# HydroLoop vs VOLT

The clearest difference is in-app purchases: VOLT at none against HydroLoop's 2. VOLT also leads on update cadence (daily vs monthly) and iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. HydroLoop sells 2 in-app purchases, starting at $1.99 per month. VOLT asks for nothing beyond the download.

HydroLoop ships an update monthly, VOLT daily. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | HydroLoop | VOLT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hydroloop-water-tracker/id6782740767/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Monetization | Freemium | — |
| Size | 5 MB | 27 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [MALCOLM VINCENT GERARD](https://appshunter.io/developer/6782740769) | [Narender Vaddepelly](https://appshunter.io/developer/1862573070) |

## What reviewers say

### HydroLoop

[App page](https://appshunter.io/ios/app/hydroloop-water-tracker/id6782740767)

This app gamifies hydration by letting you watch a 3D bottle fill with each sip. It offers personalized daily goals, tracks various beverages, and uses streaks to motivate users. Syncs with Apple Health and provides widgets for easy access.

**Highlights:** Living 3D bottle visualization, Personalized daily hydration goals, Streak tracking and rewards, Logging of various beverage types, Apple Health integration, Home/Lock Screen widgets

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HydroLoop+ Monthly | $1.99 | per month |
| HydroLoop+ Lifetime | $19.99 | one-time |


### VOLT

[App page](https://appshunter.io/ios/app/volt-gym-log-workout-tracker/id6787025785)

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

**In-app purchases:** none


## Frequently asked questions

### Is HydroLoop free?

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

### Is VOLT free?

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

### Do HydroLoop or VOLT have ads?

Neither HydroLoop nor VOLT shows ads.

### Which is updated more often, HydroLoop or VOLT?

HydroLoop ships an update monthly, and VOLT daily. Most recently, HydroLoop was updated on October 6, 2026 and VOLT on October 14, 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.*