# Forsta SDK vs Dozecal

The clearest difference is update cadence: Forsta SDK at every 3 months against Dozecal's every 10 months. Dozecal's advantage is iOS requirement (12.0 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.

Forsta SDK ships an update every 3 months, Dozecal every 10 months. The most recent releases landed on October 8, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Forsta SDK | Dozecal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (5 ratings)](https://appshunter.io/ios/app/dozecal/id1521160089/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 10 months |
| Monetization | — | Free |
| Size | 24 MB | 27 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Forsta, Inc.](https://appshunter.io/developer/670071637) | [Johan Kovacs](https://appshunter.io/developer/1486605020) |

## What reviewers say

### Forsta SDK

[App page](https://appshunter.io/ios/app/forsta-sdk/id1112679857)

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

**In-app purchases:** none


### Dozecal

[App page](https://appshunter.io/ios/app/dozecal/id1521160089)

This educational calculator promotes the use of Base Twelve (duodecimal) in math and science. It offers standard mathematical functions in both duodecimal and decimal modes, with automatic conversion between them. It utilizes Reverse Polish Notation (RPN) for calculations.

**Highlights:** Duodecimal and Decimal modes, Automatic mode conversion, RPN (Reverse Polish Notation) input, Standard math functions, Trigonometric operations (degrees), Educational tool for Base Twelve

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Forsta SDK free?

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

### Is Dozecal free?

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

### Do Forsta SDK or Dozecal have ads?

Neither Forsta SDK nor Dozecal shows ads.

### Which is updated more often, Forsta SDK or Dozecal?

Forsta SDK ships an update every 3 months, and Dozecal every 10 months. Most recently, Forsta SDK was updated on October 8, 2026 and Dozecal on October 24, 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.*