# Best Proportion Calc vs Relay Ops

The clearest difference is ads: Relay Ops at none against Best Proportion Calc's shown. Relay Ops also leads on update cadence (every 6 days vs every 2 months). Best Proportion Calc's advantage is iOS requirement (14.0 vs 16.4). On price, 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.

Best Proportion Calc ships an update every 2 months, Relay Ops every 6 days. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Best Proportion Calc | Relay Ops |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/best-proportion-calc/id6474536406/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Ad-supported | — |
| Size | 4 MB | 57 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Denis Belmont](https://appshunter.io/developer/1174113984) | [Anna Le](https://appshunter.io/developer/1848071527) |

## What reviewers say

### Best Proportion Calc

[App page](https://appshunter.io/ios/app/best-proportion-calc/id6474536406)

Easily solve proportion problems with a simple and intuitive interface. This app uses the cross product method for quick and accurate calculations across various fields like finance and science. It's available offline and free to use.

**Highlights:** Intuitive proportion calculation, Cross product method for solving equations, Versatile for finance, science, and more, Offline functionality, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


### Relay Ops

[App page](https://appshunter.io/ios/app/relay-ops/id6754372355)

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

**In-app purchases:** none


## Frequently asked questions

### Is Best Proportion Calc free?

Best Proportion Calc is free to download, with no in-app purchases.

### Is Relay Ops free?

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

### Do Best Proportion Calc or Relay Ops have ads?

Best Proportion Calc shows ads; Relay Ops does not.

### Which is updated more often, Best Proportion Calc or Relay Ops?

Best Proportion Calc ships an update every 2 months, and Relay Ops every 6 days. Most recently, Best Proportion Calc was updated on October 1, 2026 and Relay Ops on October 11, 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.*