Comparison

MySQL QueryDB SSH Client vs RPN

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

Head to head
About

MySQL QueryDB SSH Client

This mobile client provides a fast and robust way to remotely query MySQL and MariaDB databases. It's optimized for unreliable network connections and handles large datasets efficiently. Features include SSH tunneling, parameterized queries, and iCloud synchronization.

Highlights
  • Remote MySQL/MariaDB querying
  • SSH tunneling and SSL support
  • Optimized for low-quality networks
  • Parameterized query support
  • iCloud synchronization
  • CSV export via iOS extensions
  • Siri Shortcuts integration
Features
Read full description

The fastest and most robust way to execute queries from your mobile device. QueryDB has spent over 15 years helping developers remotely query their MySQL databases on iOS. It's not just a desktop port: it handles flakey cellular network connections and delivering your data wherever you are! • Integrated UI support for parameterized queries • Support for SSH tunneling and MySQL native SSL • Optimized to run queries over low quality network connections. • Does not maintain persistent connections to your database • Automatically windows data requests to prevent data overload when querying large datasets. • Support for MPTCP for seamless network transitions between Wifi and cellular networks (SSH server and routers must also support) • Query oriented workflow. • Run queries with minimal steps. • Run the same queries across different environments (e.g. prod, staging, dev). • Support for Siri Shortcuts for both UI and scripting purposes • Unicode support. • Automatically sets to default database charset. • iCloud support • Easily synchronize servers and queries across all your devices. • CSV export through iOS extensions • Easily export data to Numbers, Files, and other sharing extensions that support CSV. Comprehensive MySQL version support: Versions 4,x, 5.x, 8.x, Amazon Aurora, Google SQL, MariaDB.

About

RPN

This app simulates a vintage programmable calculator from the mid-70s, offering enhanced features beyond the original. It allows users to run existing programs, manage virtual cards, and utilize advanced functions for scientific and engineering tasks.

Highlights
  • Virtual program and data cards
  • Virtual paper tape printer
  • Database-driven card manager
  • Create, label, and organize unlimited cards
  • Share cards via email, AirDrop, Dropbox
  • Editable program listings
  • Enhanced features for more program steps and registers
Features
Read full description

A dream calculator of the mid-70's, priced at $2,500 in today's dollars (2025), right on your iPhone! RPN-67 SD is the iPhone version of RPN-67 Pro, the first complete simulation of Hewlett-Packard's legendary HP-67 programmable calculator for the iPad. Produced from 1976 to 1982, the HP-67 was a huge success among scientists, engineers and other professionals. Thousands of programs were written for it. Now you can run them right on your iPhone, with more ease and faster than ever before. To get you started quickly, run the built-in program cards, or choose from the large number of programs available as free downloads from our website. What users said: “This version permits you to use your virtual HP-67 just as you could the original – hand-held and highly portable. Congratulations to the developer for providing such an excellent and aesthetically pleasing software product." "This was my first scientific calculator in real life. It is great to have the simulator on my iPhone. The special features added make it into a HP-41 or 42S! It comes packaged with some great samples. Am having great fun with it." Features: • Virtual program and data cards • Virtual paper tape printer supports all HP-97 printer modes • Powerful database-driven card manager • Create, label, and organize a virtually unlimited number of cards • Use iTunes to effortlessly save entire card collections on your Mac/PC • Sharing: e-mail, AirDrop, Dropbox, copy, paste, print • Editable listing shows labels, targets of branches, and errors • E-mail listings and let the recipient paste the text right into RPN-67 • Print listings on any AirPrint-compatible printer • Program listing on paper tape shows subroutine nesting • Edit paper tape • E-mail paper tape, or print it via AirPrint • Cut/copy/paste displayed value or program steps • Paste existing HP-67 listings into RPN-67 SD and run them • "Live" display of stack, memory registers, flags • Show and edit program instructions • Fast: 1.5 seconds vs. 6 minutes (program HM-05, determinant of 5x5 matrix) • Low-battery indicator (iPhone charge 10% or less) • Optional high-contrast mode for working in bright ambient light • Compatible with RPN-67 Pro and RPN-97 Pro While RPN-67 SD works like a real HP-67, changing a simple setting will turn the app into a super-charged HP-67: • Up to 999 program steps, 8 subroutine levels, 6 additional flags (F4...F9) • 100 additional registers • 100 additional labels • 100 built-in constants and conversions • More than 150 additional powerful operations and functions Plus: • 15 commands to print and manipulate any range of extended registers • Unrestricted register arithmetic • Exchange x with any register • Complex numbers, hyperbolic functions • Non-volatile memory - stack, registers, program, flags, paper tape • Status indicators for prefix keys (f, g, h, STO, RCL, etc.) • Display showing thousands separators (optional) • Text output on simulated paper tape in 10 colors, even simple plotting • Stack-of-stack: push/pop the entire stack on internal stack (4 levels) • Single-step into subroutines (optional) • Powerful debugging aids, including 10 breakpoints with counters • Keycodes translated to command names while entering or single-stepping a program • Change the duration of the PAUSE command • Compress constants in programs into a single step (reversible) RPN-67 SD comes with more than 130 programs pre-installed, including HP Standard Pac, HP Business Decisions Pac, HP Math Pac I, HP Stat Pac I, and HP Surveying Pac I. The simulator has been verified to correctly run the examples given in HP Civil Engineering Pac I, HP Clinical Lab Pac, HP E.E. Pac I, HP Games Pac I, HP M.E. Pac I, HP Navigation Pac I, as well as large number of programs published in Users' Library Solutions. For more information and free program downloads visit the RPN-67 website: cuveesoft.ch/rpn67

Screenshots

MySQL QueryDB SSH Client4 screens
RPN4 screens

Verdict

The call

The clearest difference is price: RPN at $3.99 against MySQL QueryDB SSH Client's $9.99. RPN also leads on review sentiment (93% vs 70%) and iOS requirement (12.0 vs 15.0). On rating, 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

CostPrice · In-app purchases · Ads · Monetization

MySQL QueryDB SSH Client costs $9.99 and RPN $3.99 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 — 4.5 for MySQL QueryDB SSH Client against 4.6 for RPN. Both are backed by a comparable volume of ratings — 15 and 17 respectively. Written reviews are what separate them: 70% of MySQL QueryDB SSH Client's written reviews are positive against 93% of RPN's.

UpkeepUpdate frequency

MySQL QueryDB SSH Client ships an update every 2 months, RPN every 3 months. The most recent releases landed on August 15, 2026 and September 21, 2026 respectively.

Scorecard3 real differences · 7 level
MySQL QueryDB SSH Client versus RPN: the parameters behind the verdict, then further details
ParameterMySQL QueryDB SSH ClientRPN
Price$9.99$3.99 — better
Rating4.5 (15 ratings)4.6 (17 ratings) — better
Positive reviews70.0% of reviews92.9% of reviews — better
Number of ratings1517 — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size25 MB63 MB
Age rating4+4+
DeveloperExcelsis ConsultingCuVee Software

Customer experience

MySQL QueryDB SSH Client

All ratings15 ratings
Positive86.7%
Neutral0.0%
Negative13.3%
Written reviews20 reviews
Positive70.0%
Neutral15.0%
Negative15.0%

RPN

All ratings17 ratings
Positive94.1%
Neutral0.0%
Negative5.9%
Written reviews14 reviews
Positive92.9%
Neutral0.0%
Negative7.1%

In-app purchases

None

MySQL QueryDB SSH Client

No in-app purchases

None

RPN

No in-app purchases

Questions

Is MySQL QueryDB SSH Client free?
MySQL QueryDB SSH Client costs $9.99, with no in-app purchases.
Is RPN free?
RPN costs $3.99, with no in-app purchases.
Which has better reviews, MySQL QueryDB SSH Client or RPN?
RPN is rated higher. MySQL QueryDB SSH Client averages 4.5 out of 5 from 15 ratings, while RPN averages 4.6 from 17 ratings.
Do MySQL QueryDB SSH Client or RPN have ads?
Neither MySQL QueryDB SSH Client nor RPN shows ads.
Which is updated more often, MySQL QueryDB SSH Client or RPN?
MySQL QueryDB SSH Client ships an update every 2 months, and RPN every 3 months. Most recently, MySQL QueryDB SSH Client was updated on August 15, 2026 and RPN on September 21, 2026.

Other comparisons