# Assistant Piscine vs Poolistry

The clearest difference is review sentiment: Poolistry at 100% against Assistant Piscine's 50%. Poolistry also leads on rating (4.9 vs 1.0) and update cadence (weekly vs every 4 months). Assistant Piscine's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Poolistry sells 3 in-app purchases, starting at $1.99 per month. Assistant Piscine asks for nothing beyond the download.

Poolistry holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: Poolistry has 26 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Assistant Piscine's written reviews are positive against 100% of Poolistry's.

Assistant Piscine ships an update every 4 months, Poolistry weekly. The most recent releases landed on October 13, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Assistant Piscine | Poolistry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/assistant-piscine/id1128212854/reviews) | **[4.9 (26 ratings)](https://appshunter.io/ios/app/poolistry-pool-calculator/id6748267875/reviews)** |
| Number of ratings | 1 | **26** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 16 MB | 48 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Philippe Portugal Humeau](https://appshunter.io/developer/1063332029) | [Yonah Systems](https://appshunter.io/developer/1694042531) |

## What reviewers say

### Assistant Piscine

[App page](https://appshunter.io/ios/app/assistant-piscine/id1128212854)

This utility app helps swimming pool owners calculate their pool's volume and determine the precise amount of salt needed. It also estimates the number of salt bags required for treatment.

**Highlights:** Pool volume calculation, Salt dosage calculation, Salt bag quantity estimation, Supports iPhone, iPad, and iPod

**Features:** macOS Compatibility

**In-app purchases:** none


### Poolistry

[App page](https://appshunter.io/ios/app/poolistry-pool-calculator/id6748267875)

This app helps pool owners manage water chemistry and maintenance. It offers smart calculators for chemical adjustments, a comprehensive logging system for tests and tasks, and cloud backup for data synchronization across devices. Keep your pool crystal clear with ease.

**Highlights:** Smart chemical adjustment calculators, Water testing and readings log, Chemical addition tracking, Maintenance task logging, Cloud backup and sync, Expense and notes tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Poolistry - Premium - 1 Month | $1.99 | per month |
| Poolistry - Premium - 1 Year | $9.99 | per year |
| Lifetime Premium Access | $59.99 | one-time |


## Frequently asked questions

### Is Assistant Piscine free?

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

### Is Poolistry free?

Poolistry is free to download, with in-app purchases available.

### Which has better reviews, Assistant Piscine or Poolistry?

Poolistry is rated higher. Assistant Piscine averages 1.0 out of 5 from 1 ratings, while Poolistry averages 4.9 from 26 ratings.

### Do Assistant Piscine or Poolistry have ads?

Poolistry shows ads; Assistant Piscine does not.

### Which is updated more often, Assistant Piscine or Poolistry?

Assistant Piscine ships an update every 4 months, and Poolistry weekly. Most recently, Assistant Piscine was updated on October 13, 2026 and Poolistry on October 28, 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.*