# Custom Real vs cFormula

The clearest difference is in-app purchases: Custom Real at none against cFormula's 1. Custom Real also leads on update cadence (every 3 days vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. cFormula sells 1 one-off in-app purchase. Custom Real asks for nothing beyond the download.

Custom Real ships an update every 3 days, cFormula every 5 months. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Custom Real | cFormula |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Every 5 months |
| Size | 5 MB | 13 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [kenta hamazaki](https://appshunter.io/developer/1589193489) | [疆 边](https://appshunter.io/developer/1124320934) |

## What reviewers say

### Custom Real

[App page](https://appshunter.io/ios/app/custom-real-time-calculator/id6449462897)

**Features:** macOS Compatibility

**In-app purchases:** none


### cFormula

[App page](https://appshunter.io/ios/app/cformula/id6475750528)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fully unlock app | $1.99 | one-time |


## Frequently asked questions

### Is Custom Real free?

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

### Is cFormula free?

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

### Do Custom Real or cFormula have ads?

Both Custom Real and cFormula show ads.

### Which is updated more often, Custom Real or cFormula?

Custom Real ships an update every 3 days, and cFormula every 5 months. Most recently, Custom Real was updated on October 15, 2026 and cFormula on October 10, 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.*