Comparison

Problem Logger vs Notepad Calculator

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

Head to head
About

Problem Logger

Easily log and track recurring issues over time with a private, dated timeline. Ideal for recording symptoms, home repairs, or any situation where knowing when an event occurred is important. Keep your records secure and local on your device.

Highlights
  • Create dated timelines of events
  • Log incidents in seconds
  • Set optional reminders
  • Review timelines over days/weeks/months
  • Local device storage
  • App lock for privacy
Features
Read full description

Problem Logger helps you keep a simple, private record of things that happen over time. Create a problem, tap Log Now, and build a dated timeline. It works for recurring pain, noisy neighbours, home repair issues, car faults, workplace incidents, care notes, or any situation where knowing when something happened is useful. Why people use Problem Logger: β€’ Keep a dated timeline of recurring or occasional problems β€’ Record when something happened in seconds β€’ Set optional reminders so you remember to check in β€’ Review your timeline over days, weeks, or months β€’ Keep records local on your device β€’ Use Face ID or Touch ID app lock for extra privacy Useful for: β€’ Symptoms, pain, sleep issues or side effects β€’ Noise, neighbour or nuisance records β€’ Landlord, home repair or maintenance problems β€’ Vehicle, appliance or device faults β€’ Workplace incidents or recurring concerns β€’ Pet, family or care-related observations β€’ Any problem where a clear record helps Problem Logger is flexible. It is not limited to one type of problem and does not force you into a medical, legal, or complaint workflow. Start with a timestamp and build a clear personal record over time. Privacy first: β€’ No account required β€’ Logs are stored locally on your device β€’ App lock support is available Problem Logger does not provide medical, legal, or professional advice. It helps you keep a personal record that you can review when needed.

About

Notepad Calculator

Features
Read full description

Notepad Calculator is a smart calculator disguised as a notepad. Instead of juggling a calculator app and a notes app, just write what you're thinking β€” every line is calculated instantly, right next to your words. Write math the way you think Type expressions in plain language and get answers on the same line: 500 + 200 * 3 β†’ solved as you type, no equals button needed 10 km in miles, 5 feet 6 inches + 8 in today + 3 weeks, Jan 1 2025 to Mar 1 2025 tax = 15% then reuse price + tax anywhere below 8%, VAT, tip, subtotals and totals with #tag aggregation Every answer becomes a variable you can reference later, so multi-step calculations stay readable. Powerful, all offline A fast local engine handles a huge range of math with no internet, accounts, or AI required: Functions: sqrt, sin, cos, tan, log, ln, exp, abs, round, max, min, pow, and more Constants: pi, tau, phi, e Units & conversions: length, weight, volume, time, speed, temperature, electrical, and custom units Currency conversion with offline-cached exchange rates and a live "Update Rates" refresh Statistics, percentages, bases & bitwise (hex/binary/octal), trig in degrees or radians Chinese large-number support (δΈ‡ / δΊΏ) and spelled-out numbers (million, billion) Make it yours Definition Sheet β€” define global variables, your own units (1 box = 12 items), and custom functions (f(x) = x * 2) that apply to every document Organize work into folders, pin, archive, and search across all notes Headers (# Title), dividers (---), and tag totals keep long sheets tidy Tint the results column, align answers, and adjust line spacing to taste Export any sheet to Markdown or CSV Built for Mac Menubar Quick Calc β€” pop open an instant calculator from the status bar without leaving your work iCloud sync β€” your notes and calculations follow you to iPhone and iPad Native Mac storage, autosave, and a clean three-pane layout (sidebar Β· editor Β· live results) Smart autocomplete for units, currencies, functions, and variables 10 interface languages with live switching Whether you're estimating a project budget, converting recipes, planning a trip, or just splitting a bill, Notepad Calculator turns your notes into a living spreadsheet β€” without the spreadsheet.

Screenshots

Problem Logger4 screens
Notepad Calculator3 screens

Verdict

The call

The clearest difference is price: Notepad Calculator at $2.99 against Problem Logger's $9.99. On ads, in-app purchases, device support and iOS requirement 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

Problem Logger costs $9.99 and Notepad Calculator $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference Β· 6 level
Problem Logger versus Notepad Calculator: the parameters behind the verdict, then further details
ParameterProblem LoggerNotepad Calculator
Price$9.99$2.99 β€” better
Update frequencyβ€”Fortnightly
AdsNoNo
In-app purchasesNoNo
MonetizationPaidβ€”
DevicesiPhone, iPadiPhone, iPad, Mac β€” better
Requires iOS18.617.0 β€” better
Further details β€” not scored
Size3 MB4 MB
Age rating4+4+
DeveloperThomas Richardsonζ–Ήζˆ 印

In-app purchases

None

Problem Logger

No in-app purchases

None

Notepad Calculator

No in-app purchases

Questions

Is Problem Logger free?
Problem Logger costs $9.99, with no in-app purchases.
Is Notepad Calculator free?
Notepad Calculator costs $2.99, with no in-app purchases.
Do Problem Logger or Notepad Calculator have ads?
Neither Problem Logger nor Notepad Calculator shows ads.

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