Comparison

Simple Circuit Builder vs mssh

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

Head to head
About

Simple Circuit Builder

This virtual lab offers a hands-on experience for learning about resistors and circuit resistance. Easily build and test series and parallel circuits, measure voltage and current, and understand the impact of component changes in real-time.

Highlights
  • Build circuits with up to eight components
  • Five component types
  • Virtual volt and amp meters
  • Adjustable resistor and voltage values
  • Real-time circuit analysis
  • Demonstrates 'Opens' and 'Shorts'
Features
Read full description

Description This is the BEST app to learn about Resistors and Circuit Resistance (Equivalent Resistance). This virtual lab provides an excellent environment for anyone who is interested in understanding series and parallel resistors, learning how to measure voltages across resistors, current through series and parallel circuits and solving simple circuits. Features - VERY SIMPLE and EASY TO USE, with up to eight component sections. - Component sections can easily be configured from five different types. - VIRTUAL "Hands On" experience using volt and amp meters. - Resistor values can easily be changed with a picker, keypad or using randomize button. - Circuit voltage can easily be changed from 1 to 1000 volts with a picker or a keypad. - The "Basics" screen make this app unique for the simplicity and speed of seeing the effects of "Opens" (resistor component with infinite resistance) and "Shorts" (resistor component with zero resistance). - FREE and NO ADVERTISEMENTS. - The circuit is always "LIVE" and immediately shows voltage, current and circuit resistance with any changes made to the circuit.

About

mssh

Features
Read full description

mSSH is a professional SSH and SFTP client for iPhone, iPad, and Mac. Connect to your remote servers with password or key-based authentication (Ed25519, ECDSA, RSA). - Six terminal themes, saved command snippets, and cross-device iCloud sync - Everything you need to manage servers on the go. Cross-Device Sync — Your connections, SSH keys, snippets, and settings sync across all your devices via iCloud. Private SSH keys sync optionally through end-to-end encrypted iCloud Keychain. On Mac, your existing ~/.ssh folder is imported automatically. Terminal Themes & Fonts — Choose from six built-in themes: Default, Solarized Dark, Monokai, Nord, Dracula, and Tokyo Night. Pick your preferred font family and size (9–24pt), cursor style (block, bar, or underline), and blink behavior. Changes apply instantly. Snippets — Save commands you run often (deploy scripts, log tailing, service restarts) and send them to any active session with one tap. Access snippets from the terminal toolbar or the iOS keyboard accessory bar. Connection Organization — Star favorites to pin them at the top. Group connections by environment (Production, Staging, Personal). Add color tags for visual scanning. Search across all connections by name, host, username, or group. SSH Terminal — Full shell access with xterm-256color support. Manage multiple sessions with tabs. Split terminal view on iPad. Custom keyboard accessory bar with Esc, Tab, Ctrl, arrow keys, and quick-access snippets. format. Generate Ed25519 keys directly in the app. Import keys by pasting PEM text or from your Mac's ~/.ssh folder. All private keys stored in the Keychain with hardware encryption. SFTP File Browser — Browse remote filesystems, upload and download files, and manage directories with an intuitive touch interface. Security — Face ID and Touch ID for app-level protection. All credentials in the Keychain, hardware-encrypted. Host key verification via Trust On First Use (TOFU) with SHA-256 fingerprints. No accounts, no telemetry, no ads. Mac Support — Native macOS app with sidebar navigation. Import your ~/.ssh keys and config with one click. Sync connections from iPhone via iCloud. Open Source — mSSH is open source at github.com/nirasnet/mssh. Built with SwiftTerm and Citadel.

Screenshots

Simple Circuit Builder4 screens
mssh4 screens

Verdict

The call

The clearest difference is in-app purchases: Simple Circuit Builder at none against mssh's 3. Simple Circuit Builder also leads on iOS requirement (14.0 vs 18.0). mssh's advantage is update cadence (every 9 days vs every 3 weeks). On price, ads 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

Both are free to download. mssh sells 3 one-off in-app purchases. Simple Circuit Builder asks for nothing beyond the download.

UpkeepUpdate frequency

Simple Circuit Builder ships an update every 3 weeks, mssh every 9 days. The most recent releases landed on June 4, 2026 and September 9, 2026 respectively.

Scorecard3 real differences · 7 level
Simple Circuit Builder versus mssh: the parameters behind the verdict, then further details
ParameterSimple Circuit Buildermssh
PriceFreeFree
Rating4.0 (28 ratings) — better—
Positive reviews52.6% of reviews—
Number of ratings28 — better—
Update frequencyEvery 3 weeksEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better18.0
Further details — not scored
Size14 MB10 MB
Age rating4+4+
DeveloperDavid WhiteJadesada Ponyium

In-app purchases

None

Simple Circuit Builder

No in-app purchases

3 purchases

mssh

One-time3
  • Coffee Tip$0.99
  • Lunch Tip$4.99
  • Dinner Tip$9.99

Questions

Is Simple Circuit Builder free?
Simple Circuit Builder is free to download, with no in-app purchases.
Is mssh free?
mssh is free to download, with in-app purchases available.
Do Simple Circuit Builder or mssh have ads?
Neither Simple Circuit Builder nor mssh shows ads.
Which is updated more often, Simple Circuit Builder or mssh?
Simple Circuit Builder ships an update every 3 weeks, and mssh every 9 days. Most recently, Simple Circuit Builder was updated on June 4, 2026 and mssh on September 9, 2026.

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