# Off 2 vs 飛航軌跡 SkyTrace

The clearest difference is update cadence: Off 2 at every 6 days against 飛航軌跡 SkyTrace's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Off 2 sells 1 one-off in-app purchase and 飛航軌跡 SkyTrace sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Off 2 ships an update every 6 days, 飛航軌跡 SkyTrace every 3 weeks. The most recent releases landed on September 30, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Off 2 | 飛航軌跡 SkyTrace |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 61.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Monetization | Paid | — |
| Size | 188 MB | 1 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Philippe Le Gall](https://appshunter.io/developer/1004932800) | [Su YI-HUNG](https://appshunter.io/developer/6771587681) |

## What reviewers say

### Off 2

[App page](https://appshunter.io/ios/app/off-2-offline-flight-tracker/id6756080778)

Track your flight in real-time, even without an internet connection, using your device's GPS and barometer. Scan your boarding pass to automatically fill in flight details and share your progress with others. Offers advanced features like pilot mode and an aircraft database for aviation enthusiasts.

**Highlights:** Offline real-time flight tracking, Boarding pass scanning, Live flight sharing, Apple Watch complication, Live Activities integration, Multi-sector itinerary planning, Peer chat via Bluetooth/WiFi

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pilot Mode | $2.99 | one-time |


### 飛航軌跡 SkyTrace

[App page](https://appshunter.io/ios/app/skytrace/id6785179585)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $1.99 | one-time |


## Frequently asked questions

### Is Off 2 free?

Off 2 is free to download, with in-app purchases available.

### Is 飛航軌跡 SkyTrace free?

飛航軌跡 SkyTrace is free to download, with in-app purchases available.

### Do Off 2 or 飛航軌跡 SkyTrace have ads?

Neither Off 2 nor 飛航軌跡 SkyTrace shows ads.

### Which is updated more often, Off 2 or 飛航軌跡 SkyTrace?

Off 2 ships an update every 6 days, and 飛航軌跡 SkyTrace every 3 weeks. Most recently, Off 2 was updated on September 30, 2026 and 飛航軌跡 SkyTrace on October 4, 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.*