Comparison

ShellMaster vs Interval Ear Training

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

Head to head
About

ShellMaster

Features
Read full description

ShellMaster turns Bash scripting into short, practical sessions you can keep up with every day. Instead of reading long docs and losing the details later, you work through real shell snippets, choose the missing pieces, and build habits that make scripts safer, cleaner, and easier to debug. Start with the shell skills people use in real work: variables, quoting, command substitution, parameters, permissions, tests, conditionals, loops, functions, arrays, files, redirection, pipelines, regex, process control, and admin tasks. Each unit focuses on one idea, then places it inside code a developer, analyst, DevOps learner, or terminal power user would actually run. The main practice path includes 250 Bash units and more than 2,500 fill-in-the-blank coding moments. Read a snippet, find the blank, and select the exact token that completes the command. This active format keeps practice quick and concrete, helping you recognize syntax, remember operators, and stop guessing when a script fails. A second training mode organizes the course into 12 major topics with 2,400 short challenges. Move through shell fundamentals, variables, data types, logic, loops, functions, file work, text processing, arguments, debugging, process management, job control, and automation. Locked progress gives the path structure, while the dashboard shows what you have mastered and what comes next. Need a fast review session? Open Shell Flashcards and flip through 1,200 cards covering shell basics, script execution, permissions, variables, quoting, I/O, redirection, tests, loops, arguments, functions, arrays, core commands, case statements, and errors. Mark cards as known or review, then keep moving without losing momentum. When you need a reference, use the built-in Shell Cheatsheet. Search Bash keywords, core commands, builtins, and operators. Entries are organized for quick scanning, with clear explanations and example code so you can check syntax while you learn. For deeper study, ShellMaster includes 15 tutorial modules with readable lessons on scripting, shell syntax, control flow, text processing, regex, command-line parsing, debugging, process management, build tools, deployment, and essential command-line habits. Save favorite lessons and return to the concepts you use most. Daily Challenge gives you one bite-size prompt to keep your Bash memory sharp. Answer, check your result, read the explanation, and come back with a little more command-line confidence. Clean code highlighting makes snippets easier to parse. Progress tracking shows completed units and current level. Sound and haptic feedback make practice feel responsive. Use ShellMaster if you are learning Bash for coding, data work, server tasks, terminal confidence, DevOps prep, or everyday automation. Whether you are writing your first script or tightening the habits behind safer shell commands, ShellMaster gives you a practical path from syntax recognition to real command-line fluency.

About

Interval Ear Training

Features
Read full description

Train your ear, improve your relative pitch, and master interval recognition. Interval Ear Training is designed for musicians, students, composers, producers, and music educators who want to recognize musical intervals quickly, accurately, and confidently. Practice all 12 musical intervals in ascending, descending, and harmonic modes while tracking your accuracy, speed, and overall progress. Whether you're studying music theory, preparing for auditions or exams, or strengthening your musicianship, this app provides a focused, distraction-free training experience. Features: • Identify all 12 musical intervals • Three listening modes: Ascending, Descending, and Harmonic • Random root generation for realistic ear training • Real-time scoring and accuracy tracking • Performance rankings from Novice to Grand Master • Clean, intuitive interface designed for focused listening Perfect for: • Music students • Music teachers • Professional musicians • Composers and producers • Anyone developing relative pitch and aural skills Consistent daily practice will help you recognize intervals more accurately in melodies, chords, improvisation, and real music. Start training your ear today.

Screenshots

ShellMaster4 screens
Interval Ear Training3 screens

Verdict

The call

The clearest difference is price: Interval Ear Training at Free against ShellMaster's $6.99. Interval Ear Training also leads on update cadence (every 4 days vs every 6 weeks). ShellMaster's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Interval Ear Training is free to download; ShellMaster costs $6.99 up front. Interval Ear Training sells 1 one-off in-app purchase. ShellMaster asks for nothing beyond the download.

UpkeepUpdate frequency

ShellMaster ships an update every 6 weeks, Interval Ear Training every 4 days. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.

Scorecard3 real differences Ā· 3 level
ShellMaster versus Interval Ear Training: the parameters behind the verdict, then further details
ParameterShellMasterInterval Ear Training
Price$6.99Free — better
Update frequencyEvery 6 weeksEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.415.0 — better
Further details — not scored
Size52 MB110 MB
Age rating4+4+
DeveloperSimTeCon GmbHNORMAN DI BLASIO

In-app purchases

None

ShellMaster

No in-app purchases

1 purchases

Interval Ear Training

One-time1
  • Pro Version$1.99

Questions

Is ShellMaster free?
ShellMaster costs $6.99, with no in-app purchases.
Is Interval Ear Training free?
Interval Ear Training is free to download, with in-app purchases available.
Do ShellMaster or Interval Ear Training have ads?
Neither ShellMaster nor Interval Ear Training shows ads.
Which is updated more often, ShellMaster or Interval Ear Training?
ShellMaster ships an update every 6 weeks, and Interval Ear Training every 4 days. Most recently, ShellMaster was updated on October 3, 2026 and Interval Ear Training on October 1, 2026.

Other comparisons