# Vario One vs IGC Viewer · Flight Log Reader

The clearest difference is update cadence: IGC Viewer · Flight Log Reader at every 9 days against Vario One's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Vario One sells 3 in-app purchases, starting at $3.99 per 7 days and IGC Viewer · Flight Log Reader sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Vario One ships an update every 6 weeks, IGC Viewer · Flight Log Reader every 9 days. The most recent releases landed on September 25, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Vario One | IGC Viewer · Flight Log Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/vario-one/id1605797423/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 85.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 105 MB | 37 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod, Apple Watch | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Leobalo GmbH](https://appshunter.io/developer/1605797425) | [Rush Tools LLC](https://appshunter.io/developer/1896773547) |

## What reviewers say

### Vario One

[App page](https://appshunter.io/ios/app/vario-one/id1605797423)

This app provides a precise variometer for iPhone and Apple Watch, utilizing built-in sensors for real-time lift detection. It offers air traffic awareness, thermal assistance, and flight recording capabilities. Takeoff and landing sites are always visible, with a free 14-day trial for all features.

**Highlights:** Real-time variometer with acoustic lift signals, Air traffic awareness with Safesky integration, Thermal Assistant with climb/sink rate visualization, Flight recording with GPS and IGC tracks, Import flights via GPX/IGC, Standalone Apple Watch functionality, Visible takeoff and landing sites

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7 days for Apple iPhone/Watch | $3.99 | per 7 days |
| 3 month Apple iPhone/Watch | $11.99 | per 3 months |
| 1 year iPhone and Apple Watch | $22.99 | per year |


### IGC Viewer · Flight Log Reader

[App page](https://appshunter.io/ios/app/igc-viewer-flight-log-reader/id6776756718)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $4.99 | per 7 days |
| Yearly Pro | $29.99 | per year |


## Frequently asked questions

### Is Vario One free?

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

### Is IGC Viewer · Flight Log Reader free?

IGC Viewer · Flight Log Reader is free to download, with in-app purchases available.

### Do Vario One or IGC Viewer · Flight Log Reader have ads?

Neither Vario One nor IGC Viewer · Flight Log Reader shows ads.

### Which is updated more often, Vario One or IGC Viewer · Flight Log Reader?

Vario One ships an update every 6 weeks, and IGC Viewer · Flight Log Reader every 9 days. Most recently, Vario One was updated on September 25, 2026 and IGC Viewer · Flight Log Reader on September 17, 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.*