# AV Flash Sync vs Kargo

The clearest difference is review sentiment: Kargo at 100% against AV Flash Sync's 0%. Kargo also leads on update cadence (every 4 days vs every 19 months). AV Flash Sync's advantage is iOS requirement (12.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. AV Flash Sync sells 1 one-off in-app purchase and Kargo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

AV Flash Sync ships an update every 19 months, Kargo every 4 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AV Flash Sync | Kargo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/av-flash-sync/id1207980707/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 1 MB | 34 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [náhodný](https://appshunter.io/developer/431797361) | [ALEXANDRE JOSEPH PIERRE PAUL](https://appshunter.io/developer/1813388637) |

## What reviewers say

### AV Flash Sync

[App page](https://appshunter.io/ios/app/av-flash-sync/id1207980707)

Enhance your AV media recordings with a one-second tone and red flash. This tool aids in synchronizing audio and video during post-production, streamlining your workflow.

**Highlights:** Add one-second tone, Add red flash, Synchronize audio and video, Post-production tool, Media recording enhancement

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flash Sync Pro | $2.99 | one-time |


### Kargo

[App page](https://appshunter.io/ios/app/kargo-moving-box-inventory/id6775550215)

Easily track the contents of your moving boxes. Add photos, item lists, and destination rooms to quickly find anything you need. Includes a moving checklist and an unpacking mode for a smoother transition.

**Highlights:** Numbered and named boxes, Box photos and item lists, Voice dictation for items, Sort boxes by room, Mark fragile/high-priority boxes, Moving checklist, Unpacking mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kargo Premium | $5.99 | one-time |


## Frequently asked questions

### Is AV Flash Sync free?

AV Flash Sync is free to download, with in-app purchases available.

### Is Kargo free?

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

### Do AV Flash Sync or Kargo have ads?

Neither AV Flash Sync nor Kargo shows ads.

### Which is updated more often, AV Flash Sync or Kargo?

AV Flash Sync ships an update every 19 months, and Kargo every 4 days. Most recently, AV Flash Sync was updated on November 2, 2026 and Kargo on October 31, 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.*