# Lock Notes vs Calculator+ Secure Vault

The clearest difference is monetization model: Calculator+ Secure Vault at free with in-app purchases against Lock Notes's subscription. Lock Notes's advantage is ads (none vs shown) and review sentiment (73% vs 50%). On price, rating, update cadence and in-app purchases there is nothing between them.

Both are free to download. Lock Notes sells 3 in-app purchases, starting at $14.99 per year and Calculator+ Secure Vault sells 4 in-app purchases, starting at $5.99 per 3 months. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.5 for Lock Notes against 4.5 for Calculator+ Secure Vault. That said, the two scores are not equally well evidenced: Lock Notes has 1.1K ratings behind it against 105, so its average is the more settled of the two. Written reviews are what separate them: 73% of Lock Notes's written reviews are positive against 50% of Calculator+ Secure Vault's.

Lock Notes ships an update every 10 days, Calculator+ Secure Vault fortnightly. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Lock Notes | Calculator+ Secure Vault |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (1.1K ratings)](https://appshunter.io/ios/app/lock-notes-passcode-protect/id1033962570/reviews) | [4.5 (105 ratings)](https://appshunter.io/ios/app/calculator-plus-secure-vault/id6744875928/reviews) |
| Number of ratings | **1.1K** | 105 |
| Positive reviews | **73.3% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Fortnightly |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 8 MB | 72 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [JulyApps Ltd](https://appshunter.io/developer/427694580) | [Ahmet Selman Durak](https://appshunter.io/developer/868110029) |

## What reviewers say

### Lock Notes

[App page](https://appshunter.io/ios/app/lock-notes-passcode-protect/id1033962570)

Securely store and protect your private notes with a passcode or Touch ID. Keep sensitive information like passwords, secrets, and diary entries safe from unauthorized access. Backup and sync notes across devices, customize their appearance, and even add images.

**Highlights:** Passcode and Touch ID protection, Security question recovery, iCloud backup and sync, Customizable font style and size, Insert images into notes, Print and share notes

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Auto Backup | $14.99 | per year |
| Unlimited Notes | $4.99 | one-time |
| Lock Notes Pro | $9.99 | one-time |

**What reviewers like**

- 🔒 Secure notes
- 👍 Easy to use
- 🚀 Convenient
- 🔑 Passcode/biometric protection
- 💾 Cloud backup

**What reviewers complain about**

- 🔒 Limited free notes
- 💰 Paywall for advanced features
- 🐛 Crashes and data loss issues
- 🔍 Lack of search functionality
- 📁 No folder organization

**Reported bugs**

- Notes disappearing after updates
- Inability to access notes after device reset
- Sync issues between devices

**Requested features**

- Advanced formatting options
- Ability to change passcode
- Improved search capabilities
- Folder/organization system
- Better backup and restore options


### Calculator+ Secure Vault

[App page](https://appshunter.io/ios/app/calculator-plus-secure-vault/id6744875928)

Securely store and protect your private photos, videos, notes, and credit card information. This encrypted vault offers features like a screenshot blocker and emergency exit for ultimate privacy and peace of mind.

**Highlights:** Photo & Video Vault, Notes & Credit Cards Storage, Cloud Backup (iCloud/Google Drive), Screenshot Blocker, Emergency Exit, Dynamic Security Screen

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator + 3 Monthly Premium | $5.99 | per 3 months |
| Calculator+ 6 Monthly Premium | $9.99 | per 6 months |
| Calculator+ Annual Premium | $17.99 | per year |
| Calculator+ Lifetime Premium | $39.99 | one-time |


## Frequently asked questions

### Is Lock Notes free?

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

### Is Calculator+ Secure Vault free?

Calculator+ Secure Vault is free to download, with in-app purchases available.

### Which has better reviews, Lock Notes or Calculator+ Secure Vault?

Lock Notes and Calculator+ Secure Vault are both rated 4.5 out of 5 on the App Store, from 1.1K and 105 ratings respectively.

### Do Lock Notes or Calculator+ Secure Vault have ads?

Calculator+ Secure Vault shows ads; Lock Notes does not.

### Which is updated more often, Lock Notes or Calculator+ Secure Vault?

Lock Notes ships an update every 10 days, and Calculator+ Secure Vault fortnightly. Most recently, Lock Notes was updated on October 14, 2026 and Calculator+ Secure Vault on October 12, 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.*