# Secret Message vs Calculator+ Secure Vault

The clearest difference is in-app purchases: Secret Message at none against Calculator+ Secure Vault's 4. Secret Message also leads on ads (none vs shown) and iOS requirement (12.0 vs 18.0). Calculator+ Secure Vault's advantage is update cadence (fortnightly vs every 8 months). On price and device support there is nothing between them.

Both are free to download. Calculator+ Secure Vault sells 4 in-app purchases, starting at $5.99 per 3 months. Secret Message asks for nothing beyond the download.

Secret Message ships an update every 8 months, Calculator+ Secure Vault fortnightly. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Secret Message | Calculator+ Secure Vault |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (105 ratings)](https://appshunter.io/ios/app/calculator-plus-secure-vault/id6744875928/reviews)** |
| Number of ratings | — | **105** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 42 MB | 72 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Pramod Tapaniya](https://appshunter.io/developer/1658474335) | [Ahmet Selman Durak](https://appshunter.io/developer/868110029) |

## What reviewers say

### Secret Message

[App page](https://appshunter.io/ios/app/secret-message-hide-message/id1669919031)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Secret Message free?

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

### Is Calculator+ Secure Vault free?

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

### Do Secret Message or Calculator+ Secure Vault have ads?

Calculator+ Secure Vault shows ads; Secret Message does not.

### Which is updated more often, Secret Message or Calculator+ Secure Vault?

Secret Message ships an update every 8 months, and Calculator+ Secure Vault fortnightly. Most recently, Secret Message was updated on October 10, 2026 and Calculator+ Secure Vault on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*