# Swim Time Conversion vs ESF

The clearest difference is price: ESF at Free against Swim Time Conversion's $1.99. ESF also leads on update cadence (every 3 months vs every 45 months) and iOS requirement (15.1 vs 18.6). On in-app purchases and device support there is nothing between them.

ESF is free to download; Swim Time Conversion costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Swim Time Conversion ships an update every 45 months, ESF every 3 months. The most recent releases landed on September 29, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Swim Time Conversion | ESF |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/swim-time-conversion/id443797038/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 45 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 1 MB | 35 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TMSoftware](https://appshunter.io/developer/347816073) | [Enric Serrano Murt](https://appshunter.io/developer/1111151114) |

## What reviewers say

### Swim Time Conversion

[App page](https://appshunter.io/ios/app/swim-time-conversion/id443797038)

This tool converts swimming race times between various distance and pool configurations. It supports conversions from Long Course meters, Short Course Meters, and Short Course Yards to any other system.

**Highlights:** Converts between Long Course meters, Short Course Meters, and Short Course Yards, Supports conversion to any other system, Handles different distances and strokes, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### ESF

[App page](https://appshunter.io/ios/app/esf/id1441362200)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Swim Time Conversion free?

Swim Time Conversion costs $1.99, with no in-app purchases.

### Is ESF free?

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

### Which is updated more often, Swim Time Conversion or ESF?

Swim Time Conversion ships an update every 45 months, and ESF every 3 months. Most recently, Swim Time Conversion was updated on September 29, 2026 and ESF on October 1, 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.*