# Pool Log vs Pool Doc

The clearest difference is iOS requirement: Pool Doc at 17.6 against Pool Log's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Pool Log sells 2 in-app purchases, starting at $0.99 per month and Pool Doc sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Pool Log ships an update every 4 weeks, Pool Doc every 3 weeks. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Pool Log | Pool Doc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (8 ratings)](https://appshunter.io/ios/app/pool-log/id6744295287/reviews)** | — |
| Number of ratings | **8** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 14 MB | 4 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Michael Holloway](https://appshunter.io/developer/877302832) | [Wenxin Zhang](https://appshunter.io/developer/987244448) |

## What reviewers say

### Pool Log

[App page](https://appshunter.io/ios/app/pool-log/id6744295287)

This app provides precise chemical dosing instructions for pools and spas based on your test results. It tracks multiple water bodies, integrates local weather data, and offers advanced features like SLAM mode for algae and CSI calculations. All data is stored locally for privacy.

**Highlights:** Precise chemical dosing instructions, Manages multiple pools and spas, Weather-aware test result tracking, SLAM mode for algae treatment, Calcite Saturation Index (CSI) calculation, Chemical addition logging, Maintenance task tracking

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $0.99 | per month |
| Annual Plan | $7.99 | per year |


### Pool Doc

[App page](https://appshunter.io/ios/app/pool-doc-pool-chemical-log/id6759406468)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Premium Yearly | $7.99 | per year |


## Frequently asked questions

### Is Pool Log free?

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

### Is Pool Doc free?

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

### Do Pool Log or Pool Doc have ads?

Neither Pool Log nor Pool Doc shows ads.

### Which is updated more often, Pool Log or Pool Doc?

Pool Log ships an update every 4 weeks, and Pool Doc every 3 weeks. Most recently, Pool Log was updated on October 15, 2026 and Pool Doc on October 10, 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.*