# KnowS vs MARINA Easy

The clearest difference is review sentiment: KnowS at 100% against MARINA Easy's 9%. MARINA Easy's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, 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.

KnowS ships an update monthly, MARINA Easy every 2 weeks. The most recent releases landed on October 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | KnowS | MARINA Easy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/marina-easy/id6467756507/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **100.0% of reviews** | 9.1% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 65 MB | 56 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KnowS](https://appshunter.io/developer/1534573400) | [INNOVATIVE WATER CARE EUROPE](https://appshunter.io/developer/1441771088) |

## What reviewers say

### KnowS

[App page](https://appshunter.io/ios/app/knows/id6457317054)

Connect with local service providers or offer your skills to earn extra income. This platform facilitates finding help for tasks like household chores, moving, or tutoring, while also enabling users to monetize their expertise. Enjoy verified profiles, insured bookings, and community reviews for a trustworthy experience.

**Highlights:** Find local service providers, Offer skills for income, Verified profiles, Insured bookings, Community reviews, Wide range of services, Fair pricing

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


### MARINA Easy

[App page](https://appshunter.io/ios/app/marina-easy/id6467756507)

This app simplifies pool and spa water testing. It guides you through tests, analyzes results with advanced algorithms, and provides personalized treatment recommendations. Track your water quality history for worry-free swimming.

**Highlights:** Step-by-step water testing guide, Advanced analysis of test results, Personalized treatment recommendations, Track water quality history, Manage multiple pools/spas

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

**In-app purchases:** none


## Frequently asked questions

### Is KnowS free?

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

### Is MARINA Easy free?

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

### Do KnowS or MARINA Easy have ads?

KnowS shows ads; MARINA Easy does not.

### Which is updated more often, KnowS or MARINA Easy?

KnowS ships an update monthly, and MARINA Easy every 2 weeks. Most recently, KnowS was updated on October 3, 2026 and MARINA Easy on October 24, 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.*