Comparison

Easy Note Calc vs Sound Effect Generator

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

Head to head
About

Easy Note Calc

Features
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Easy Note Calc is a notepad you can do maths in. Write a line the way you'd write it on paper β€” "Rent: 1,200" or "Tile: 61.50 Γ— 32" β€” and the answer appears beside it. Nothing to set up, no cells, no formula bar. Write it like a note Put a label before a colon and it stays plain text. "Kitchen remodel β€” spring 2026:" is a heading, not a sum. Anything after the colon is the maths. Wrap an aside in double colons β€” ::quartz, installed:: β€” and it's a comment the calculator ignores. Your notes read like notes, and still add up. Point at other lines with @ β€’ @1 β€” the result of line 1 β€’ @rent β€” every line containing that word, added together β€’ @s2 β€” the total of another saved note, pulled into this one Change one number and everything pointing at it follows. Use @rent for a running subtotal and it updates as you add lines, without you touching it. Months, filled in automatically Every line with a number lands in the Months tab, grouped by the month you wrote it. See a month's total and how it compares with the month before. Switch to "By name" and every repeated word becomes its own running total for the year β€” tap one for a 12-month chart. There is nothing to categorise or tag. If you type "Rent" every month, Rent starts tracking itself. A real calculator too A full keypad with a running tape, kept and grouped by day, so yesterday's sums are still there tomorrow. Tap any past result to carry on from it. The same @ references work here β€” pull in a line, or a whole saved note's total, then send the answer back into your note. Everything else β€’ Multiple notes, each saved as you type β€’ Scientific functions β€” sin, cos, tan, log, ln, sqrt, factorial, Ο€ and e β€’ 10 themes, five dark and five light β€’ Search across every note β€’ Share or export as text or as an image β€’ Undo and redo β€’ A tap-friendly keypad, or just use your keyboard Your notes stay on your device No account. No sign-up. Works completely offline. Everything you write is stored on your phone and is never uploaded anywhere. Easy Note Calc is free, supported by ads. Good for budgets, quotes and invoices, shopping totals, homework, unit conversions, job costing, splitting bills, or any time you want a scratch pad that does the adding for you.

About

Sound Effect Generator

Features
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Sound Effect Generator is a powerful sound design workstation built specifically for game developers, UI designers, and creative hobbyists. Tired of scouring stock libraries for the "perfect" jump or explosion? Sound effect generator puts the power of synthesis in your hands, allowing you to generate high-quality, royalty-free sound effects in seconds - no installation required. Infinite Variety, Zero Samples Unlike traditional sound libraries that rely on static recordings, Sound Effect Generator uses procedural synthesis. By manipulating raw waveforms, noise generators, and complex modulation chains, you can create an infinite variety of sounds. From the gritty, 8-bit charm of a retro "Blip" to the cinematic weight of a deep-space "Explosion," the possibilities are limited only by your imagination. Intelligent Randomization: Use our "DNA-based" presets to instantly generate sounds like Lasers, Coins, Power-ups, and more. Every click produces a unique variation, ensuring your game’s audio never feels repetitive. Pro-Grade Signal Chain: Fine-tune your audio with a full suite of professional tools, including ADSR envelopes, LFO pitch modulation, Bitcrushing, Distortion, and a 10-step Pitch Sequencer for complex arpeggios. Real-Time Visualization: "See" your sound as you build it. Our integrated oscilloscope provides live waveform feedback, showing you exactly how filters and distortion are shaping your audio. Studio-Ready Export: When you’ve dialed in the perfect sound, export it instantly as a high-fidelity WAV for development or a compressed MP3 for web use. Whether you are building the next indie hit or just need a satisfying "Click" for your latest app, Sound Effect Generator is the fastest, leanest way to build a custom audio universe.

Screenshots

Easy Note Calc4 screens
Sound Effect Generator4 screens

Verdict

The call

The clearest difference is in-app purchases: Easy Note Calc at none against Sound Effect Generator's 1. Easy Note Calc also leads on iOS requirement (15.1 vs 17.6). On price, ads and device support there is nothing between them.

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

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

Both are free to download. Sound Effect Generator sells 1 one-off in-app purchase. Easy Note Calc asks for nothing beyond the download.

Scorecard2 real differences Β· 4 level
Easy Note Calc versus Sound Effect Generator: the parameters behind the verdict, then further details
ParameterEasy Note CalcSound Effect Generator
PriceFreeFree
Update frequencyEvery 2 weeksβ€”
AdsYesYes
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS15.1 β€” better17.6
Further details β€” not scored
Size30 MB11 MB
Age rating4+4+
DeveloperDen Digital LLCBrandon Stecklein

In-app purchases

None

Easy Note Calc

No in-app purchases

1 purchases

Sound Effect Generator

One-time1
  • Sound Effect Generator Premium$2.99

Questions

Is Easy Note Calc free?
Easy Note Calc is free to download, with no in-app purchases.
Is Sound Effect Generator free?
Sound Effect Generator is free to download, with in-app purchases available.
Do Easy Note Calc or Sound Effect Generator have ads?
Both Easy Note Calc and Sound Effect Generator show ads.

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