# 01Converter vs Calc

The clearest difference is review sentiment: 01Converter at 94% against Calc's 50%. 01Converter also leads on rating (4.5 vs 3.7) and iOS requirement (8.1 vs 12.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

01Converter holds the better App Store score, 4.5 against 3.7. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews point the same way: 94% of 01Converter's written reviews are positive against 50% of Calc's.

01Converter ships an update every 9 months, Calc every 10 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | 01Converter | Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/01converter/id334626954/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/calc-50/id1193016704/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | **94.4% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 10 months |
| Monetization | Free | Free |
| Size | 11 MB | 38 MB |
| Requires iOS | **8.1** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Francesco Burelli](https://appshunter.io/developer/334626957) | [David Smith](https://appshunter.io/developer/1193016703) |

## What reviewers say

### 01Converter

[App page](https://appshunter.io/ios/app/01converter/id334626954)

This app allows for easy conversion between binary, hexadecimal, octal, and decimal number systems. It also includes functions for bitwise operations like shifting and arithmetic operations such as adding or subtracting one. An optimized keyboard simplifies input for various number bases.

**Highlights:** Number system conversion (binary, hex, octal, decimal), Unicode conversion, Shift left function, Shift right function, Add 1 function, Subtract 1 function

**Features:** macOS Compatibility

**In-app purchases:** none


### Calc

[App page](https://appshunter.io/ios/app/calc-50/id1193016704)

This app offers a high-precision scientific calculator with over 50 digits of accuracy. It supports advanced mathematical functions, complex arithmetic, and programmable features for derivatives, integrals, and root finding.

**Highlights:** High-precision calculations (50+ digits), Extensive mathematical functions, Programmable features, Complex arithmetic, Graphing capabilities, Derivative and integral calculation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 01Converter free?

01Converter is free to download, with no in-app purchases.

### Is Calc free?

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

### Which has better reviews, 01Converter or Calc?

01Converter is rated higher. 01Converter averages 4.5 out of 5 from 2 ratings, while Calc averages 3.7 from 3 ratings.

### Do 01Converter or Calc have ads?

Neither 01Converter nor Calc shows ads.

### Which is updated more often, 01Converter or Calc?

01Converter ships an update every 9 months, and Calc every 10 months. Most recently, 01Converter was updated on October 23, 2026 and Calc on October 26, 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.*