# Swimming Pool Calculator vs vform

The clearest difference is price: vform at Free against Swimming Pool Calculator's $4.99. vform also leads on in-app purchases (none vs 5) and update cadence (every 2 weeks vs every 2 months). On ads, device support and iOS requirement there is nothing between them.

vform is free to download; Swimming Pool Calculator costs $4.99 up front. Swimming Pool Calculator sells 4 in-app purchases, starting at $4.49 per 3 months. vform asks for nothing beyond the download.

Swimming Pool Calculator ships an update every 2 months, vform every 2 weeks. The most recent releases landed on October 14, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Swimming Pool Calculator | vform |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.0 (43 ratings)](https://appshunter.io/ios/app/swimming-pool-calculator/id1591745680/reviews)** | — |
| Number of ratings | **43** | — |
| Positive reviews | 49.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 116 MB | 28 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Fernando Montero](https://appshunter.io/developer/1591745682) | [Alvaro Valenzuela](https://appshunter.io/developer/463238847) |

## What reviewers say

### Swimming Pool Calculator

[App page](https://appshunter.io/ios/app/swimming-pool-calculator/id1591745680)

Easily calculate necessary pool chemicals and troubleshoot common water issues like green or cloudy water. This app provides daily and weekly maintenance routines to keep your pool water crystal clear and ready for swimming.

**Highlights:** Chemical calculation, Water issue troubleshooting, Daily maintenance routines, Weekly maintenance routines, Crystal clear water maintenance

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Suscripción Premium | $4.49 | per 3 months |
| Suscripción Gold | $6.99 | per 3 months |
| Suscripción Platinum | $7.99 | per month |
| Suscripción Adamantium | $49.99 | per month |


### vform

[App page](https://appshunter.io/ios/app/vform/id6499164176)

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

**In-app purchases:** none


## Frequently asked questions

### Is Swimming Pool Calculator free?

Swimming Pool Calculator costs $4.99, and also offers in-app purchases.

### Is vform free?

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

### Do Swimming Pool Calculator or vform have ads?

Neither Swimming Pool Calculator nor vform shows ads.

### Which is updated more often, Swimming Pool Calculator or vform?

Swimming Pool Calculator ships an update every 2 months, and vform every 2 weeks. Most recently, Swimming Pool Calculator was updated on October 14, 2026 and vform on September 18, 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.*