NilnocCalc vs DB48X
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NilnocCalc
A powerful 64-bit calculator with multiple number system displays, trigonometric functions, and customizable button colors. It offers unit conversions, binary float display, and permutation/combination calculations.
- 64-bit calculation engine
- Hex, Octal, Binary displays
- Full trigonometric functions
- Customizable button colors and effects
- Unit conversion constants
- Binary Float display
- Combinations and Permutations
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This fully functioning 64 bit Calculator features 10 registers to save values. Hex, Oct, Bin displays. Full set of Trig functions. Users can customize: The colors of buttons and effects ( border and gradient ) The number of digits displayed to the right of the decimal. When Scientific Notation is used for display. Also contains many standard unit conversion constants. Also includes a Binary Float display . Combinations and Permutation calculations built in.
DB48X
This advanced scientific calculator offers arbitrary precision computations, RPN and algebraic operations, and extensive graphing capabilities. It supports complex numbers, matrices, symbolic calculations, and over 1000 built-in functions, inspired by the HP48 series.
- Arbitrary precision computations
- RPN and algebraic operations
- Complex numbers, vectors, and matrices
- Symbolic computations and numerical solving
- Graphing and plotting
- Engineering units and currency conversion
- Built-in hyperlinked help system
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DB48X is a new high-precision scientific calculator inspired by the legendary HP48 series from Hewlett-Packard. It is not an emulator, but a redesign from scratch, which is faster, and delivers never seen before capabilities like computations in arbitrary precision. Like the original HP48, DB48X supports an unlimited stack, RPN and algebraic operations, complex numbers, based numbers, vectors, matrices, text, symbolic computations, numerical solving and integration, graphing and plotting, statistics, engineering units, and well over 1000 built-in functions. DB48X adds several HP50G capabilities, including a library of equations and constants covering mathematics, physics or chemistry. Using modern technologies, DB48X goes well beyond the original HP48 in many ways: - It is significantly faster, uses less memory, and features a higher-resolution 240x400 pixels graphical display. - Integer and decimal values can have an arbitrarily large number of digits, so you can compute log(pi) with 200 digits in a few keystrokes. - The six function keys feature up to three function per key, giving quick access to up to 18 related functions at a time. - Complex numbers can mix and match polar and rectangular form. - Symbolic operations extend to complex numbers, vectors and matrices. - Based numbers can be in any base from 2 to 36, and support any number of bits, making it easy to emulate a 23-bit or 512-bit processor. - Text is represented using Unicode instead of the proprietary HP encoding, facilitating data exchange with the rest of the world. - Multiple graphs can be distinguished using bitmap patterns (DB50X adds the ability to use colors) - Engineering units include all the modern evolutions of the SI system, and can be configured by the user, e.g. to integrate currency units with the exchange rate du jour. Converting between USD/hour and EUR/day has never been so easy! - A built-in hyperlinked help system documents functions simply by holding the corresponding key, and combine a quick start guide, a user manual and a reference manual. DB48X will run many user RPL programs as is. However, since it is not an emulator, it will not run any HP binary object, and notably will not run HP48 games or anything involving system RPL. DB48X is part of a family of compatible RPL calculators that include the free DB40X and the color DB50X.
Screenshots
Verdict
The clearest difference is price: NilnocCalc at Free against DB48X's $4.99. NilnocCalc also leads on rating (5.0 vs 4.8) and iOS requirement (12.0 vs 14.0). DB48X's advantage is update cadence (every 3 weeks vs every 3 months) and ratings volume (4 vs 1). On review sentiment, ads, in-app purchases and device support 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
NilnocCalc is free to download; DB48X costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
NilnocCalc holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
NilnocCalc ships an update every 3 months, DB48X every 3 weeks. The most recent releases landed on June 1, 2026 and September 10, 2026 respectively.
| Parameter | NilnocCalc | DB48X |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 5.0 (1 ratings) — better | 4.8 (4 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 5 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | John Conlin | Christophe de Dinechin |
Customer experience
NilnocCalc
DB48X
In-app purchases
NilnocCalc
No in-app purchases
DB48X
No in-app purchases









