# Sofia VAC vs Aircraft Perf Calculator

The clearest difference is price: Sofia VAC at Free against Aircraft Perf Calculator's $1.99. Sofia VAC also leads on update cadence (every 3 months vs every 7 months). Aircraft Perf Calculator's advantage is review sentiment (50% vs 25%). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Sofia VAC is free to download; Aircraft Perf Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sofia VAC ships an update every 3 months, Aircraft Perf Calculator every 7 months. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Sofia VAC | Aircraft Perf Calculator |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | 25.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 7 months |
| Monetization | **Free** | Paid |
| Size | 25 MB | 14 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DIR SERVICES DE NAVIGATION AERIENNE](https://appshunter.io/developer/1519391493) | [amenai technologies](https://appshunter.io/developer/1699434028) |

## What reviewers say

### Sofia VAC

[App page](https://appshunter.io/ios/app/sofia-vac/id1519391491)

This app provides access to French aeronautical information, including airfield details and dynamic VAC maps. Users can search for airfields by name or code, filter by runway characteristics, and download maps for offline use. It offers personalized map views with various airspace and navigational point overlays.

**Highlights:** Search airfields by name, ICAO code, or map, Filter airfields by runway length and surface, Consult dynamic VAC maps, Personalize map views with airspaces and VFR points, Download maps for offline access, Receive update notifications

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

**In-app purchases:** none


### Aircraft Perf Calculator

[App page](https://appshunter.io/ios/app/aircraft-perf-calculator/id6541753665)

This app provides real-time performance calculations for pilots, converting takeoff numbers into instant readouts. It automatically computes adjusted takeoff distance, corrected climb rate, and runway usage based on current altitude and temperature, eliminating the need for paper charts.

**Highlights:** Real-time performance calculations, Adjusted takeoff distance, Corrected climb rate, Runway usage percentage, Density altitude calculation, Comprehensive airfield database, Geolocation and real-time weather

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

**In-app purchases:** none


## Frequently asked questions

### Is Sofia VAC free?

Sofia VAC is free to download, with no in-app purchases.

### Is Aircraft Perf Calculator free?

Aircraft Perf Calculator costs $1.99, with no in-app purchases.

### Do Sofia VAC or Aircraft Perf Calculator have ads?

Neither Sofia VAC nor Aircraft Perf Calculator shows ads.

### Which is updated more often, Sofia VAC or Aircraft Perf Calculator?

Sofia VAC ships an update every 3 months, and Aircraft Perf Calculator every 7 months. Most recently, Sofia VAC was updated on September 21, 2026 and Aircraft Perf Calculator on September 23, 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.*