# HVAC Service vs SEO_optimize

The clearest difference is in-app purchases: HVAC Service at none against SEO_optimize's 1. HVAC Service also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 3 months). On price and device support there is nothing between them.

Both are free to download. SEO_optimize sells 1 one-off in-app purchase. HVAC Service asks for nothing beyond the download.

HVAC Service ships an update every 2 weeks, SEO_optimize every 3 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | HVAC Service | SEO_optimize |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Size | 34 MB | 12 MB |
| Requires iOS | **15.1** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Connor Darenko](https://appshunter.io/developer/1859899232) | [Terje Molle](https://appshunter.io/developer/1841713886) |

## What reviewers say

### HVAC Service

[App page](https://appshunter.io/ios/app/hvac-service/id6756292206)

**Features:** macOS Compatibility

**In-app purchases:** none


### SEO_optimize

[App page](https://appshunter.io/ios/app/seo-optimize/id6757407386)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SEO Auditor Supporter | $5.99 | one-time |


## Frequently asked questions

### Is HVAC Service free?

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

### Is SEO_optimize free?

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

### Do HVAC Service or SEO_optimize have ads?

SEO_optimize shows ads; HVAC Service does not.

### Which is updated more often, HVAC Service or SEO_optimize?

HVAC Service ships an update every 2 weeks, and SEO_optimize every 3 months. Most recently, HVAC Service was updated on October 30, 2026 and SEO_optimize 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.*