# KnowSelf vs HydroCity

The clearest difference is in-app purchases: HydroCity at none against KnowSelf's 1. HydroCity also leads on ads (none vs shown). KnowSelf's advantage is ratings volume (37 vs 4) and iOS requirement (15.0 vs 18.6). On price, rating and device support there is nothing between them.

Both are free to download. KnowSelf sells 1 one-off in-app purchase. HydroCity asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for KnowSelf against 5.0 for HydroCity. That said, the two scores are not equally well evidenced: KnowSelf has 37 ratings behind it against 4, so its average is the more settled of the two.

## The numbers

| Metric | KnowSelf | HydroCity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (37 ratings)](https://appshunter.io/ios/app/knowself-personality-and-mood/id1663497226/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/hydrocity/id6760506498/reviews)** |
| Number of ratings | **37** | 4 |
| Positive reviews | 57.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 87 MB | 2 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Baofeng County Jixu Education Information Consulting Co., Ltd.](https://appshunter.io/developer/1298441489) | [Tenzing Bhutia](https://appshunter.io/developer/1884744508) |

## What reviewers say

### KnowSelf

[App page](https://appshunter.io/ios/app/knowself-personality-and-mood/id1663497226)

Discover your unique strengths and enhance self-awareness with a professional psychological assessment tool. This app utilizes a refined question bank based on established psychological theories to help you understand your personality type.

**Highlights:** Professional psychological assessment, Refined 6-option question bank, Enhance self-awareness, Discover unique strengths, Based on MBTI theory, Career and love match insights

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MBTI Report Pro Version | $1.99 | one-time |


### HydroCity

[App page](https://appshunter.io/ios/app/hydrocity/id6760506498)

This app provides real-time information on NYC water infrastructure issues, including flooding and leaks. Users can report problems, view incident history for any neighborhood, and stay informed about their community's water systems.

**Highlights:** Real-time water incident mapping, Report new water issues, Attach photo evidence to reports, Confirm neighbor reports, View neighborhood water incident history, Interactive city map

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KnowSelf free?

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

### Is HydroCity free?

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

### Which has better reviews, KnowSelf or HydroCity?

HydroCity is rated higher. KnowSelf averages 4.9 out of 5 from 37 ratings, while HydroCity averages 5.0 from 4 ratings.

### Do KnowSelf or HydroCity have ads?

KnowSelf shows ads; HydroCity does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*