# Whois Master vs SentryPing

The clearest difference is iOS requirement: Whois Master at 15.6 against SentryPing's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Whois Master | SentryPing |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Paid | — |
| Size | 5 MB | 6 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Emre Keles](https://appshunter.io/developer/1780421225) | [Gregory Manley](https://appshunter.io/developer/1650623300) |

## What reviewers say

### Whois Master

[App page](https://appshunter.io/ios/app/whois-master/id6738364976)

This utility app allows users to perform comprehensive web lookups. It provides access to domain information, DNS records, SSL certificate details, and IP address tracking. It's designed to be a fast, reliable, and user-friendly tool for exploring essential web data.

**Highlights:** Domain lookups, DNS record access, SSL certificate details, IP address tracking, User-friendly interface

**Features:** Vision Pro support

**In-app purchases:** none


### SentryPing

[App page](https://appshunter.io/ios/app/sentryping/id6787255985)

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

**In-app purchases:** none


## Frequently asked questions

### Is Whois Master free?

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

### Is SentryPing free?

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

### Do Whois Master or SentryPing have ads?

Neither Whois Master nor SentryPing shows ads.

### Which is updated more often, Whois Master or SentryPing?

Whois Master ships an update every 2 weeks, and SentryPing every 2 weeks. Most recently, Whois Master was updated on October 6, 2026 and SentryPing on October 9, 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.*