# Arcsin Calculator vs OziPad.io

The clearest difference is update cadence: OziPad.io at weekly against Arcsin Calculator's every 12 months. Arcsin Calculator's advantage is iOS requirement (13.0 vs 15.6). 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.

Arcsin Calculator ships an update every 12 months, OziPad.io weekly. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Arcsin Calculator | OziPad.io |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Weekly** |
| Size | 43 MB | 103 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [STAGE CODING, Travnik](https://appshunter.io/developer/1637068135) | [OZINY JOINT STOCK COMPANY](https://appshunter.io/developer/1816150498) |

## What reviewers say

### Arcsin Calculator

[App page](https://appshunter.io/ios/app/arcsin-calculator/id1618615902)

**Features:** macOS Compatibility

**In-app purchases:** none


### OziPad.io

[App page](https://appshunter.io/ios/app/ozipadio-encrypt-notes-fast/id6749676407)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Arcsin Calculator free?

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

### Is OziPad.io free?

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

### Do Arcsin Calculator or OziPad.io have ads?

Neither Arcsin Calculator nor OziPad.io shows ads.

### Which is updated more often, Arcsin Calculator or OziPad.io?

Arcsin Calculator ships an update every 12 months, and OziPad.io weekly. Most recently, Arcsin Calculator was updated on October 1, 2026 and OziPad.io on October 7, 2026.

---

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