# VulnWatch vs Shindan

The clearest difference is in-app purchases: Shindan at none against VulnWatch's 3. Shindan also leads on ads (none vs shown) and iOS requirement (16.0 vs 18.6). On price, update cadence and device support there is nothing between them.

Both are free to download. VulnWatch sells 3 one-off in-app purchases. Shindan asks for nothing beyond the download.

VulnWatch ships an update every 4 weeks, Shindan every 5 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | VulnWatch | Shindan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 weeks** | Every 5 weeks |
| Size | 5 MB | 47 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Naoyuki Sato](https://appshunter.io/developer/1714035733) | [Shindan.io](https://appshunter.io/developer/1755178914) |

## What reviewers say

### VulnWatch

[App page](https://appshunter.io/ios/app/vulnwatch/id6470704548)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small gift | $4.99 | one-time |
| Medium gift | $9.99 | one-time |
| Large gift | $19.99 | one-time |


### Shindan

[App page](https://appshunter.io/ios/app/shindan/id6505109678)

**In-app purchases:** none


## Frequently asked questions

### Is VulnWatch free?

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

### Is Shindan free?

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

### Do VulnWatch or Shindan have ads?

VulnWatch shows ads; Shindan does not.

### Which is updated more often, VulnWatch or Shindan?

VulnWatch ships an update every 4 weeks, and Shindan every 5 weeks. Most recently, VulnWatch was updated on October 25, 2026 and Shindan on October 24, 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.*