# Wellion SiDiary vs Aeternum AirOps

The clearest difference is update cadence: Aeternum AirOps at every 3 months against Wellion SiDiary's every 27 months. Wellion SiDiary's advantage is iOS requirement (12.1 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Wellion SiDiary ships an update every 27 months, Aeternum AirOps every 3 months. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Wellion SiDiary | Aeternum AirOps |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/wellion-sidiary/id1621535711/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 23 MB | 20 MB |
| Requires iOS | **12.1** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Sinovo Ltd. & Co. KG](https://appshunter.io/developer/387195226) | [Aeternum Innovations LTD](https://appshunter.io/developer/1677934702) |

## What reviewers say

### Wellion SiDiary

[App page](https://appshunter.io/ios/app/wellion-sidiary/id1621535711)

Easily log diabetes-related data like blood glucose, blood pressure, and medications on your iPhone. Syncs with compatible devices and the PC version for comprehensive therapy analysis with your healthcare professional.

**Highlights:** Diabetes logbook (glucose, BP, meds), Bluetooth data transfer from compatible devices, Synchronization with PC version and online, Extensive statistics and trend analysis, Customizable data entry and display, Multiple unit and format options

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Aeternum AirOps

[App page](https://appshunter.io/ios/app/aeternum-airops/id6446434890)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Wellion SiDiary free?

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

### Is Aeternum AirOps free?

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

### Do Wellion SiDiary or Aeternum AirOps have ads?

Neither Wellion SiDiary nor Aeternum AirOps shows ads.

### Which is updated more often, Wellion SiDiary or Aeternum AirOps?

Wellion SiDiary ships an update every 27 months, and Aeternum AirOps every 3 months. Most recently, Wellion SiDiary was updated on November 3, 2026 and Aeternum AirOps on October 27, 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.*