Comparison

Sub System vs CLF

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

Head to head
About

Sub System

This app allows audio engineers and sound designers to visualize sound pressure levels and their interactions. Users can place virtual speakers and microphones, manipulate them with touch gestures, and observe colorful graphs of SPL and frequency response to understand acoustical summation.

Highlights
  • Virtual speaker placement
  • Sound pressure level visualization
  • Frequency response graphs
  • Virtual microphone simulation
  • Touch-based manipulation
  • Acoustical summation understanding
Features
Read full description

An app for audio engineers and sound designers. It will let the user place virtual speakers around and see the sound pressure levels that they produce, including the interactions between sources. Colorful graphs for SPL. Frequency response based on virtual microphones. Speakers and Mics are moved around using touch functions. Zoom in, out. All graphics are touchable. Best use is to understand how acoustical summation is produced.

About

CLF

Features
Read full description

PASS YOUR AWS CERTIFIED CLOUD PRACTITIONER EXAM Master AWS cloud fundamentals with 600+ practice questions designed to build real exam confidence and help you pass on your first attempt. 600+ practice questions 5-minute study sessions Track your progress Remove mastered questions Text-to-speech support Dark mode available WHY GET CERTIFIED? The AWS Certified Cloud Practitioner is the foundational credential that validates your understanding of AWS cloud services and positions you for career growth in one of the most in-demand areas of technology. Whether you are pivoting into cloud or strengthening your existing IT career, this certification signals credible cloud fluency to employers worldwide. WHAT YOU'LL MASTER: • AWS Shared Responsibility Model • EC2 Purchasing Options and Compute Fundamentals • S3 Storage Classes and Lifecycle Policies • Cloud Migration Strategies and the 7 Rs • AWS Support Plans and Trusted Advisor • IAM Policies, Roles, and Root User Security • VPC, Security Groups, NACLs, and Direct Connect • AWS Well-Architected Framework • Cloud Financial Management and Billing Tools • Cost Allocation Tags and Consolidated Billing • Serverless Services including Lambda and Fargate • ECS and Container-Based Compute • Database Services including RDS, DynamoDB, and ElastiCache • Security Services including GuardDuty, AWS Config, CloudHSM, Shield, and WAF • CloudFront, Regions, Edge Locations, and Global Infrastructure STUDY ANYWHERE: Coffee breaks. Commutes. Lunch hours. Turn dead time into Cloud expertise. Download now. Pass your exam. Master Cloud.

Screenshots

Sub System4 screens
CLF3 screens

Verdict

The call

The clearest difference is price: CLF at Free against Sub System's $30.00. Sub System's advantage is in-app purchases (none vs 3) and update cadence (every 10 days vs every 2 months). On ads and device support 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

CLF is free to download; Sub System costs $30.00 up front. CLF sells 3 in-app purchases, starting at $3.99 per month. Sub System asks for nothing beyond the download.

UpkeepUpdate frequency

Sub System ships an update every 10 days, CLF every 2 months. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

Scorecard4 real differences Ā· 4 level
Sub System versus CLF: the parameters behind the verdict, then further details
ParameterSub SystemCLF
Price$30.00Free — better
Positive reviews100.0% of reviews—
Update frequencyEvery 10 days — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size48 MB27 MB
Age rating4+4+
Developersebastian rivasDavy Raitt

In-app purchases

None

Sub System

No in-app purchases

3 purchases

CLF

Subscriptions2
  • Pro Monthly$3.991 Month
  • Pro Yearly7 Days trial$14.991 Year
One-time1
  • Pro Lifetime$19.99

Questions

Is Sub System free?
Sub System costs $30.00, with no in-app purchases.
Is CLF free?
CLF is free to download, with in-app purchases available.
Do Sub System or CLF have ads?
Neither Sub System nor CLF shows ads.
Which is updated more often, Sub System or CLF?
Sub System ships an update every 10 days, and CLF every 2 months. Most recently, Sub System was updated on October 7, 2026 and CLF on October 11, 2026.

Other comparisons