# Calculator Pro vs Simpleum Safe Encryption

The clearest difference is price: Simpleum Safe Encryption at Free against Calculator Pro's $6.99. Simpleum Safe Encryption also leads on update cadence (every 11 days vs every 3 months) and rating (3.9 vs 3.6). Calculator Pro's advantage is in-app purchases (none vs 6) and review sentiment (50% vs 20%). On ratings volume, ads and device support there is nothing between them.

Simpleum Safe Encryption is free to download; Calculator Pro costs $6.99 up front. Simpleum Safe Encryption sells 5 in-app purchases, starting at $0.99 per month. Calculator Pro asks for nothing beyond the download.

Simpleum Safe Encryption holds the better App Store score, 3.9 against 3.6. Both are backed by a comparable volume of ratings — 5 and 14 respectively. Written reviews complicate that: 50% of Calculator Pro's written reviews are positive against 20% of Simpleum Safe Encryption's, so the app with the better star average is not the one people write more warmly about.

Calculator Pro ships an update every 3 months, Simpleum Safe Encryption every 11 days. Both last shipped on October 9, 2026.

## The numbers

| Metric | Calculator Pro | Simpleum Safe Encryption |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [3.6 (5 ratings)](https://appshunter.io/ios/app/calculator-pro-simple-app/id708077489/reviews) | **[3.9 (14 ratings)](https://appshunter.io/ios/app/simpleum-safe-encryption/id1547804304/reviews)** |
| Number of ratings | 5 | **14** |
| Positive reviews | **50.0% of reviews** | 20.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 11 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 25 MB | 185 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [woodsmall inc.](https://appshunter.io/developer/708077492) | [Simpleum Media GmbH](https://appshunter.io/developer/1081798041) |

## What reviewers say

### Calculator Pro

[App page](https://appshunter.io/ios/app/calculator-pro-simple-app/id708077489)

This app offers a stylish and functional calculator with advanced features like percent, constant, exponential, and compound interest calculations. Customize themes and decimal rounding for a personalized experience.

**Highlights:** Percent calculations, Constant calculations, Exponential calculations, Compound interest calculations, Customizable themes, Customizable display, Decimal rounding settings

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

**In-app purchases:** none


### Simpleum Safe Encryption

[App page](https://appshunter.io/ios/app/simpleum-safe-encryption/id1547804304)

Securely store and organize your sensitive documents, photos, and videos with bank-grade encryption. Access your data locally without an internet connection and sync across devices. Offers a free download with in-app purchase options for full functionality.

**Highlights:** AES-256 encryption, Local data storage, Encrypted viewing and editing, Document archiving and organization, Encrypted photo and video capture, Text file creation and editing, Document scanning

**Features:** Family Sharing, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Annualy | $6.99 | per year |
| Annual Subscription | $6.99 | per year |
| Annual Family Subscription | $9.99 | per year |
| One time purchase | $22.99 | one-time |


## Frequently asked questions

### Is Calculator Pro free?

Calculator Pro costs $6.99, with no in-app purchases.

### Is Simpleum Safe Encryption free?

Simpleum Safe Encryption is free to download, with in-app purchases available.

### Which has better reviews, Calculator Pro or Simpleum Safe Encryption?

Simpleum Safe Encryption is rated higher. Calculator Pro averages 3.6 out of 5 from 5 ratings, while Simpleum Safe Encryption averages 3.9 from 14 ratings.

### Do Calculator Pro or Simpleum Safe Encryption have ads?

Neither Calculator Pro nor Simpleum Safe Encryption shows ads.

### Which is updated more often, Calculator Pro or Simpleum Safe Encryption?

Calculator Pro ships an update every 3 months, and Simpleum Safe Encryption every 11 days. Most recently, Calculator Pro was updated on October 9, 2026 and Simpleum Safe Encryption 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.*