# Pool Service Log & Calculator vs Alignment Pro

The clearest difference is price: Pool Service Log & Calculator at Free against Alignment Pro's $4.99. Alignment Pro's advantage is in-app purchases (none vs 2) and review sentiment (100% vs 80%). On rating, ratings volume, ads and monetization model there is nothing between them.

Pool Service Log & Calculator is free to download; Alignment Pro costs $4.99 up front. Pool Service Log & Calculator sells 2 in-app purchases, starting at $1.99 per month. Alignment Pro asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Pool Service Log & Calculator against 5.0 for Alignment Pro. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews are what separate them: 80% of Pool Service Log & Calculator's written reviews are positive against 100% of Alignment Pro's.

Pool Service Log & Calculator ships an update every 2 months, Alignment Pro fortnightly. The most recent releases landed on September 17, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Pool Service Log & Calculator | Alignment Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/pool-service-log-and-calculator/id429841967/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/alignment-pro/id6749398832/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Paid | Paid |
| Size | 10 MB | 31 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Verosocial Studio](https://appshunter.io/developer/354566841) | [Jeffrey Andrews](https://appshunter.io/developer/1830329495) |

## What reviewers say

### Pool Service Log & Calculator

[App page](https://appshunter.io/ios/app/pool-service-log-and-calculator/id429841967)

This app calculates precise water volume for any pool shape and includes converters for length, flow, pressure, and temperature. It also offers LSI tools to help manage pool balance and size.

**Highlights:** Any pool shape volume calculation, US gallons, imperial, and liters support, Length, flow, pressure, temperature converters, LSI calculator, Email calculation results, Offline functionality

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PoolCalcs pro monthly | $1.99 | per month |
| Pool Calculators pro lifetime | $14.99 | one-time |


### Alignment Pro

[App page](https://appshunter.io/ios/app/alignment-pro/id6749398832)

This utility app uses your phone's sensors and a tape measure to collect wheel alignment data. It offers simple on-screen guidance, allows for custom vehicle specifications, and includes features like slop compensation and detailed summaries of alignment issues.

**Highlights:** Wheel alignment data collection, On-screen instructions, Custom vehicle specifications, Slop compensation, Alignment summary with implications, Uses phone sensors and tape measure

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

**In-app purchases:** none


## Frequently asked questions

### Is Pool Service Log & Calculator free?

Pool Service Log & Calculator is free to download, with in-app purchases available.

### Is Alignment Pro free?

Alignment Pro costs $4.99, with no in-app purchases.

### Which has better reviews, Pool Service Log & Calculator or Alignment Pro?

Pool Service Log & Calculator and Alignment Pro are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do Pool Service Log & Calculator or Alignment Pro have ads?

Neither Pool Service Log & Calculator nor Alignment Pro shows ads.

### Which is updated more often, Pool Service Log & Calculator or Alignment Pro?

Pool Service Log & Calculator ships an update every 2 months, and Alignment Pro fortnightly. Most recently, Pool Service Log & Calculator was updated on September 17, 2026 and Alignment Pro 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.*