Comparison

Panecal Plus Sci. Calculator vs Completely Private Notes

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

Head to head
About

Panecal Plus Sci. Calculator

This app functions as a scientific calculator with a multiline editable display. It allows users to view and modify formulas as they are entered, preventing errors. Past calculations can be reused, and variable memory enables efficient recalculations.

Highlights
  • Multiline editable formulas
  • Re-calculation of past formulas
  • Cursor-based editing and swipe navigation
  • Copy and paste formulas
  • Formula and answer history
  • Number base conversion (binary, octal, decimal, hex)
  • Variable memory
Features
Read full description

[Description] Panecal is a scientific calculator app that allows you to display and modify formulas. It allows you to enter formulas while checking them, which prevents you from typing incorrectly or making calculation errors. It is also possible to reuse past formulas and use variable memory to change only certain values to calculate them.  The display shows the cursor, and you can tap or press the arrow keys to quickly navigate to where you want to edit. It has a powerful, flexible and intuitive user interface with support for swiping to scroll through formulas and long-tap to copy and paste.   [Features] - Re-calculation by using past formula - Easy editing by using a cursor operation and swipe the screen - Copy and paste formulas text - Formulas history and answers history table - Binary numbers, octal numbers, decimal numbers, hexadecimal numbers calculation and conversion (Max.32bits) - M+/M- memory functions and variable(A-F) memory - Arithmetic operations, inverse trigonometric functions, logarithmic functions, power functions, power root functions, factorials, absolute values, percent calculations, modulo calculation, polar and cartesian coordinate conversion - Angle units (DEG, RAD, GRAD) - Result format with Normal(standard), Fix (fixed decimal mode), Sci (significant figures), and Eng (index is in multiples of 3) - Decimal point character and grouping separator settings [Disclaimer] Please note in advance that Appsys is not responsible for any damage or lost profits caused by the use of this software, or any claims from third parties.

About

Completely Private Notes

Features
Read full description

A quiet place for notes you want to keep to yourself. Completely Private Notes stores encrypted text and images only on your iPhone. Pay once. No subscriptions. • No server communication, accounts, ads or analytics • A 6–12 digit PIN and optional Face ID • Up to five encrypted images per note • A private camera that does not save shots to Photos • Search your notes and write immediately • Automatic locking when the app becomes inactive • No cloud sync, backup or export IMPORTANT There is no PIN reset, data recovery or transfer to a new device. Forgetting your PIN, losing your device or deleting the app can make your notes permanently inaccessible. Ten incorrect PIN attempts erase the encryption key and content. Protection does not extend to a compromised or jailbroken device, viewing or screenshots while unlocked, or originals imported from Photos or iCloud. Only the copy stored inside the app is encrypted. Face ID is optional; if enabled, anyone able to pass the device’s Face ID authentication may unlock the vault. Available in English, Japanese, German, Spanish, French, Italian, Korean, Portuguese, Russian and Simplified Chinese. Additional information: You can create, view and edit notes without an internet connection.

Screenshots

Panecal Plus Sci. Calculator4 screens
Completely Private Notes4 screens

Verdict

The call

The clearest difference is update cadence: Completely Private Notes at fortnightly against Panecal Plus Sci. Calculator's every 3 months. Completely Private Notes also leads on price ($1.99 vs $2.99). Panecal Plus Sci. Calculator's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On ads and in-app purchases 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

Panecal Plus Sci. Calculator costs $2.99 and Completely Private Notes $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Panecal Plus Sci. Calculator ships an update every 3 months, Completely Private Notes fortnightly. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 6 level
Panecal Plus Sci. Calculator versus Completely Private Notes: the parameters behind the verdict, then further details
ParameterPanecal Plus Sci. CalculatorCompletely Private Notes
Price$2.99$1.99 — better
Rating4.8 (376 ratings) — better—
Positive reviews79.3% of reviews—
Number of ratings376 — better—
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better17.0
Further details — not scored
Size18 MB1 MB
Age rating4+4+
DeveloperNoriyasu KutsuzawaSOTEN, LLC.

In-app purchases

None

Panecal Plus Sci. Calculator

No in-app purchases

None

Completely Private Notes

No in-app purchases

Questions

Is Panecal Plus Sci. Calculator free?
Panecal Plus Sci. Calculator costs $2.99, with no in-app purchases.
Is Completely Private Notes free?
Completely Private Notes costs $1.99, with no in-app purchases.
Do Panecal Plus Sci. Calculator or Completely Private Notes have ads?
Neither Panecal Plus Sci. Calculator nor Completely Private Notes shows ads.
Which is updated more often, Panecal Plus Sci. Calculator or Completely Private Notes?
Panecal Plus Sci. Calculator ships an update every 3 months, and Completely Private Notes fortnightly. Most recently, Panecal Plus Sci. Calculator was updated on November 1, 2026 and Completely Private Notes on October 29, 2026.

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