# Calypso Smartime vs KSIX Ring

The clearest difference is iOS requirement: Calypso Smartime at 10.0 against KSIX Ring's 12.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Calypso Smartime ships an update every 6 months, KSIX Ring every 7 months. The most recent releases landed on August 19, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Calypso Smartime | KSIX Ring |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/calypso-smartime/id1482758491/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 7 months |
| Monetization | Free | — |
| Size | 198 MB | 51 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Festina Lotus SA](https://appshunter.io/developer/1114032404) | [KSIX](https://appshunter.io/developer/1775877151) |

## What reviewers say

### Calypso Smartime

[App page](https://appshunter.io/ios/app/calypso-smartime/id1482758491)

This app monitors vital health metrics like heart rate and blood pressure, and tracks sleep patterns. It also offers guided breathing exercises and supports multiple sports modes for activity tracking and progress monitoring.

**Highlights:** Heart rate and blood pressure monitoring, Sleep tracking, Guided breathing exercises, Multi-sport modes (basketball, football, cycling, etc.), Activity data registration and progress monitoring, Integration with Health app

**Features:** Vision Pro support

**In-app purchases:** none


### KSIX Ring

[App page](https://appshunter.io/ios/app/ksix-ring/id6744636975)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calypso Smartime free?

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

### Is KSIX Ring free?

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

### Do Calypso Smartime or KSIX Ring have ads?

Neither Calypso Smartime nor KSIX Ring shows ads.

### Which is updated more often, Calypso Smartime or KSIX Ring?

Calypso Smartime ships an update every 6 months, and KSIX Ring every 7 months. Most recently, Calypso Smartime was updated on August 19, 2026 and KSIX Ring on September 19, 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.*