# Notes Vault vs HVAC

The clearest difference is rating: Notes Vault at 5.0 against HVAC's 4.3. Notes Vault also leads on in-app purchases (none vs 3) and device support (3 vs 1). HVAC's advantage is update cadence (every 11 days vs every 2 months). On price, ratings volume and ads there is nothing between them.

Both are free to download. HVAC sells 3 in-app purchases, starting at $9.99 per 7 days. Notes Vault asks for nothing beyond the download.

Notes Vault holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 5 and 6 respectively.

Notes Vault ships an update every 2 months, HVAC every 11 days. The most recent releases landed on November 4, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Notes Vault | HVAC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/notes-vault/id6502246101/reviews)** | [4.3 (6 ratings)](https://appshunter.io/ios/app/hvac-nameplate-scanner/id6814725045/reviews) |
| Number of ratings | 5 | **6** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 11 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 10 MB | 58 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Praxticus Mobile Labs LLC](https://appshunter.io/developer/1155766939) | [APPSPHERE LIMITED](https://appshunter.io/developer/6785789248) |

## What reviewers say

### Notes Vault

[App page](https://appshunter.io/ios/app/notes-vault/id6502246101)

Securely store and organize your personal notes in a private vault. This application offers a straightforward interface for easy note-taking and quick retrieval.

**Highlights:** Secure note vault, Easy note storage, Quick search functionality, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### HVAC

[App page](https://appshunter.io/ios/app/hvac-nameplate-scanner/id6814725045)

Scan HVAC equipment nameplates to capture model and serial numbers. Organize service records and access refrigerant pressure-temperature charts. Find equipment manuals and streamline your field service workflow.

**Highlights:** Scan HVAC equipment nameplates, Organize equipment records, Access refrigerant P-T charts, Find available equipment manuals, Offline refrigerant data, Manual data entry option

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP Membership | $9.99 | per 7 days |
| VIP Membership | $39.99 | per year |
| VIP Membership | $59.99 | one-time |


## Frequently asked questions

### Is Notes Vault free?

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

### Is HVAC free?

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

### Which has better reviews, Notes Vault or HVAC?

Notes Vault is rated higher. Notes Vault averages 5.0 out of 5 from 5 ratings, while HVAC averages 4.3 from 6 ratings.

### Do Notes Vault or HVAC have ads?

Neither Notes Vault nor HVAC shows ads.

### Which is updated more often, Notes Vault or HVAC?

Notes Vault ships an update every 2 months, and HVAC every 11 days. Most recently, Notes Vault was updated on November 4, 2026 and HVAC on November 6, 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.*