# HidrateSpark Water Tracker vs KIS admin

The clearest difference is in-app purchases: KIS admin at none against HidrateSpark Water Tracker's 3. KIS admin also leads on iOS requirement (12.0 vs 16.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. HidrateSpark Water Tracker sells 3 in-app purchases, starting at $1.99 per month. KIS admin asks for nothing beyond the download.

HidrateSpark Water Tracker ships an update every 3 weeks, KIS admin every 6 weeks. The most recent releases landed on November 12, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | HidrateSpark Water Tracker | KIS admin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (20K ratings)](https://appshunter.io/ios/app/hidratespark-water-tracker/id1056269374/reviews)** | — |
| Number of ratings | **20K** | — |
| Positive reviews | 29.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 313 MB | 5 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hidrate Inc.](https://appshunter.io/developer/1056269373) | [KIS HAIR PTY LTD](https://appshunter.io/developer/1799948312) |

## What reviewers say

### HidrateSpark Water Tracker

[App page](https://appshunter.io/ios/app/hidratespark-water-tracker/id1056269374)

This app helps you build a lasting hydration habit by calculating personalized daily water goals and providing timely reminders. Track various beverages, compete with friends, and unlock achievements to stay motivated and improve your overall health and well-being.

**Highlights:** Personalized daily water goal calculation, Smart drink water reminders, Track water, tea, and coffee, Compete with friends and join challenges, Unlock trophies and hydration streaks, Apple Watch and Apple Health integration, Home screen widgets

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HidrateSpark PREMIUM | $1.99 | per month |
| HidrateSpark PREMIUM | $14.99 | per year |
| Glow Studio | $4.99 | one-time |

**What reviewers like**

- 🚀 Accurate water tracking
- 👍 Helpful reminders and notifications
- 💡 Customizable glow colors
- 👍 Solid bottle design and quality
- 👍 Good customer service

**What reviewers complain about**

- 🐛 Buggy app with sync issues
- 💰 Paid subscription for basic features
- 🔋 Battery life concerns
- 🔒 Privacy/data collection concerns
- 👎 Confusing app UI and navigation

**Reported bugs**

- App crashes and data loss
- Inconsistent water tracking
- Connectivity issues with bottle
- Unreliable battery level reporting

**Requested features**

- Add custom drink types
- Improve Apple Watch integration
- Provide battery percentage indicator
- Allow more customization options
- Improve social features and challenges


### KIS admin

[App page](https://appshunter.io/ios/app/kis-admin/id6742785596)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HidrateSpark Water Tracker free?

HidrateSpark Water Tracker is free to download, with in-app purchases available.

### Is KIS admin free?

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

### Do HidrateSpark Water Tracker or KIS admin have ads?

Neither HidrateSpark Water Tracker nor KIS admin shows ads.

### Which is updated more often, HidrateSpark Water Tracker or KIS admin?

HidrateSpark Water Tracker ships an update every 3 weeks, and KIS admin every 6 weeks. Most recently, HidrateSpark Water Tracker was updated on November 12, 2026 and KIS admin 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.*