Comparison

Stratum 9 vs NoteCalc

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

Head to head
About

Stratum 9

This app provides a science-backed framework for achieving and sustaining elite performance. It offers self-assessment tools, personalized development plans, practical strategies, and goal-setting tools to help users improve across all areas of life.

Highlights
  • Self-Assessment Tools
  • Customized Skill Development Plans
  • Performance Library (TacApps)
  • DOIT Goal Strategy
  • Daily Challenges & Progress Tracking
  • Community and Peer Support
Features
Read full description

Welcome to Stratum 9, where high performance is not just a goal; it's a journey of transformation. Drawing from the groundbreaking framework presented in "The 9th Stratum" by Aaron Salko, this app offers a comprehensive, science-backed path to not just achieving but sustaining elite performance levels across all facets of your life. Features: 1. Self-Assessment Tools: Begin with the S9 Self-Assessment to pinpoint your current performance levels across 45 critical skills. Understand where you excel and where there's room for growth. 2. Customized Skill Development Plans: Based on your assessment, receive a personalized plan designed to elevate your performance from your current stratum to the pinnacle of the 9th Stratum. 3. Performance Library: Dive into an array of Tactical Applications (TacApps) from 9th Stratum Performance Leaders that provide practical strategies for skill improvement, from enhancing work ethic, improving health, to refining emotional intelligence. 4. Goal Strategy with DOIT: Move beyond SMART goals with our unique DOIT (Define, Organize, Initiate, Time) strategy, specifically designed to set, pursue, and achieve ambitious goals. 5. Daily Challenges and Progress Tracking: Engage with daily challenges tailored to your goals, track your progress, and visually see your ascent through the strata of performance. 6. Community and Peer Support: Join or form your Peer-to-peer Accountability Unit (PPAU) to share experiences, challenges, and victories. Foster a supportive environment for mutual growth. 7. Create Your Own Library: Create a library of articles, videos, and podcasts featuring experts in psychology, physiology, and human biology, offering deeper insights into high performance. Whether you're looking to make significant strides in your career, enhance your personal relationships, or simply live a more fulfilled life, Stratum 9 provides the roadmap to not just reach but exceed your highest expectations. Embrace the journey to high performance today and redefine what you thought possible for tomorrow.

About

NoteCalc

Seamlessly blend note-taking with real-time calculations. Capture ideas, track expenses, and create lists with instant results as you type or speak. Offers smart input features like voice notes and document scanning for enhanced productivity.

Highlights
  • Simultaneous note-taking and calculation
  • Instant results as you type
  • Voice note input
  • Document and receipt scanning
  • Expense and budget tracking
  • Shopping list creation with automatic totals
Features
Read full description

NoteCalc lets you write notes and calculate at the same time — no switching apps. Just type naturally and see results instantly. Capture ideas, lists, budgets, expenses, formulas, and everyday math in one place. Everything stays simple, fast, and organized. WHY NOTECALC Write like normal notes Results appear instantly as you type No buttons, no formulas, no interruptions Clean, fast, and easy to use WHAT YOU CAN DO Track expenses and budgets Create shopping lists with automatic totals Take notes with calculations Do quick daily math without switching apps SMART INPUT FEATURES Voice Notes Speak numbers or notes and get results instantly Scan Documents & Receipts Scan receipts and turn them into editable notes with calculations Type Naturally Just write — calculations appear automatically USE CASES Daily expense tracking Budget planning Shopping lists Study and work notes Quick calculations anytime PREMIUM FEATURES (OPTIONAL) Lock notes for privacy Tags and organization Charts and insights Cloud sync Export options Your notes stay on your device. You stay in control. Privacy Policy: https://nullvoidkage.notion.site/Privacy-Policy-31d5fa80930a8057a60cc6995100de7f Terms of Service: https://nullvoidkage.notion.site/Terms-Of-Service-31d5fa80930a807f954ee0de97ab96f3

Screenshots

Stratum 94 screens
NoteCalc4 screens

Verdict

The call

The clearest difference is in-app purchases: Stratum 9 at none against NoteCalc's 7. Stratum 9 also leads on iOS requirement (13.4 vs 16.0). NoteCalc's advantage is update cadence (every 5 days vs every 5 weeks) and ratings volume (12 vs 2). On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. NoteCalc sells 6 in-app purchases, starting at $1.99 per month. Stratum 9 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Stratum 9 against 4.9 for NoteCalc. That said, the two scores are not equally well evidenced: NoteCalc has 12 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Stratum 9 ships an update every 5 weeks, NoteCalc every 5 days. Both last shipped on November 4, 2026.

Scorecard5 real differences · 5 level
Stratum 9 versus NoteCalc: the parameters behind the verdict, then further details
ParameterStratum 9NoteCalc
PriceFreeFree
Rating5.0 (2 ratings) — better4.9 (12 ratings)
Positive reviews—100.0% of reviews
Number of ratings212 — better
Update frequencyEvery 5 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, Mac — better
Requires iOS13.4 — better16.0
Further details — not scored
Size35 MB81 MB
Age rating4+9+
Developer9th Stratum Publishing LLCNikko Ferwelo

Customer experience

Stratum 9

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

NoteCalc

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Stratum 9

No in-app purchases

6 purchases

NoteCalc

Subscriptions4
  • Smart Notes Monthly$1.991 Month
  • Smart Notes Monthly$2.991 Month
  • Note Calc Yearly$5.991 Year
Show 1 more
  • Smart Notes Yearly$7.991 Year
One-time2
  • Smart Notes Lifetime2 variants$5.99
  • Unlock Lifetime$12.99

Questions

Is Stratum 9 free?
Stratum 9 is free to download, with no in-app purchases.
Is NoteCalc free?
NoteCalc is free to download, with in-app purchases available.
Which has better reviews, Stratum 9 or NoteCalc?
Stratum 9 is rated higher. Stratum 9 averages 5.0 out of 5 from 2 ratings, while NoteCalc averages 4.9 from 12 ratings.
Do Stratum 9 or NoteCalc have ads?
Neither Stratum 9 nor NoteCalc shows ads.
Which is updated more often, Stratum 9 or NoteCalc?
Stratum 9 ships an update every 5 weeks, and NoteCalc every 5 days. Most recently, Stratum 9 was updated on November 4, 2026 and NoteCalc on November 4, 2026.

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