Notes Vault vs HVAC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Notes Vault
Securely store and organize your personal notes in a private vault. This application offers a straightforward interface for easy note-taking and quick retrieval.
- Secure note vault
- Easy note storage
- Quick search functionality
- User-friendly interface
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Vault for your Notes. - Secure vault for your eyes and memory only. - Store and search notes easily - Quick search - Easiest to use Notes App on the market
HVAC
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.
- Scan HVAC equipment nameplates
- Organize equipment records
- Access refrigerant P-T charts
- Find available equipment manuals
- Offline refrigerant data
- Manual data entry option
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Scan HVAC equipment nameplates, save model and serial numbers, organize service records, and access refrigerant P-T charts—all in one practical field tool. HVAC: Nameplate Scanner is designed for HVAC technicians, service contractors, property managers, and equipment owners who need a convenient way to capture equipment details and keep useful references close at hand. SCAN HVAC EQUIPMENT NAMEPLATES Capture equipment information using your iPhone camera or an existing photo. • Scan equipment nameplates and data plates • Recognize manufacturer and model information • Capture serial numbers and available label details • Review and correct recognized information • Enter equipment details manually when needed Save important information without repeatedly typing details from equipment labels. ORGANIZE EQUIPMENT RECORDS Keep essential information for your HVAC units in one place. • Save equipment names, brands, and models • Store serial numbers and installation locations • Add service notes and equipment details • Review saved records during future visits Whether you're maintaining a single unit or organizing multiple pieces of equipment, your saved records provide useful context for the next service visit. REFRIGERANT P-T CHARTS Access built-in refrigerant pressure-temperature references for supported refrigerants. • Look up saturation temperatures and pressures • Select appropriate phase values • Switch between available measurement units • Review supported reference ranges • Share calculation results Included refrigerant P-T tables are stored on your device and remain accessible offline. FIND AVAILABLE EQUIPMENT MANUALS Search the included directory for available public equipment manuals using recognized model information. • View available matching documents • Open original manufacturer reference files • Compare model details before using a manual Manual availability depends on the manufacturer, model, region, and document coverage. The current directory includes selected Daikin India documents. An internet connection is required to open original online manuals. A PRACTICAL WORKFLOW FOR HVAC FIELD WORK Capture a nameplate, verify the recognized details, check available technical references, and save the equipment record for future service visits. The app brings common equipment documentation tasks into a focused workspace designed for everyday HVAC work. IMPORTANT INFORMATION Always verify scanned information against the original equipment nameplate. Recognition accuracy may vary depending on image quality and label condition. Before using any manual, confirm that its model, region, revision, and specifications match the equipment being serviced. Refrigerant pressure-temperature data is provided for general technical reference. Always follow manufacturer instructions, applicable regulations, and established safety procedures. SUBSCRIPTION INFORMATION Subscriptions auto-renew unless canceled. You can manage or cancel your subscription anytime in your Apple Account settings. Privacy Policy: https://appsphereltd.com/pp/6814725045/ Terms of Use: https://appsphereltd.com/tou/6814725045/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Notes Vault | HVAC |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | 4.3 (6 ratings) |
| Number of ratings | 5 | 6 — better |
| Update frequency | Every 2 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 10 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Praxticus Mobile Labs LLC | APPSPHERE LIMITED |
Customer experience
Notes Vault
HVAC
In-app purchases
Notes Vault
No in-app purchases
HVAC
- VIP Membership$9.997 Days
- VIP Membership$39.991 Year
- VIP Membership$59.99









