# 99one vs Aquarion

The clearest difference is update cadence: Aquarion at every 3 months against 99one's every 42 months. Aquarion also leads on iOS requirement (14.0 vs 26.0). On price, ads, 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.

99one ships an update every 42 months, Aquarion every 3 months. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | 99one | Aquarion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (928 ratings)](https://appshunter.io/ios/app/aquarion/id6476225222/reviews)** |
| Number of ratings | — | **928** |
| Positive reviews | — | 55.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 42 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 1 MB | 36 MB |
| Requires iOS | 26.0 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [First Response Mental Health](https://appshunter.io/developer/1518087142) | [KUBRA Data Transfer](https://appshunter.io/developer/527959415) |

## What reviewers say

### 99one

[App page](https://appshunter.io/ios/app/99one/id1658640765)

**In-app purchases:** none


### Aquarion

[App page](https://appshunter.io/ios/app/aquarion/id6476225222)

Manage your water account conveniently from your mobile device. This app allows you to view your usage, make payments, and set up automatic billing. You can also schedule appointments and easily reach customer service.

**Highlights:** Paperless billing enrollment, Make payments and set up auto-payments, Track water usage, Schedule meter change appointments, Contact customer service

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 99one free?

99one is free to download, with no in-app purchases.

### Is Aquarion free?

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

### Do 99one or Aquarion have ads?

Neither 99one nor Aquarion shows ads.

### Which is updated more often, 99one or Aquarion?

99one ships an update every 42 months, and Aquarion every 3 months. Most recently, 99one was updated on November 3, 2026 and Aquarion on November 8, 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.*