# SiBio CKM vs StokeSync

The clearest difference is in-app purchases: SiBio CKM at none against StokeSync's 3. SiBio CKM also leads on iOS requirement (12.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. StokeSync sells 3 in-app purchases, starting at $4.99 per month. SiBio CKM asks for nothing beyond the download.

SiBio CKM ships an update every 2 months, StokeSync every 3 months. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | SiBio CKM | StokeSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (5 ratings)](https://appshunter.io/ios/app/sibio-ckm/id1662078861/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 11.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | — |
| Size | 60 MB | 143 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [SiBio Technology Limited](https://appshunter.io/developer/1652596602) | [STOKESYNC LTD](https://appshunter.io/developer/1829013948) |

## What reviewers say

### SiBio CKM

[App page](https://appshunter.io/ios/app/sibio-ckm/id1662078861)

This app allows users to monitor their real-time blood ketone data through Bluetooth transmission. It provides 14 days of historical data for tracking. Please note, it is for data collection only and not for diagnosis.

**Highlights:** Real-time blood ketone monitoring, 14-day data history, Bluetooth data transmission, Data display and tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### StokeSync

[App page](https://appshunter.io/ios/app/stokesync/id6749166863)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| 6 Months Subscription | $24.99 | per 6 months |
| Yearly Subscription | $49.99 | per year |


## Frequently asked questions

### Is SiBio CKM free?

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

### Is StokeSync free?

StokeSync is free to download, with in-app purchases available.

### Do SiBio CKM or StokeSync have ads?

Neither SiBio CKM nor StokeSync shows ads.

### Which is updated more often, SiBio CKM or StokeSync?

SiBio CKM ships an update every 2 months, and StokeSync every 3 months. Most recently, SiBio CKM was updated on October 5, 2026 and StokeSync on October 7, 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.*