# WKGSIM vs VOG

The clearest difference is update cadence: VOG at weekly against WKGSIM's every 7 months. 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.

WKGSIM ships an update every 7 months, VOG weekly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | WKGSIM | VOG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (6 ratings)](https://appshunter.io/ios/app/vog-altimeter/id1511161657/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Monetization | — | Free |
| Size | 42 MB | 24 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MITSUNORI TERAGAMI](https://appshunter.io/developer/883571123) | [VOG Technology Ltd. Co.](https://appshunter.io/developer/1477174210) |

## What reviewers say

### WKGSIM

[App page](https://appshunter.io/ios/app/wkgsim/id1445976080)

**Features:** macOS Compatibility

**In-app purchases:** none


### VOG

[App page](https://appshunter.io/ios/app/vog-altimeter/id1511161657)

This app provides voice altitude announcements for skydivers, eliminating the need to constantly check visual altimeters. It offers customizable spoken altitudes and automatic on/off functionality for simplicity and safety during jumps.

**Highlights:** Voice altitude announcements, Automatic on/off functionality, Customizable spoken altitudes, Feet or meters setting, Multiple language support, Compact helmet-friendly design

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is WKGSIM free?

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

### Is VOG free?

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

### Do WKGSIM or VOG have ads?

Neither WKGSIM nor VOG shows ads.

### Which is updated more often, WKGSIM or VOG?

WKGSIM ships an update every 7 months, and VOG weekly. Most recently, WKGSIM was updated on November 2, 2026 and VOG on November 3, 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.*