# Converter and Calculator vs Krypton

The clearest difference is monetization model: Converter and Calculator at free against Krypton's paid. Converter and Calculator also leads on update cadence (every 2 weeks vs every 10 months) and ratings volume (268 vs 2). Krypton's advantage is rating (5.0 vs 4.7). On price, ads, in-app purchases and device support there is nothing between them.

Converter and Calculator costs $2.99 and Krypton $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Krypton holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Converter and Calculator has 268 ratings behind it against 2, so its average is the more settled of the two.

Converter and Calculator ships an update every 2 weeks, Krypton every 10 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Converter and Calculator | Krypton |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| Rating | [4.7 (268 ratings)](https://appshunter.io/ios/app/converter-and-calculator/id741771917/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/krypton/id1529946598/reviews)** |
| Number of ratings | **268** | 2 |
| Positive reviews | 90.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 10 months |
| Monetization | **Free** | Paid |
| Size | 9 MB | 110 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Cider Software LLC](https://appshunter.io/developer/465180756) | [Steve Lidie](https://appshunter.io/developer/1869780159) |

## What reviewers say

### Converter and Calculator

[App page](https://appshunter.io/ios/app/converter-and-calculator/id741771917)

This app functions as a unit and currency converter, offering over 500 units across 29 categories. It features a full-screen calculator with memory functions and allows for extensive customization of displayed units and their order.

**Highlights:** Unit and currency conversion, Full-screen calculator, Customizable units and categories, In-line calculations, Convert multiple units simultaneously, Automatic regional formatting

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use interface
- 🚀 Fast and quick conversions
- 💡 Stores last input and units
- 💡 Displays results in all units
- 💡 Highly customizable

**What reviewers complain about**

- 🐛 Currency updates needed daily
- 🐛 Missing imperial gallons
- 🐛 Euro default currency hard to change
- 🐛 USD to MD Peso not an option
- 🐛 Units and numbers lined up wrong

**Reported bugs**

- App not updating calculations daily
- Conversion table setup is off by one line
- No Copy/Paste functionality

**Requested features**

- Support today's widget
- Add Vietnamese language
- Create custom units
- Add a search bar


### Krypton

[App page](https://appshunter.io/ios/app/krypton/id1529946598)

Securely encrypt and protect your personal documents and folders with strong encryption. This app acts like a digital vault, keeping your sensitive files safe from unauthorized access on your devices and cloud storage.

**Highlights:** Strong encryption for documents and folders, Acts as a secure digital vault, Supports various file types (pictures, movies, PDFs, etc.), Cloud synchronization with iCloud Drive and Dropbox, Available on iOS and macOS

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Converter and Calculator free?

Converter and Calculator costs $2.99, with no in-app purchases.

### Is Krypton free?

Krypton costs $2.99, with no in-app purchases.

### Which has better reviews, Converter and Calculator or Krypton?

Krypton is rated higher. Converter and Calculator averages 4.7 out of 5 from 268 ratings, while Krypton averages 5.0 from 2 ratings.

### Do Converter and Calculator or Krypton have ads?

Neither Converter and Calculator nor Krypton shows ads.

### Which is updated more often, Converter and Calculator or Krypton?

Converter and Calculator ships an update every 2 weeks, and Krypton every 10 months. Most recently, Converter and Calculator was updated on November 1, 2026 and Krypton on November 3, 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.*