MCalc vs SPL Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MCalc
A simple, expandable calculator with numerous advanced features. It supports 28 operators, 84 functions including trigonometric and scientific ones, and allows users to create custom JavaScript functions. The app offers instant calculation, error highlighting, and a history of previous calculations.
- 28 operators including bitwise
- 84 scientific and trigonometric functions
- Custom JavaScript function creation
- Instant calculation with error highlighting
- Unlimited memory slots
- Calculation history
- 3 customizable themes
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Einfacher erweiterbarer Taschenrechner mit vielen Zusatzfunktionen • 28 Operatoren wie die Standardoperatoren + und - oder Bitweise Operatoren wie lshift und rshift • 84 Funktionen ◦ Trigonometrische Funktionen von Sinus, Kosinus, Tangens bis Versin, Vercosin und Chord ◦ Alle üblichen Wissenschaftliche Funktionen von log bis pow, sqrt und factorial ◦ Viele weitere wie average, round, stddev, min, max , ggt und kgv • Dokumentation über alle Funktionen und Operatoren • Erstelle eigene Funktionen mit JavaScript • Unbegrenzte Memory Plätze für Resultate und Rechnungen • Eine ganze Rechung mit Klammern und Funktionen eingeben • Sofortberechnung, du siehst sofort das Resultat beim eintippen • Es wird dir angezeigt, wo du einen Eingabefehler gemacht hast • Verlauf um zu einer alten Rechnung zurückzukehren • 3 verschiedene Themes • Vollständig Gratis Für Entwickler: • Url-Scheme: calculate:// oder mcalc:// • X-Callback
SPL Meter
This tool measures ambient noise levels in real-time, providing decibel readings to help you understand noise intensity and protect your hearing. It features an intuitive gauge, explanations of noise levels, and recording capabilities to track variations across locations and times.
- Real-time decibel measurement
- Intuitive gauge display
- Noise level explanations
- Recording functionality
- Track noise variations
- Hearing protection guidance
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noiseDB is a professional noise measurement tool that helps you monitor ambient noise levels in real-time. Through precise decibel measurements, you can understand the intensity of noise you're exposed to in daily life, protecting your hearing health. The app features an intuitive gauge display, detailed noise level explanations, and recording functionality that allows you to track noise variations across different locations and times. Whether you're checking your work environment, home noise levels, or evaluating sound levels in public spaces, noiseDB is your ideal choice. Understand noise and protect your hearing with noiseDB. This app is using the standard Apple Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: MCalc at none against SPL Meter's 2. MCalc also leads on iOS requirement (13.0 vs 15.0). 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
Both are free to download. SPL Meter sells 2 in-app purchases, starting at $1.99 per 7 days. MCalc asks for nothing beyond the download.
| Parameter | MCalc | SPL Meter |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (11 ratings) — better |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | — | 11 — better |
| Update frequency | — | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 4 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Marcin Kessler | 金红 李 |
Customer experience
MCalc
SPL Meter
In-app purchases
MCalc
No in-app purchases
SPL Meter
- Unlimited access$1.997 Days
- Unlimited access$9.991 Year









