# Spark Water vs Pooli

The clearest difference is rating: Pooli at 4.6 against Spark Water's 3.0. Pooli also leads on review sentiment (87% vs 50%) and update cadence (every 2 weeks vs every 5 months). Spark Water's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (10.1 vs 15.5). On price, ads, in-app purchases and device support there is nothing between them.

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

Pooli holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: Pooli has 369 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of Spark Water's written reviews are positive against 87% of Pooli's.

Spark Water ships an update every 5 months, Pooli every 2 weeks. The most recent releases landed on June 1, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Spark Water | Pooli |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/spark-water/id1209817279/reviews) | **[4.6 (369 ratings)](https://appshunter.io/ios/app/pooli/id1491565847/reviews)** |
| Number of ratings | 2 | **369** |
| Positive reviews | 50.0% of reviews | **86.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 49 MB | 122 MB |
| Requires iOS | **10.1** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Spark Diagnostics LLC](https://appshunter.io/developer/1197766868) | [Pooli, Inc.](https://appshunter.io/developer/376941984) |

## What reviewers say

### Spark Water

[App page](https://appshunter.io/ios/app/spark-water/id1209817279)

This app automatically reads water test strips using your smartphone camera, providing immediate and accurate results for pool and spa water chemistry. It helps you monitor trends and interpret results easily, ensuring optimal water balance without complex visual charts.

**Highlights:** Automatic test strip reading via camera, Immediate and accurate results, Trend monitoring with historical data, Simple color-coded result interpretation, Supports pool and spa water parameters

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Spark Water free?

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

### Is Pooli free?

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

### Which has better reviews, Spark Water or Pooli?

Pooli is rated higher. Spark Water averages 3.0 out of 5 from 2 ratings, while Pooli averages 4.6 from 369 ratings.

### Do Spark Water or Pooli have ads?

Neither Spark Water nor Pooli shows ads.

### Which is updated more often, Spark Water or Pooli?

Spark Water ships an update every 5 months, and Pooli every 2 weeks. Most recently, Spark Water was updated on June 1, 2026 and Pooli on September 20, 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.*