversion ships an update every 26 months, All in One Formula every 6 months. The most recent releases landed on September 29, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Formula Conversion | All in One Formula |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 6 months** |
| Size | 2 MB | 90 MB |
| Requires iOS | **14.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Janek Soomets](https://appshunter.io/developer/1315295062) | [Raj Dev Barman](https://appshunter.io/developer/1832913213) |

## What reviewers say

### Formula Conversion

[App page](https://appshunter.io/ios/app/formula-conversion/id1586539965)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade Formula Conversion | $3.99 | one-time |


### All in One Formula

[App page](https://appshunter.io/ios/app/all-in-one-formula-math-ai/id6749927877)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All-in-One Formula Pro | $24.99 | one-time |


## Frequently asked questions

### Is Formula Conversion free?

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

### Is All in One Formula free?

All in One Formula is free to download, with in-app purchases available.

### Do Formula Conversion or All in One Formula have ads?

Neither Formula Conversion nor All in One Formula shows ads.

### Which is updated more often, Formula Conversion or All in One Formula?

Formula Conversion ships an update every 26 months, and All in One Formula every 6 months. Most recently, Formula Conversion was updated on September 29, 2026 and All in One Formula on October 6, 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.*