# Calculator Plus vs guidosimplex

The clearest difference is price: guidosimplex at Free against Calculator Plus's $3.99. guidosimplex also leads on update cadence (every 4 days vs every 5 weeks) and iOS requirement (13.0 vs 15). On ads, in-app purchases and device support there is nothing between them.

guidosimplex is free to download; Calculator Plus costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calculator Plus ships an update every 5 weeks, guidosimplex every 4 days. The most recent releases landed on September 24, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Calculator Plus | guidosimplex |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.9 (695 ratings)](https://appshunter.io/ios/app/calculator-plus-pro/id978091416/reviews)** | — |
| Number of ratings | **695** | — |
| Positive reviews | 93.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 67 MB | 30 MB |
| Requires iOS | 15 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DigitAlchemy LLC](https://appshunter.io/developer/376971628) | [Changzhou Xinder-Tech Electronics Co., Ltd](https://appshunter.io/developer/1402533068) |

## What reviewers say

### Calculator Plus

[App page](https://appshunter.io/ios/app/calculator-plus-pro/id978091416)

This app simplifies everyday math with a clean interface and a history of all your calculations. Easily handle basic operations, percentages, and more, with the ability to review past entries for quick reference. It's designed for efficient problem-solving on the go.

**Highlights:** Clear, readable calculation display, Basic arithmetic and percentages, Backspace for error correction, Memory buttons and calculation history, Light and dark themes, Advanced functions (squaring, square root, pi)

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 👍 Large, clear numbers
- 👍 Intuitive interface
- 👍 Reliable performance
- 👍 Convenient features (e.g. history, memory)

**What reviewers complain about**

- 🐛 Occasional clicking sound issue
- 🔋 Potential battery drain

**Reported bugs**

- Clicking sound not removable
- Compatibility issues on older devices

**Requested features**

- Dark mode option
- Algebraic order of operations
- Customizable color schemes


### guidosimplex

[App page](https://appshunter.io/ios/app/guidosimplex/id6739729334)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Plus free?

Calculator Plus costs $3.99, with no in-app purchases.

### Is guidosimplex free?

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

### Do Calculator Plus or guidosimplex have ads?

Neither Calculator Plus nor guidosimplex shows ads.

### Which is updated more often, Calculator Plus or guidosimplex?

Calculator Plus ships an update every 5 weeks, and guidosimplex every 4 days. Most recently, Calculator Plus was updated on September 24, 2026 and guidosimplex on September 16, 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.*