# Formula Conversion vs SpaceFold

The clearest difference is in-app purchases: SpaceFold at none against Formula Conversion's 1. SpaceFold also leads on update cadence (weekly vs every 26 months). Formula Conversion's advantage is iOS requirement (14.1 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Formula Conversion sells 1 one-off in-app purchase. SpaceFold asks for nothing beyond the download.

Formula Conversion ships an update every 26 months, SpaceFold weekly. The most recent releases landed on June 12, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Formula Conversion | SpaceFold |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 26 months | **Weekly** |
| Size | 2 MB | 6 MB |
| Requires iOS | **14.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Janek Soomets](https://appshunter.io/developer/1315295062) | [GALGOTIAS UNIVERSITY,SCHOOL OF BUSINESS](https://appshunter.io/developer/1804867214) |

## 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 |


### SpaceFold

[App page](https://appshunter.io/ios/app/spacefold/id6778677783)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Formula Conversion free?

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

### Is SpaceFold free?

SpaceFold is free to download, with no in-app purchases.

### Do Formula Conversion or SpaceFold have ads?

Neither Formula Conversion nor SpaceFold shows ads.

### Which is updated more often, Formula Conversion or SpaceFold?

Formula Conversion ships an update every 26 months, and SpaceFold weekly. Most recently, Formula Conversion was updated on June 12, 2026 and SpaceFold on September 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*