# Ratio Calculator vs Operations Diary

The clearest difference is update cadence: Operations Diary at weekly against Ratio Calculator's every 35 months. Operations Diary also leads on price ($0.99 vs $4.99). Ratio Calculator's advantage is iOS requirement (12.0 vs 15.5). On ads, in-app purchases and device support there is nothing between them.

Ratio Calculator costs $4.99 and Operations Diary $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Ratio Calculator ships an update every 35 months, Operations Diary weekly. The most recent releases landed on November 3, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Ratio Calculator | Operations Diary |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 35 months | **Weekly** |
| Size | 28 MB | 34 MB |
| Requires iOS | **12.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) | [Lars Schaefer-Dryden](https://appshunter.io/developer/642726139) |

## What reviewers say

### Ratio Calculator

[App page](https://appshunter.io/ios/app/ratio-calculator-proportion/id1522863550)

**Features:** Vision Pro support

**In-app purchases:** none


### Operations Diary

[App page](https://appshunter.io/ios/app/operations-diary/id6760564390)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ratio Calculator free?

Ratio Calculator costs $4.99, with no in-app purchases.

### Is Operations Diary free?

Operations Diary costs $0.99, with no in-app purchases.

### Do Ratio Calculator or Operations Diary have ads?

Neither Ratio Calculator nor Operations Diary shows ads.

### Which is updated more often, Ratio Calculator or Operations Diary?

Ratio Calculator ships an update every 35 months, and Operations Diary weekly. Most recently, Ratio Calculator was updated on November 3, 2026 and Operations Diary on November 13, 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.*