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DB48X icon
Productivity

DB48X

by Christophe de Dinechin
Rating4.7(3)
Price$4.99
Updated1mo ago
Released1y ago
Latest rank
#73
Top Paid · Productivity
Rank change
↓ 12
vs last refresh
Rank history
Charting in:US·Top Paid#73↓12

Screenshots

DB48X screenshot 1DB48X screenshot 2DB48X screenshot 3

Estimates

low confidence
Downloads / month
24K–244K
Chart-rank signal only
Revenue / month
$85K–$851K
After Apple's 30% cut

ASO analysis

Title5 / 30
DB48X

Short title. You're leaving keyword space on the table.

Description2,363 / 4,000
5 paragraphs · 59% of limit used

Solid length. Make sure the first 252 chars hook the reader.

Top keywords in your description
db48x×6numbers×5hp48×4complex×3functions×3rpl×3run×3system×3units×3user×3adds×2based×2
Keyword opportunities

Used by similar apps in your niche, but not in your title or description. Adding these (where genuinely relevant) can broaden your search reach.

best6 peerscalculations6 peersstore6 peerstool6 peersadjustable5 peersfeedback5 peersincludes5 peersinformation5 peerspowerful5 peerspro5 peers
Shared niche keywords

Words you and your peers both use. Confirms positioning in this niche.

features10 peerscalculator9 peersmemory6 peerssupport6 peerscalculators5 peerscolor5 peersfunctions5 peersreference5 peersbased4 peersdecimal4 peers

Keyword rankings

iTunes Search · top 200
Keyword tracking starts automatically for apps on the top charts — ranks appear after the next data refresh. Manual tracking for search-only and niche apps coming soon.

About

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.

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