# Key Calculator vs AimAid

The clearest difference is price: Key Calculator at Free against AimAid's $3.99. Key Calculator also leads on iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Key Calculator is free to download; AimAid costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Key Calculator | AimAid |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 5 months |
| Monetization | — | Paid |
| Size | 27 MB | 109 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [瑞勤 李](https://appshunter.io/developer/1401713785) | [Liu ZhiRong](https://appshunter.io/developer/483400125) |

## What reviewers say

### Key Calculator

[App page](https://appshunter.io/ios/app/key-calculator/id6740821637)

**Features:** macOS Compatibility

**In-app purchases:** none


### AimAid

[App page](https://appshunter.io/ios/app/aimaid/id6741954444)

This utility app helps billiard players calculate the trajectory of a ball based on the aiming angle of the cue. Improve your aim and understanding of ball physics on the table.

**Highlights:** Billiard ball trajectory calculation, Aiming angle input, Cue ball physics simulation, Precision aiming tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Key Calculator free?

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

### Is AimAid free?

AimAid costs $3.99, with no in-app purchases.

### Do Key Calculator or AimAid have ads?

Neither Key Calculator nor AimAid shows ads.

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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.*