# ID Lock vs HVAC Superheat Calculator

The clearest difference is price: ID Lock at Free against HVAC Superheat Calculator's $4.99. HVAC Superheat Calculator's advantage is in-app purchases (none vs 2). On update cadence, ads, device support and iOS requirement there is nothing between them.

ID Lock is free to download; HVAC Superheat Calculator costs $4.99 up front. ID Lock sells 2 in-app purchases, starting at $3.99 per month. HVAC Superheat Calculator asks for nothing beyond the download.

ID Lock ships an update every 3 weeks, HVAC Superheat Calculator every 5 weeks. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ID Lock | HVAC Superheat Calculator |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.8 (791 ratings)](https://appshunter.io/ios/app/id-lock-secure-data-manager/id285835523/reviews)** | — |
| Number of ratings | **791** | — |
| Positive reviews | 72.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Subscription | — |
| Size | 143 MB | 1 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Software Ops LLC](https://appshunter.io/developer/332253818) | [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858) |

## What reviewers say

### ID Lock

[App page](https://appshunter.io/ios/app/id-lock-secure-data-manager/id285835523)

Securely store and manage your passwords, credit card numbers, and other sensitive information. Enjoy fast setup, advanced encryption, and seamless syncing across all your devices. Try it risk-free with a 30-day free trial of premium features.

**Highlights:** Password storage, Credit card management, Bank account information, 256-bit AES encryption, Keychain security, Cross-device syncing, Secure cloud backup, User-friendly interface

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $3.99 | per month |
| Yearly Subscription | $44.99 | per year |

**What reviewers like**

- 🔒 Secure storage of sensitive information
- 👍 Intuitive and user-friendly interface
- 🚀 Convenient access to important data
- 💡 Useful templates for various personal details

**What reviewers complain about**

- 🐛 Crashes and compatibility issues after updates
- 🔒 Concerns about data security and privacy
- 💰 Frustration over paid subscription model
- 🤔 Limited customization options

**Reported bugs**

- Password not recognized after updates
- Inability to add new entries after subscription change
- Backup and restore functionality not working as expected

**Requested features**

- Ability to import/export data
- More templates for international users
- Syncing across multiple devices
- Customizable categories and fields


### HVAC Superheat Calculator

[App page](https://appshunter.io/ios/app/hvac-superheat-calculator/id6761745516)

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

**In-app purchases:** none


## Frequently asked questions

### Is ID Lock free?

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

### Is HVAC Superheat Calculator free?

HVAC Superheat Calculator costs $4.99, with no in-app purchases.

### Do ID Lock or HVAC Superheat Calculator have ads?

Neither ID Lock nor HVAC Superheat Calculator shows ads.

### Which is updated more often, ID Lock or HVAC Superheat Calculator?

ID Lock ships an update every 3 weeks, and HVAC Superheat Calculator every 5 weeks. Most recently, ID Lock was updated on October 15, 2026 and HVAC Superheat Calculator 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.*