# Boat GPS vs Poolistry

The clearest difference is in-app purchases: Boat GPS at none against Poolistry's 3. Boat GPS also leads on ads (none vs shown). Poolistry's advantage is update cadence (weekly vs every 2 months). On price, device support and iOS requirement there is nothing between them.

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

Boat GPS ships an update every 2 months, Poolistry weekly. The most recent releases landed on October 25, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Boat GPS | Poolistry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (29 ratings)](https://appshunter.io/ios/app/poolistry-pool-calculator/id6748267875/reviews)** |
| Number of ratings | — | **29** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 62 MB | 55 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Chavarria Ospina](https://appshunter.io/developer/1579035297) | [Yonah Systems](https://appshunter.io/developer/1694042531) |

## What reviewers say

### Boat GPS

[App page](https://appshunter.io/ios/app/boat-gps/id6474883242)

**Features:** macOS Compatibility

**In-app purchases:** none


### Poolistry

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

This app simplifies pool maintenance by offering smart calculators for water chemistry and a comprehensive log for tracking tests, chemicals, and tasks. It ensures your pool remains crystal clear with easy-to-follow guidance and cloud backup for your data.

**Highlights:** Smart chemical adjustment calculators, Water chemistry tracking (pH, chlorine, alkalinity, etc.), Maintenance task logging, Chemical addition tracking, Cloud backup and sync, Expense and notes logging

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo 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 Boat GPS free?

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

### Is Poolistry free?

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

### Do Boat GPS or Poolistry have ads?

Poolistry shows ads; Boat GPS does not.

### Which is updated more often, Boat GPS or Poolistry?

Boat GPS ships an update every 2 months, and Poolistry weekly. Most recently, Boat GPS was updated on October 25, 2026 and Poolistry on November 8, 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.*