# FluidLogic® vs Amulet Scientific

The clearest difference is update cadence: FluidLogic® at monthly against Amulet Scientific's every 6 months. 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.

FluidLogic® ships an update monthly, Amulet Scientific every 6 months. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | FluidLogic® | Amulet Scientific |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/fluidlogic/id6444137412/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 months |
| Monetization | Free | — |
| Size | 53 MB | 73 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fluidlogic, Inc.](https://appshunter.io/developer/1494959180) | [Allergy Amulet](https://appshunter.io/developer/1577982070) |

## What reviewers say

### FluidLogic®

[App page](https://appshunter.io/ios/app/fluidlogic/id6444137412)

This app provides a personalized, science-backed hydration plan to optimize performance and recovery. It works with a smart hydration pack to track intake, offer haptic reminders, and allow for on-demand water delivery.

**Highlights:** Personalized hydration protocol, Customizable dose and interval settings, Haptic hydration reminders, Remote push-to-drink control, Real-time tracking and insights, Seamless system integration

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

**In-app purchases:** none


### Amulet Scientific

[App page](https://appshunter.io/ios/app/amulet-scientific/id6744033811)

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

**In-app purchases:** none


## Frequently asked questions

### Is FluidLogic® free?

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

### Is Amulet Scientific free?

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

### Do FluidLogic® or Amulet Scientific have ads?

Neither FluidLogic® nor Amulet Scientific shows ads.

### Which is updated more often, FluidLogic® or Amulet Scientific?

FluidLogic® ships an update monthly, and Amulet Scientific every 6 months. Most recently, FluidLogic® was updated on October 4, 2026 and Amulet Scientific on October 6, 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.*