# cFormula vs Hours & Decimals

The clearest difference is in-app purchases: Hours & Decimals at none against cFormula's 1. Hours & Decimals also leads on ads (none vs shown) and update cadence (every 5 days vs every 5 months). cFormula's advantage is iOS requirement (13.0 vs 17). On price and device support there is nothing between them.

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

cFormula ships an update every 5 months, Hours & Decimals every 5 days. The most recent releases landed on October 10, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | cFormula | Hours & Decimals |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 5 days** |
| Size | 13 MB | 7 MB |
| Requires iOS | **13.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [疆 边](https://appshunter.io/developer/1124320934) | [RAPHAEL GAUTHIER](https://appshunter.io/developer/6775521542) |

## What reviewers say

### 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 |


### Hours & Decimals

[App page](https://appshunter.io/ios/app/hours-and-decimals/id6775521540)

**In-app purchases:** none


## Frequently asked questions

### Is cFormula free?

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

### Is Hours & Decimals free?

Hours & Decimals is free to download, with no in-app purchases.

### Do cFormula or Hours & Decimals have ads?

cFormula shows ads; Hours & Decimals does not.

### Which is updated more often, cFormula or Hours & Decimals?

cFormula ships an update every 5 months, and Hours & Decimals every 5 days. Most recently, cFormula was updated on October 10, 2026 and Hours & Decimals on October 13, 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.*