# Conversion Calculator Plus vs OneCalc+ All

The clearest difference is price: Conversion Calculator Plus at Free against OneCalc+ All's $3.99. Conversion Calculator Plus also leads on update cadence (every 2 days vs every 3 months) and ratings volume (15K vs 522). OneCalc+ All's advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating, review sentiment and device support there is nothing between them.

Conversion Calculator Plus is free to download; OneCalc+ All costs $3.99 up front. Conversion Calculator Plus sells 1 in-app purchase, starting at $9.99 per year. OneCalc+ All asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Conversion Calculator Plus against 4.7 for OneCalc+ All. That said, the two scores are not equally well evidenced: Conversion Calculator Plus has 15K ratings behind it against 522, so its average is the more settled of the two. Written reviews are what separate them: 70% of Conversion Calculator Plus's written reviews are positive against 75% of OneCalc+ All's.

Conversion Calculator Plus ships an update every 2 days, OneCalc+ All every 3 months. The most recent releases landed on November 4, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Conversion Calculator Plus | OneCalc+ All |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.7 (15K ratings)](https://appshunter.io/ios/app/conversion-calculator-plus/id1113920724/reviews)** | [4.7 (522 ratings)](https://appshunter.io/ios/app/onecalc-plus-all-in-one-calculator/id1324977953/reviews) |
| Number of ratings | **15K** | 522 |
| Positive reviews | 69.5% of reviews | **74.8% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 3 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 59 MB | 3 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Adysseus](https://appshunter.io/developer/447444997) | [tasser gyati](https://appshunter.io/developer/1324926550) |

## What reviewers say

### Conversion Calculator Plus

[App page](https://appshunter.io/ios/app/conversion-calculator-plus/id1113920724)

This app is a versatile unit and currency converter with a user-friendly interface. It supports a wide range of conversion categories, including real-world and crypto currencies, with automatic exchange rate updates. Customize your experience with design options, dark mode, and adjustable home screen layouts.

**Highlights:** Unit and currency conversion, Supports 160+ currencies (real & crypto), Automatic currency exchange rate updates, Simple or carousel design options, Dark Mode support, Customizable home screen layout, Split screen mode on iPad

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads For One Year | $9.99 | per year |

**What reviewers like**

- 🚀 Great app
- 👍 Easy to use
- 🚀 Comprehensive conversions
- 👍 Intuitive interface
- 🚀 Useful tool

**What reviewers complain about**

- 🐛 Consent required for tracking
- 🐛 Update problems
- 🐛 Currency not updating
- 🔒 Forced to allow tracking
- 🔒 Forced to subscribe or view ads

**Reported bugs**

- Currency conversion not working
- App gets stuck on consent page
- Unable to get past ads/subscription page

**Requested features**

- Add running pace conversions
- Add shoe size converter
- Provide paid ad-free version


### OneCalc+ All

[App page](https://appshunter.io/ios/app/onecalc-plus-all-in-one-calculator/id1324977953)

This premium calculator app offers over 40 tools for finance, everyday math, health, construction, and unit conversions. It includes standard, scientific, financial, and specialized calculators, all without ads.

**Highlights:** Over 40 calculators and unit converters, Standard and scientific calculator modes, Financial calculators (interest, loans), Unit and currency converter, Health (BMI, calorie) calculators, Construction estimation tools, Fraction and percentage calculations

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Comprehensive features
- 👍 Easy to use
- 🔒 No ads or tracking
- 💡 Useful unit conversions
- 🚀 Smooth performance

**What reviewers complain about**

- 🐛 Ads still appear despite paid version
- 👎 Underlined buttons are distracting
- 🐛 Currency converter not up-to-date
- 👎 Lack of customization options
- 🐛 Calculation errors in complex operations

**Reported bugs**

- History not clearing properly
- Paid version still showing ads
- Keyboard not working on Mac devices

**Requested features**

- Add more themes and color options
- Implement a swap button for currency converter
- Allow manual ordering of favorites list
- Add a widget for quick access
- Include time calculation functionality


## Frequently asked questions

### Is Conversion Calculator Plus free?

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

### Is OneCalc+ All free?

OneCalc+ All costs $3.99, with no in-app purchases.

### Which has better reviews, Conversion Calculator Plus or OneCalc+ All?

Conversion Calculator Plus is rated higher. Conversion Calculator Plus averages 4.7 out of 5 from 15K ratings, while OneCalc+ All averages 4.7 from 522 ratings.

### Do Conversion Calculator Plus or OneCalc+ All have ads?

Conversion Calculator Plus shows ads; OneCalc+ All does not.

### Which is updated more often, Conversion Calculator Plus or OneCalc+ All?

Conversion Calculator Plus ships an update every 2 days, and OneCalc+ All every 3 months. Most recently, Conversion Calculator Plus was updated on November 4, 2026 and OneCalc+ All on November 2, 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.*