01Converter vs Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
01Converter
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.
- Number system conversion (binary, hex, octal, decimal)
- Unicode conversion
- Shift left function
- Shift right function
- Add 1 function
- Subtract 1 function
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Convert number in binary, hexadecimal, octal, decimal and unicode! Shift left, shift right, add 1 and subtract 1 functions. Simple and straightforward. Optimized keyboard for writing binary, octal, decimal and hexadecimal.
Calc
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.
- High-precision calculations (50+ digits)
- Extensive mathematical functions
- Programmable features
- Complex arithmetic
- Graphing capabilities
- Derivative and integral calculation
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Calc-50 is a high-precision scientific graphing RPN calculator. It carries over 50 digits of accuracy and has a large number of mathematical functions, including trig and hyperbolic functions and their inverses, and math special functions such as gamma, beta, psi, exponential integral, sine, cosine, and log integrals, Bessel functions, and more. It is programmable, with functions that take user functions and find derivatives, integrals, function max/min, and roots. Calc-50 also provides complex arithmetic and elementary functions.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | 01Converter | Calc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 94.4% of reviews — better | 50.0% of reviews |
| Number of ratings | 2 | 3 — better |
| Update frequency | Every 9 months — better | Every 10 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.1 — better | 12.0 |
| Further details — not scored | ||
| Size | 11 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Francesco Burelli | David Smith |
Customer experience
01Converter
Calc
In-app purchases
01Converter
No in-app purchases
Calc
No in-app purchases
