Comparison

Decibel Meter vs CPU Rank

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

Head to head
About

Decibel Meter

Measure ambient sound levels in real-time using your device's microphone. Understand your environment's noise status, save measurement sessions, and generate PDF reports with data and scene photos. Useful for everyday reference and record-keeping.

Highlights
  • Real-time decibel readings
  • Spectrum analysis
  • Environment status labels
  • Session statistics
  • Measurement history
  • Audio playback
  • Scene photo records
  • PDF reports
Features
Read full description

Decibel Meter turns your phone into a quick way to check how loud a place really is. Tap Start and you see the current sound level in dB with a live spectrum. End the session and the app keeps the average, peak and minimum values, the duration and the audio it recorded, so you can go back and compare later. WHAT YOU CAN DO โ€ข Live dB reading with a spectrum that reacts to the room โ€ข Save a session together with its audio and stats โ€ข Review every session in History and replay the recording โ€ข Generate a PDF report from a session, or attach one you already have โ€ข Take a scene photo with the time, place and reading printed on it โ€ข Calibrate the offset so readings sit closer to a reference meter โ€ข Compare a reading with familiar places: library, office, traffic, construction WHERE PEOPLE USE IT โ€ข Noise from renovation, machines or the road outside โ€ข Talking to a neighbour, a landlord or a building manager with something concrete โ€ข Checking whether a bedroom or study is quiet enough โ€ข Comparing two rooms, or the same room before and after a change EVERYTHING STAYS ON YOUR PHONE Recordings, reports and photos are saved on the device. The app does not upload them. PERMISSIONS โ€ข Microphone: needed to measure sound. Keep the app in the foreground while measuring. โ€ข Camera and location: used only when you take a scene photo with the reading on it. PLEASE NOTE Readings come from your phone's microphone, so they vary between devices and are affected by cases, dust and system audio processing. Calibration helps, but the numbers and reports are for reference and comparison only. They do not replace a calibrated sound level meter or a certified test report. Free with ads.

About

CPU Rank

Features
Read full description

CPU Rank is a native iOS application for iPhone and iPad that provides comprehensive CPU performance rankings and comparisons. Unlike scattered online benchmarks, this app features a clean, modern interface with fluid native animations and dark mode support โ€” redefining how CPU performance data is accessed and compared. The app covers 5900+ CPUs with detailed specifications including multi-core score, single-core score, core count, frequency, TDP, socket type, and release date. It also supports multi-dimensional filtering, performance tier charts, and side-by-side comparisons โ€” the perfect tool for PC builders, tech enthusiasts, and hardware researchers. Highlight: Tap any CPU to enter an immersive detail view. Compare up to 5 CPUs side-by-side with interactive charts. Multi-language support available for users worldwide (English, Chinese, Japanese, Korean, German, French, Spanish, Portuguese, Russian). ## Features ### Modern User Experience - **Clean Interface**: Minimalist design with system-native UI components and smooth animations. - **Dark Mode Support**: Seamlessly adapts to system appearance with optimized color schemes. - **Universal Device Support**: From iPad Pro to iPhone SE, elegant adaptive layouts with free portrait/landscape switching. - **Multi-language Support**: Switch interface language with one tap (10 languages supported). ### Comprehensive Data & Filtering - **Performance Rankings**: Browse 5900+ CPUs sorted by multi-core or single-core performance. - **Smart Search**: Quickly locate CPUs by model name with instant results. - **Category Filter**: Filter by Desktop, Laptop, Server, or Mobile/Embedded processors. - **Brand Filter**: Focus on specific brands (Intel, AMD, Apple, ARM, and more). - **Socket Type Groups**: Browse CPUs by socket compatibility (LGA1700, AM5, etc.). - **Release Year Filter**: Find CPUs by release quarter and year. ### Performance Tier Chart - **Visual Ranking**: Color-coded performance tiers (Flagship, High-End, Mid-Range, Entry-Level). - **Timeline View**: See how CPU performance evolved over recent years. - **Score Distribution**: Understand where each CPU stands in the performance spectrum. ### Advanced Comparison - **Multi-CPU Comparison**: Compare up to 5 CPUs side-by-side with detailed specs. - **Interactive Charts**: Visual comparison of multi-core and single-core scores. - **Parameter Table**: Side-by-side comparison of all technical specifications. - **Comparison History**: Revisit your previous comparisons with one tap. ### User-Friendly Features - **Favorites**: Bookmark CPUs you're interested in for quick access. - **Browse History**: Automatically tracks recently viewed CPUs. - **Similar CPUs**: Discover CPUs with similar performance levels. - **Offline Mode**: All data stored locally โ€” works without internet connection. ## Who Is It For? **PC Builders**: Planning your next build? Compare CPUs by performance, socket type, and release date. Find the perfect processor for your budget and use case โ€” gaming, productivity, or content creation. **Tech Enthusiasts**: Stay up-to-date with the latest CPU releases. Compare flagship processors from Intel, AMD, and Apple. Understand performance trends and make informed upgrade decisions. **Hardware Researchers**: Look up detailed CPU specifications on the go. Access comprehensive data including cache sizes, memory support, and TDP ratings โ€” perfect for technical analysis. **Laptop Shoppers**: Compare mobile processors to find the best laptop for your needs. Filter by performance tier and see which CPUs offer the best balance of power and efficiency. **IT Professionals**: Quickly reference server CPU specifications for infrastructure planning. Compare multi-core performance for virtualization and compute workloads. ## Support or Contact **Email**: supportsw365@163.com Have questions, suggestions, or found a bug? We'd love to hear from you! --- *Data updated: 2026-05-11* *Total CPUs: 5935*

Screenshots

Decibel Meter4 screens
CPU Rank4 screens

Verdict

The call

Decibel Meter and CPU Rank are too close to call on the numbers: across 5 compared parameters โ€” price, ads, in-app purchases and device support among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Decibel Meter costs $0.99 and CPU Rank $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
Decibel Meter versus CPU Rank: the parameters behind the verdict, then further details
ParameterDecibel MeterCPU Rank
Price$0.99$0.99
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 3 monthsโ€”
AdsNoNo
In-app purchasesNoNo
MonetizationPaidโ€”
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details โ€” not scored
Size41 MB18 MB
Age rating4+4+
Developerๆ’็›› ็จ‹็ซ‹ๅจœ ็Ž‹

In-app purchases

None

Decibel Meter

No in-app purchases

None

CPU Rank

No in-app purchases

Questions

Is Decibel Meter free?
Decibel Meter costs $0.99, with no in-app purchases.
Is CPU Rank free?
CPU Rank costs $0.99, with no in-app purchases.
Do Decibel Meter or CPU Rank have ads?
Neither Decibel Meter nor CPU Rank shows ads.

Other comparisons