# Poolistry vs Pool Foil App

The clearest difference is in-app purchases: Pool Foil App at none against Poolistry's 3. Pool Foil App also leads on ads (none vs shown) and update cadence (daily vs every 5 days). Poolistry's advantage is iOS requirement (15.0 vs 17.0). 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. Pool Foil App asks for nothing beyond the download.

Poolistry ships an update every 5 days, Pool Foil App daily. Both last shipped on September 9, 2026.

## The numbers

| Metric | Poolistry | Pool Foil App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (22 ratings)](https://appshunter.io/ios/app/poolistry-pool-calculator/id6748267875/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 52 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yonah Systems](https://appshunter.io/developer/1694042531) | [Samuel Slivos](https://appshunter.io/developer/1867294194) |

## What reviewers say

### 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 |


### Pool Foil App

[App page](https://appshunter.io/ios/app/pool-foil-app/id6761769797)

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

**In-app purchases:** none


## Frequently asked questions

### Is Poolistry free?

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

### Is Pool Foil App free?

Pool Foil App is free to download, with no in-app purchases.

### Do Poolistry or Pool Foil App have ads?

Poolistry shows ads; Pool Foil App does not.

### Which is updated more often, Poolistry or Pool Foil App?

Poolistry ships an update every 5 days, and Pool Foil App daily. Most recently, Poolistry was updated on September 9, 2026 and Pool Foil App on September 9, 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.*