# Bubble Level + Compass Pro vs Spark Water

The clearest difference is review sentiment: Bubble Level + Compass Pro at 100% against Spark Water's 50%. Bubble Level + Compass Pro also leads on rating (5.0 vs 3.0) and ratings volume (22 vs 2). Spark Water's advantage is price (Free vs $0.99) and update cadence (every 5 months vs every 17 months). On ads and in-app purchases there is nothing between them.

Spark Water is free to download; Bubble Level + Compass Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Bubble Level + Compass Pro holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Bubble Level + Compass Pro has 22 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Bubble Level + Compass Pro's written reviews are positive against 50% of Spark Water's.

Bubble Level + Compass Pro ships an update every 17 months, Spark Water every 5 months. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Bubble Level + Compass Pro | Spark Water |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (22 ratings)](https://appshunter.io/ios/app/bubble-level-plus-compass-pro/id988590222/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/spark-water/id1209817279/reviews) |
| Number of ratings | **22** | 2 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 5 months** |
| Monetization | Paid | **Free** |
| Size | 7 MB | 49 MB |
| Requires iOS | 12.0 | **10.1** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dimitrios Kechagias](https://appshunter.io/developer/970157964) | [SPARK DIAGNOSTICS, LLC](https://appshunter.io/developer/1197766868) |

## What reviewers say

### Bubble Level + Compass Pro

[App page](https://appshunter.io/ios/app/bubble-level-plus-compass-pro/id988590222)

This utility app provides a precise spirit level and compass for your iPhone and Apple Watch. Get live readings on your wrist, even when your phone's screen is out of sight. Features include bullseye, horizontal, and vertical levels with 0.1-degree precision.

**Highlights:** Bullseye, horizontal, and vertical levels, 0.1-degree precision, True and magnetic heading, Apple Watch companion app, Gyro or accelerometer sensor mode, Red-light night mode

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Bubble Level + Compass Pro free?

Bubble Level + Compass Pro costs $0.99, with no in-app purchases.

### Is Spark Water free?

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

### Which has better reviews, Bubble Level + Compass Pro or Spark Water?

Bubble Level + Compass Pro is rated higher. Bubble Level + Compass Pro averages 5.0 out of 5 from 22 ratings, while Spark Water averages 3.0 from 2 ratings.

### Do Bubble Level + Compass Pro or Spark Water have ads?

Neither Bubble Level + Compass Pro nor Spark Water shows ads.

### Which is updated more often, Bubble Level + Compass Pro or Spark Water?

Bubble Level + Compass Pro ships an update every 17 months, and Spark Water every 5 months. Most recently, Bubble Level + Compass Pro was updated on October 10, 2026 and Spark Water on October 3, 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.*