# ACI DSIM vs PoolCheck

The clearest difference is in-app purchases: ACI DSIM at none against PoolCheck's 1. ACI DSIM also leads on iOS requirement (11.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PoolCheck sells 1 one-off in-app purchase. ACI DSIM asks for nothing beyond the download.

ACI DSIM ships an update every 3 weeks, PoolCheck fortnightly. The most recent releases landed on November 3, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | ACI DSIM | PoolCheck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/poolcheck-strip-reader/id6807818685/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 59 MB | 3 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACI Communications, Inc](https://appshunter.io/developer/1141246666) | [Christopher Daniels](https://appshunter.io/developer/6807818687) |

## What reviewers say

### ACI DSIM

[App page](https://appshunter.io/ios/app/aci-dsim/id1550253698)

**Features:** macOS Compatibility

**In-app purchases:** none


### PoolCheck

[App page](https://appshunter.io/ios/app/poolcheck-strip-reader/id6807818685)

Easily test your pool or spa water by photographing your test strips. Get clear chemical dosing instructions, including product amounts and order, to maintain optimal water balance. This app offers a private, ad-free experience with optional in-app purchase to remove ads.

**Highlights:** Photograph test strips for automatic reading, Chemical dose calculator with step-by-step plans, Calculates gallons from pool dimensions, Tracks test history and local weather forecasts, Supports various pool types and finishes, Private by design, no account required

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is ACI DSIM free?

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

### Is PoolCheck free?

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

### Do ACI DSIM or PoolCheck have ads?

Neither ACI DSIM nor PoolCheck shows ads.

### Which is updated more often, ACI DSIM or PoolCheck?

ACI DSIM ships an update every 3 weeks, and PoolCheck fortnightly. Most recently, ACI DSIM was updated on November 3, 2026 and PoolCheck on November 13, 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.*