# DolphinTech Plus vs Pool Chem Calculator

The clearest difference is rating: Pool Chem Calculator at 4.3 against DolphinTech Plus's 1.7. Pool Chem Calculator also leads on update cadence (every 6 days vs every 4 months) and review sentiment (36% vs 8%). DolphinTech Plus's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume, device support and iOS requirement there is nothing between them.

Both are free to download. Pool Chem Calculator sells 1 in-app purchase, starting at $1.99 per month. DolphinTech Plus asks for nothing beyond the download.

Pool Chem Calculator holds the better App Store score, 4.3 against 1.7. Both are backed by a comparable volume of ratings — 13 and 36 respectively. Written reviews point the same way: 8% of DolphinTech Plus's written reviews are positive against 36% of Pool Chem Calculator's.

DolphinTech Plus ships an update every 4 months, Pool Chem Calculator every 6 days. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | DolphinTech Plus | Pool Chem Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.7 (13 ratings)](https://appshunter.io/ios/app/dolphintech-plus/id1406110365/reviews) | **[4.3 (36 ratings)](https://appshunter.io/ios/app/pool-chem-calculator/id1453351222/reviews)** |
| Number of ratings | 13 | **36** |
| Positive reviews | 8.3% of reviews | **36.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 95 MB | 113 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Maytronics](https://appshunter.io/developer/664564907) | [Gunter Business Solutions Inc](https://appshunter.io/developer/1453351221) |

## What reviewers say

### DolphinTech Plus

[App page](https://appshunter.io/ios/app/dolphintech-plus/id1406110365)

This app offers technicians a clever diagnostic and repair tool for robots. It allows for easy connection, parameter access, and system diagnosis to identify and fix errors. Technicians can also perform various repair actions and access helpful resources.

**Highlights:** Connect to LIBERTY™ Robots, Access robot parameters via Bluetooth, Perform system diagnosis, Execute corrective actions, Activate tic-tac mode, Motor unit replacement, Access knowledge articles and videos

**Features:** Vision Pro support

**In-app purchases:** none


### Pool Chem Calculator

[App page](https://appshunter.io/ios/app/pool-chem-calculator/id1453351222)

This app helps manage pool chemistry with 24 specialized calculators for dosing, pH, and more. It features a customizable maintenance calendar, equipment tracking, and easy report sharing for up to 100 pools. Ideal for maintaining a clean and swim-ready pool.

**Highlights:** 24 precision pool chemical calculators, Customizable maintenance calendar with notifications, Equipment tracking and management, Multi-user pool sharing, Professional report builder, Smart pool route mapping

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Pool Subscription | $1.99 | per month |


## Frequently asked questions

### Is DolphinTech Plus free?

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

### Is Pool Chem Calculator free?

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

### Which has better reviews, DolphinTech Plus or Pool Chem Calculator?

Pool Chem Calculator is rated higher. DolphinTech Plus averages 1.7 out of 5 from 13 ratings, while Pool Chem Calculator averages 4.3 from 36 ratings.

### Do DolphinTech Plus or Pool Chem Calculator have ads?

Pool Chem Calculator shows ads; DolphinTech Plus does not.

### Which is updated more often, DolphinTech Plus or Pool Chem Calculator?

DolphinTech Plus ships an update every 4 months, and Pool Chem Calculator every 6 days. Most recently, DolphinTech Plus was updated on October 11, 2026 and Pool Chem Calculator on October 6, 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.*