# CalculateRetro vs Paribus Calculator

The clearest difference is price: Paribus Calculator at Free against CalculateRetro's $1.99. Paribus Calculator also leads on iOS requirement (13.4 vs 26.0). CalculateRetro's advantage is rating (4.5 vs 3.0) and in-app purchases (none vs 2). On review sentiment, ads, monetization model and device support there is nothing between them.

Paribus Calculator is free to download; CalculateRetro costs $1.99 up front. Paribus Calculator sells 2 one-off in-app purchases. CalculateRetro asks for nothing beyond the download.

CalculateRetro holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: CalculateRetro has 15 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 82% and 82% positive.

CalculateRetro ships an update every 3 months, Paribus Calculator every 9 months. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | CalculateRetro | Paribus Calculator |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.5 (15 ratings)](https://appshunter.io/ios/app/calculateretro/id428851944/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/paribus-calculator/id780896618/reviews) |
| Number of ratings | **15** | 2 |
| Positive reviews | **82.4% of reviews** | 81.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | Free | Free |
| Size | 16 MB | 3 MB |
| Requires iOS | 26.0 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hannes Sverrisson](https://appshunter.io/developer/428851947) | [Adam Solesby](https://appshunter.io/developer/780896621) |

## What reviewers say

### CalculateRetro

[App page](https://appshunter.io/ios/app/calculateretro/id428851944)

This app allows users to track all their calculations with features like a backspace key, history printing, and PDF export. It supports Apple Watch, dark mode, and customization of display and fonts. Calculations can be shared via email or saved for later access.

**Highlights:** Apple Watch calculator, Today View Extension, Printable/emailable calculation history, Backspace key for corrections, Customizable display and fonts, Dark mode support, Copy/paste functionality

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

**In-app purchases:** none


### Paribus Calculator

[App page](https://appshunter.io/ios/app/paribus-calculator/id780896618)

This app combines the functionality of a calculator and a spreadsheet, allowing users to perform complex calculations and model scenarios on their mobile devices. It offers features like goal seeking, version comparison, and easy sharing of results.

**Highlights:** Streamlined pocket spreadsheet, Goal seeking with value dial, Compare alternate calculation versions, Natural language and quick entry keyboard, Share results via email and AirDrop, Built-in templates library

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Paribus PRO Year | $1.99 | one-time |
| Upgrade to Paribus PRO | $4.99 | one-time |


## Frequently asked questions

### Is CalculateRetro free?

CalculateRetro costs $1.99, with no in-app purchases.

### Is Paribus Calculator free?

Paribus Calculator is free to download, with in-app purchases available.

### Which has better reviews, CalculateRetro or Paribus Calculator?

CalculateRetro is rated higher. CalculateRetro averages 4.5 out of 5 from 15 ratings, while Paribus Calculator averages 3.0 from 2 ratings.

### Do CalculateRetro or Paribus Calculator have ads?

Neither CalculateRetro nor Paribus Calculator shows ads.

### Which is updated more often, CalculateRetro or Paribus Calculator?

CalculateRetro ships an update every 3 months, and Paribus Calculator every 9 months. Most recently, CalculateRetro was updated on November 6, 2026 and Paribus Calculator on November 1, 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.*