# PlugGuide vs Hardtack

The clearest difference is in-app purchases: PlugGuide at none against Hardtack's 1. PlugGuide also leads on iOS requirement (8.0 vs 15.0). Hardtack's advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Hardtack sells 1 one-off in-app purchase. PlugGuide asks for nothing beyond the download.

PlugGuide ships an update every 2 months, Hardtack weekly. The most recent releases landed on November 2, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PlugGuide | Hardtack |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 8 MB | 44 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pluggit GmbH](https://appshunter.io/developer/698715683) | [Aurore Troubat](https://appshunter.io/developer/1889179962) |

## What reviewers say

### PlugGuide

[App page](https://appshunter.io/ios/app/plugguide/id1384963687)

This app provides detailed information on central, decentralized, and unit-based ventilation systems. It offers tailored content for architects, installers, planners, property managers, owners, tenants, and wholesalers.

**Highlights:** Central ventilation systems, Decentralized ventilation systems, Unit-based ventilation systems, Tailored information for professionals, Information for homeowners and tenants

**Features:** macOS Compatibility

**In-app purchases:** none


### Hardtack

[App page](https://appshunter.io/ios/app/hardtack-pantry-inventory/id6785540095)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hardtack Pro | $17.99 | one-time |


## Frequently asked questions

### Is PlugGuide free?

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

### Is Hardtack free?

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

### Do PlugGuide or Hardtack have ads?

Neither PlugGuide nor Hardtack shows ads.

### Which is updated more often, PlugGuide or Hardtack?

PlugGuide ships an update every 2 months, and Hardtack weekly. Most recently, PlugGuide was updated on November 2, 2026 and Hardtack on October 25, 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.*