# Pooli vs TrimCal 4000

The clearest difference is iOS requirement: TrimCal 4000 at 13.5 against Pooli's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Pooli ships an update every 2 weeks, TrimCal 4000 every 10 days. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Pooli | TrimCal 4000 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (369 ratings)](https://appshunter.io/ios/app/pooli/id1491565847/reviews)** | — |
| Number of ratings | **369** | — |
| Positive reviews | 86.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 124 MB | 38 MB |
| Requires iOS | 16.0 | **13.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pooli, Inc.](https://appshunter.io/developer/376941984) | [Nci Technology Inc.](https://appshunter.io/developer/868272704) |

## What reviewers say

### Pooli

[App page](https://appshunter.io/ios/app/pooli/id1491565847)

This app helps you maintain a clean and safe pool or spa with smart testing, tailored advice, and customized task lists. It offers advanced AI for instant feedback, problem resolution guidance, and comprehensive sanitization support. Track multiple pools, manage inventory, and even collaborate with others for effortless pool care.

**Highlights:** Smart water testing with manual entry or strip scanning, Interactive Calcite Saturation Index (CSI) tool, Tailored reports and expert maintenance advice, Advanced AI for instant pool questions, Customized task lists and reminders, Multi-pool and spa management, Chemical inventory tracking with restock reminders

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Helpful for maintaining pool/spa
- 💡 Customizable features
- 👍 Accurate water chemistry calculations
- 👍 Useful reminders and tracking

**What reviewers complain about**

- 🐛 Inconsistent test strip scanning
- 💰 Expensive subscription model
- 🔍 Limited free features
- 🐛 Bugs and glitches in the app

**Reported bugs**

- Inventory management issues
- Reminders triggering at inconvenient times

**Requested features**

- Ability to add equipment details and service history
- Integration with calendar apps for reminders
- More customization options for ideal water levels
- Improved test strip scanning accuracy


### TrimCal 4000

[App page](https://appshunter.io/ios/app/trimcal-4000/id6755869998)

**In-app purchases:** none


## Frequently asked questions

### Is Pooli free?

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

### Is TrimCal 4000 free?

TrimCal 4000 is free to download, with no in-app purchases.

### Do Pooli or TrimCal 4000 have ads?

Neither Pooli nor TrimCal 4000 shows ads.

### Which is updated more often, Pooli or TrimCal 4000?

Pooli ships an update every 2 weeks, and TrimCal 4000 every 10 days. Most recently, Pooli was updated on October 25, 2026 and TrimCal 4000 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.*