# Simple Pool vs SplashLens

Simple Pool and SplashLens are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Simple Pool sells 1 one-off in-app purchase and SplashLens sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 6 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Simple Pool | SplashLens |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (21 ratings)](https://appshunter.io/ios/app/simple-pool-chemistry-and-math/id6744664712/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | Every 6 days |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 0 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Grey Park, LLC](https://appshunter.io/developer/1739831354) | [Joshua Frost](https://appshunter.io/developer/1892695619) |

## What reviewers say

### Simple Pool

[App page](https://appshunter.io/ios/app/simple-pool-chemistry-and-math/id6744664712)

This app helps you precisely test, dose, and track your pool and spa water chemistry. It offers practical dosing recommendations and tools to simplify routine maintenance for various pool types. Get accurate chemical calculations without ongoing fees.

**Highlights:** Water test logging, Dosing recommendations, Chemical tracking, LSI/CSI monitoring, Shock treatment mode, Test reminders, Chemical effects preview

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SimplePool - Lifetime | $9.99 | one-time |


### SplashLens

[App page](https://appshunter.io/ios/app/splashlens/id6763644905)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PartSnap Pro Monthly | $4.99 | per month |
| PartSnap Pro Annual | $39.00 | per year |


## Frequently asked questions

### Is Simple Pool free?

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

### Is SplashLens free?

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

### Do Simple Pool or SplashLens have ads?

Neither Simple Pool nor SplashLens shows ads.

### Which is updated more often, Simple Pool or SplashLens?

Simple Pool ships an update every 6 days, and SplashLens every 6 days. Most recently, Simple Pool was updated on October 30, 2026 and SplashLens on October 31, 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.*