# Circle Area Calculator Pro vs Wave Spa

The clearest difference is price: Wave Spa at Free against Circle Area Calculator Pro's $1.99. Wave Spa also leads on update cadence (every 3 months vs every 38 months) and ratings volume (9 vs 2). Circle Area Calculator Pro's advantage is rating (5.0 vs 1.9). On ads, in-app purchases and device support there is nothing between them.

Wave Spa is free to download; Circle Area Calculator Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Circle Area Calculator Pro holds the better App Store score, 5.0 against 1.9. Both are backed by a comparable volume of ratings — 2 and 9 respectively.

Circle Area Calculator Pro ships an update every 38 months, Wave Spa every 3 months. The most recent releases landed on October 3, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Circle Area Calculator Pro | Wave Spa |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/circle-area-calculator-pro/id1568066843/reviews)** | [1.9 (9 ratings)](https://appshunter.io/ios/app/wave-spa/id6477339416/reviews) |
| Number of ratings | 2 | **9** |
| Positive reviews | — | 39.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Size | 0 MB | 50 MB |
| Requires iOS | 14.2 | **12.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Anna Filobok](https://appshunter.io/developer/1613515832) | [Wave Direct Limited](https://appshunter.io/developer/1729041395) |

## What reviewers say

### Circle Area Calculator Pro

[App page](https://appshunter.io/ios/app/circle-area-calculator-pro/id1568066843)

This utility app instantly calculates the area of a circle based on its radius or diameter. It seamlessly converts between imperial and metric units in real-time, supporting various measurements like centimeters, meters, inches, feet, and yards.

**Highlights:** Instant circle area calculation, Radius or diameter input, Real-time unit conversion, Imperial and metric system support, Supports centimeters, meters, inches, feet, yards

**Features:** macOS Compatibility

**In-app purchases:** none


### Wave Spa

[App page](https://appshunter.io/ios/app/wave-spa/id6477339416)

Manage your Wi-Fi enabled hot tub remotely. Schedule heating, set up maintenance routines, and optimize energy usage by maintaining idle temperatures. Enjoy a perfectly prepared spa experience anytime, anywhere.

**Highlights:** Remote Wi-Fi spa management, Heating and maintenance scheduling, Energy saving idle temperature, Customizable heating programs, Seamless integration with Wi-Fi spas

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

**In-app purchases:** none


## Frequently asked questions

### Is Circle Area Calculator Pro free?

Circle Area Calculator Pro costs $1.99, with no in-app purchases.

### Is Wave Spa free?

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

### Which has better reviews, Circle Area Calculator Pro or Wave Spa?

Circle Area Calculator Pro is rated higher. Circle Area Calculator Pro averages 5.0 out of 5 from 2 ratings, while Wave Spa averages 1.9 from 9 ratings.

### Do Circle Area Calculator Pro or Wave Spa have ads?

Neither Circle Area Calculator Pro nor Wave Spa shows ads.

### Which is updated more often, Circle Area Calculator Pro or Wave Spa?

Circle Area Calculator Pro ships an update every 38 months, and Wave Spa every 3 months. Most recently, Circle Area Calculator Pro was updated on October 3, 2026 and Wave Spa on October 22, 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.*