# Arctan Calculator vs DekaClock

The clearest difference is update cadence: DekaClock at every 2 months against Arctan Calculator's every 12 months. Arctan Calculator's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Arctan Calculator ships an update every 12 months, DekaClock every 2 months. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Arctan Calculator | DekaClock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 months** |
| Size | 43 MB | 2 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stage Coding](https://appshunter.io/developer/1637068135) | [Carsten Traupe](https://appshunter.io/developer/1682760919) |

## What reviewers say

### Arctan Calculator

[App page](https://appshunter.io/ios/app/arctan-calculator/id1618657861)

**Features:** macOS Compatibility

**In-app purchases:** none


### DekaClock

[App page](https://appshunter.io/ios/app/dekaclock/id6447799146)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Arctan Calculator free?

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

### Is DekaClock free?

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

### Do Arctan Calculator or DekaClock have ads?

Neither Arctan Calculator nor DekaClock shows ads.

### Which is updated more often, Arctan Calculator or DekaClock?

Arctan Calculator ships an update every 12 months, and DekaClock every 2 months. Most recently, Arctan Calculator was updated on October 15, 2026 and DekaClock on October 17, 2026.

---

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