# KiActiv Sync vs CEFREF

The clearest difference is in-app purchases: KiActiv Sync at none against CEFREF's 3. KiActiv Sync also leads on iOS requirement (9.0 vs 15.0). CEFREF's advantage is update cadence (every 3 weeks vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. CEFREF sells 3 in-app purchases, starting at $2.99 per month. KiActiv Sync asks for nothing beyond the download.

KiActiv Sync ships an update every 9 months, CEFREF every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | KiActiv Sync | CEFREF |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 70 MB | 0 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ki Performance Lifestyle Ltd](https://appshunter.io/developer/1105071460) | [Ceftronics Limited](https://appshunter.io/developer/1594794451) |

## What reviewers say

### KiActiv Sync

[App page](https://appshunter.io/ios/app/kiactiv-sync/id1588254661)

**Features:** macOS Compatibility

**In-app purchases:** none


### CEFREF

[App page](https://appshunter.io/ios/app/cefref-migraine-tracker/id1594794449)

This app simplifies migraine tracking with quick logging of pain and medication. It helps users identify patterns and generates shareable PDF reports for healthcare providers. Designed for ease of use without ads or distractions.

**Highlights:** Quick headache and medication logging, Identify migraine patterns and trends, Generate shareable PDF reports, Ad-free and private tracking, Simple, clutter-free interface

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CEFREF Premium | $2.99 | per month |
| Data Export | $0.99 | one-time |
| CEFREF Premium | $9.99 | one-time |


## Frequently asked questions

### Is KiActiv Sync free?

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

### Is CEFREF free?

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

### Do KiActiv Sync or CEFREF have ads?

Neither KiActiv Sync nor CEFREF shows ads.

### Which is updated more often, KiActiv Sync or CEFREF?

KiActiv Sync ships an update every 9 months, and CEFREF every 3 weeks. Most recently, KiActiv Sync was updated on October 25, 2026 and CEFREF on October 24, 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.*