Comparison

ExView® W vs DB50X

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ExView® W

Stream and record data from compatible wireless meters to your iPhone or iPad. Adjust sample rates, export data to Excel, and capture images of your measurement area. Store thousands of readings for later download and analysis.

Highlights
  • Real-time data streaming
  • Remote viewing
  • Adjustable sample rate
  • Excel data export
  • Data file sharing
  • Measurement area snapshots
  • Large reading storage
Read full description

Compatible with Extech's MO55W and MM750W W-Series wireless meters, the ExView® W-Series App allows the user to: • Stream data to iPhone or iPad internal memory, with real-time remote viewing • Adjust sample rate • Export data in Excel® format • Share data files directly from application • Take snapshots of the measurement area with the connected iPhone or iPad camera • Store over 15k readings with the DAT12 wireless datalogging module, for download to Phone or Tablet, with programmable datalogger file size

About

DB50X

This scientific calculator offers high-precision computations with arbitrary precision for numbers. It supports advanced functions like complex numbers, matrices, symbolic calculations, and graphing, with a user-friendly interface and extensive built-in help.

Highlights
  • Arbitrary precision calculations
  • RPN and algebraic operations
  • Complex numbers, vectors, matrices
  • Symbolic and numerical solving
  • Graphing and plotting
  • Engineering units and constants
  • Unicode text support
Features
Read full description

DB50X is a new high-precision scientific calculator inspired by the legendary HP50G 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 HP50G, 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. It integrates a library of equations and constants covering mathematics, physics or chemistry. Using modern technologies, DB50X goes well beyond the original HP50G in many ways: - It is significantly faster, uses less memory, and features a higher-resolution 240x400 pixels graphical color 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 colour patterns - 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. - Over 700K of memory is available for RPL programs. - Access to iCloud to save your program and edit them from your Mac. DB508X will run many user RPL programs designed for the HP48, HP49 or HP50 directly as is. However, since it is not an emulator, it will not run any HP binary object, and notably will not run HP50G games or anything involving system RPL. This is an early-access release. Please consult https://github.com/c3d/db48x/blob/stable/doc/5-Unimplemented.md for a list of commands that are not yet implemented. DB50X is part of a family of related calculators that include the black-and-white DB48X and the entry-level DB40X.

Screenshots

ExView® W4 screens
DB50X4 screens

Verdict

The call

The clearest difference is price: ExView® W at Free against DB50X's $9.99. ExView® W also leads on iOS requirement (8.0 vs 14.0). DB50X's advantage is ratings volume (9 vs 1). On rating, 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

CostPrice · In-app purchases · Ads · Monetization

ExView® W is free to download; DB50X costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for ExView® W against 5.0 for DB50X. That said, the two scores are not equally well evidenced: DB50X has 9 ratings behind it against 1, so its average is the more settled of the two.

Scorecard4 real differences · 6 level
ExView® W versus DB50X: the parameters behind the verdict, then further details
ParameterExView® WDB50X
PriceFree — better$9.99
Rating5.0 (1 ratings)5.0 (9 ratings)
Positive reviews—100.0% of reviews
Number of ratings19 — better
Update frequency—Every 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better14.0
Further details — not scored
Size16 MB7 MB
Age rating4+4+
DeveloperExtech InstrumentsChristophe de Dinechin

In-app purchases

None

ExView® W

No in-app purchases

None

DB50X

No in-app purchases

Questions

Is ExView® W free?
ExView® W is free to download, with no in-app purchases.
Is DB50X free?
DB50X costs $9.99, with no in-app purchases.
Which has better reviews, ExView® W or DB50X?
ExView® W and DB50X are both rated 5.0 out of 5 on the App Store, from 1 and 9 ratings respectively.
Do ExView® W or DB50X have ads?
Neither ExView® W nor DB50X shows ads.

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