# Proportion_Calculator vs OnBoard360

The clearest difference is update cadence: OnBoard360 at fortnightly against Proportion_Calculator's every 24 months. Proportion_Calculator's advantage is iOS requirement (13.0 vs 16.6). 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.

Proportion_Calculator ships an update every 24 months, OnBoard360 fortnightly. The most recent releases landed on June 10, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Proportion_Calculator | OnBoard360 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (2 ratings)](https://appshunter.io/ios/app/proportion-calculator/id1601421898/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 19 MB | 44 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ahmad Sattar](https://appshunter.io/developer/1458483953) | [OneTeam360](https://appshunter.io/developer/1590088917) |

## What reviewers say

### Proportion_Calculator

[App page](https://appshunter.io/ios/app/proportion-calculator/id1601421898)

This app helps you find the unknown value in proportions by showing step-by-step calculations. It's useful for various applications, from cooking to science, and offers a simple, fast, and visually appealing way to solve proportion problems.

**Highlights:** Solves for unknown values in proportions, Provides labeled step-by-step explanations, Fast calculation speed, User-friendly interface, Math keyboard for easy input, Smart, eye-friendly color theme

**Features:** macOS Compatibility

**In-app purchases:** none


### OnBoard360

[App page](https://appshunter.io/ios/app/onboard360/id6745823795)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Proportion_Calculator free?

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

### Is OnBoard360 free?

OnBoard360 is free to download, with no in-app purchases.

### Do Proportion_Calculator or OnBoard360 have ads?

Neither Proportion_Calculator nor OnBoard360 shows ads.

### Which is updated more often, Proportion_Calculator or OnBoard360?

Proportion_Calculator ships an update every 24 months, and OnBoard360 fortnightly. Most recently, Proportion_Calculator was updated on June 10, 2026 and OnBoard360 on September 19, 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.*