# CAYIN Signage Assistant vs V

The clearest difference is in-app purchases: CAYIN Signage Assistant at none against V's 5. CAYIN Signage Assistant also leads on iOS requirement (14.0 vs 16.0). V's advantage is update cadence (every 9 days vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. V sells 5 in-app purchases, starting at $1.99 per month. CAYIN Signage Assistant asks for nothing beyond the download.

CAYIN Signage Assistant ships an update every 9 months, V every 9 days. The most recent releases landed on October 27, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | CAYIN Signage Assistant | V |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 9 days** |
| Size | 29 MB | 4 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [CAYIN鎧應科技](https://appshunter.io/developer/1537732730) | [Thanh Nam Nguyen](https://appshunter.io/developer/6810293267) |

## What reviewers say

### CAYIN Signage Assistant

[App page](https://appshunter.io/ios/app/cayin-signage-assistant/id6443804283)

**Features:** macOS Compatibility

**In-app purchases:** none


### V

[App page](https://appshunter.io/ios/app/v-sync/id6810293265)

**Features:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| V-Sync Pro — Monthly | $1.99 | per month |
| V-Sync Pro — 3 Months | $3.99 | per 3 months |
| V-Sync Pro — 6 Months | $5.99 | per 6 months |
| V-Sync Pro — Yearly | $9.99 | per year |
| V-Sync Photo Pro — Yearly | $39.99 | per year |


## Frequently asked questions

### Is CAYIN Signage Assistant free?

CAYIN Signage Assistant is free to download, with no in-app purchases.

### Is V free?

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

### Do CAYIN Signage Assistant or V have ads?

Neither CAYIN Signage Assistant nor V shows ads.

### Which is updated more often, CAYIN Signage Assistant or V?

CAYIN Signage Assistant ships an update every 9 months, and V every 9 days. Most recently, CAYIN Signage Assistant was updated on October 27, 2026 and V on October 26, 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.*