# Phlex Swim App vs BSICoS

The clearest difference is in-app purchases: BSICoS at none against Phlex Swim App's 2. BSICoS also leads on ads (none vs shown). Phlex Swim App's advantage is update cadence (every 3 weeks vs every 6 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Phlex Swim App sells 2 in-app purchases, starting at $12.99 per month. BSICoS asks for nothing beyond the download.

Phlex Swim App ships an update every 3 weeks, BSICoS every 6 months. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Phlex Swim App | BSICoS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (38 ratings)](https://appshunter.io/ios/app/phlex-swim-app/id6446498031/reviews)** | — |
| Number of ratings | **38** | — |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Monetization | Free with in-app purchases | — |
| Size | 189 MB | 37 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Phlex LLC](https://appshunter.io/developer/1450954632) | [Diego Cajal](https://appshunter.io/developer/1816704977) |

## What reviewers say

### Phlex Swim App

[App page](https://appshunter.io/ios/app/phlex-swim-app/id6446498031)

This app offers advanced swimming workout tracking with AI-powered precision. It monitors distance, time, technique, heart rate, and training effect, providing insights into progress and areas for improvement. Integrates with HealthKit for a comprehensive health overview.

**Highlights:** AI-powered workout tracking, Distance, time, and set recognition, Technique analysis (distance per stroke, efficiency), Heart rate monitoring, Progress tracking (technique, fitness, endurance, readiness), HealthKit integration

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Membership | $12.99 | per month |
| Annual Membership | $119.99 | per year |


### BSICoS

[App page](https://appshunter.io/ios/app/bsicos/id6746410527)

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

**In-app purchases:** none


## Frequently asked questions

### Is Phlex Swim App free?

Phlex Swim App is free to download, with in-app purchases available.

### Is BSICoS free?

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

### Do Phlex Swim App or BSICoS have ads?

Phlex Swim App shows ads; BSICoS does not.

### Which is updated more often, Phlex Swim App or BSICoS?

Phlex Swim App ships an update every 3 weeks, and BSICoS every 6 months. Most recently, Phlex Swim App was updated on November 3, 2026 and BSICoS 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.*