# Swim.com vs OSIN

Swim.com and OSIN are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Swim.com ships an update monthly, OSIN every 3 weeks. The most recent releases landed on September 24, 2026 and December 10, 2025 respectively.

## The numbers

| Metric | Swim.com | OSIN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (1.1K ratings)](https://appshunter.io/ios/app/swimcom-swim-tracker/id956030704/reviews)** | — |
| Number of ratings | **1.1K** | — |
| Positive reviews | 41.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 175 MB | 22 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Spiraledge](https://appshunter.io/developer/920364364) | [OSIN LIGHTING LIMITED](https://appshunter.io/developer/1627056818) |

## What reviewers say

### Swim.com

[App page](https://appshunter.io/ios/app/swimcom-swim-tracker/id956030704)

Automatically record and track your swimming workouts with advanced statistics. Compete with friends and other swimmers on global leaderboards, and access thousands of customizable swim workouts.

**Highlights:** Automatic swim recording with Apple Watch, Advanced swim statistics, Stroke type and count detection, Drill Mode for kick tracking, Global leaderboards and friend competition, Thousands of customizable swim workouts

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 👍 Accurate swim tracking
- 🚀 Detailed analytics and metrics
- 💡 Ability to log custom workouts
- 👍 Reliable and consistent performance
- 👍 Great Apple Watch integration

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🐛 Inaccurate lap/distance tracking
- 🐛 Unreliable sync between app and Apple Watch
- 🐛 Confusing or unintuitive user interface
- 🐛 Calories tracking issues

**Reported bugs**

- App crashing or freezing during workouts
- Inconsistent lap/distance tracking
- Sync issues between app and Apple Watch
- Inability to properly log or edit workouts

**Requested features**

- Improved Strava integration
- Better workout scheduling and notification features
- Ability to track kick sets and drills
- More comprehensive data analysis and visualization
- Seamless sync with Apple Health app


### OSIN

[App page](https://appshunter.io/ios/app/osin/id1627056816)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Swim.com free?

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

### Is OSIN free?

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

### Do Swim.com or OSIN have ads?

Neither Swim.com nor OSIN shows ads.

### Which is updated more often, Swim.com or OSIN?

Swim.com ships an update monthly, and OSIN every 3 weeks. Most recently, Swim.com was updated on September 24, 2026 and OSIN on December 10, 2025.

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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.*