# Fi vs FluidLogic®

The clearest difference is ratings volume: Fi at 42K against FluidLogic®'s 5. Fi also leads on update cadence (weekly vs monthly). FluidLogic®'s advantage is rating (5.0 vs 4.6) and iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

FluidLogic® holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Fi has 42K ratings behind it against 5, so its average is the more settled of the two.

Fi ships an update weekly, FluidLogic® monthly. The most recent releases landed on October 27, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Fi | FluidLogic® |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (42K ratings)](https://appshunter.io/ios/app/fi-gps-dog-tracker/id1438036784/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/fluidlogic/id6444137412/reviews)** |
| Number of ratings | **42K** | 5 |
| Positive reviews | 37.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free | Free |
| Size | 199 MB | 53 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Barking Labs Corp.](https://appshunter.io/developer/1002251935) | [Fluidlogic, Inc.](https://appshunter.io/developer/1494959180) |

## What reviewers say

### Fi

[App page](https://appshunter.io/ios/app/fi-gps-dog-tracker/id1438036784)

This app pairs with a smart collar to provide real-time GPS tracking for your dog. Monitor their activity, health patterns, and receive alerts if they leave designated safe zones. It offers peace of mind for pet owners by keeping them connected to their canine companions.

**Highlights:** Real-time GPS tracking, Geofencing and escape alerts, Activity and health monitoring, AI behavior insights, Lost Dog Mode, Long battery life, Apple Watch integration

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Accurate GPS tracking
- 🔒 Provides peace of mind
- 👍 Helpful customer service
- 🚀 Long battery life
- 👍 Waterproof collar

**What reviewers complain about**

- 🐛 Inaccurate GPS location
- 🔋 Battery drain issues
- 🐛 Unreliable connectivity
- 👎 Intrusive notifications
- 👎 Difficult to cancel subscription

**Reported bugs**

- Collar stops working unexpectedly
- App glitches and crashes
- GPS tracking lags or shows incorrect locations

**Requested features**

- Customizable notification settings
- Offline step/distance tracking
- Ability to edit/delete activity data
- More accurate geofencing options
- Integration with other apps (e.g. Wag)


### 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


## Frequently asked questions

### Is Fi free?

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

### Is FluidLogic® free?

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

### Which has better reviews, Fi or FluidLogic®?

FluidLogic® is rated higher. Fi averages 4.6 out of 5 from 42K ratings, while FluidLogic® averages 5.0 from 5 ratings.

### Do Fi or FluidLogic® have ads?

Neither Fi nor FluidLogic® shows ads.

### Which is updated more often, Fi or FluidLogic®?

Fi ships an update weekly, and FluidLogic® monthly. Most recently, Fi was updated on October 27, 2026 and FluidLogic® on October 4, 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.*