Comparison

Calculator T vs Time Notes

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

Head to head
About

Calculator T

This app offers advanced scientific calculation and unit conversion capabilities. It features a history tape, memory functions, and supports complex mathematical operations. It also includes currency exchange rates and a wide range of measurement conversions.

Highlights
  • Standard and scientific function modes
  • Extensive unit conversion (over 300 units)
  • History tape for last 100 records
  • Memory buttons (MS, M+, M-, MR, MC)
  • Copy/paste functionality for equations and results
  • Support for large number calculations and scientific notation
  • Currency exchange rate conversion
Features
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● Functional Features: 1. Supports standard and scientific function modes. 2. Supports many unit conversion. 3. Displays both the equation & the result. 4. History Tape View - the most recent 100 historical records are automatically saved on your device, you can get them when you open the APP next time. 5. Supports 5 memory buttons and multiple memory records: MS (M Save), M+, M-, MR (M Recall) and MC (Clear Memory), If you often use Windows calculators, then you should be familiar with them. ^_^ 6. Supports copying for both current input and historical records by tap & hold on it - you can copy the equation/expression or the result to the clipboard. 7. Supports pasting equation/expression into input box with robust expression parsing capabilities from the clipboard. 8. Supports long equation/expression input - maximum 1500 characters. 9. Supports insert the equation or result of the historical record into the input box by tap & hold on it. 10. Optimized the layout for iPad, designed with elegant, easy and intuitive interface. 11. Turn on the F-E button to force convert the result to E-notation (scientific notation). 12. When you press the equals button, the APP will automatically fill in any unclosed parentheses in the equation. 13. Supports Equals Repeat function - the APP will automatically repeat it if the last calculation is simple arithmetic operations (+, -, Γ—, Γ·). 14. No ads. ● Math & ALGEBRA Features: 1. Supports 32-bit input precision & calculation precision, this means you can enter 32-bit integer or 32 decimal places. 2. Supports input of maximum scientific notation exponent "9999", eg. 999999E9999. 3. Supports big integer & rational number: For the factorial calculation of positive integer, up to 10000! (about 2.846E+35659). For the calculation result, maximum support 9.999E+99999999. 4. Support constants Ο€, e. 5. Supports switching three angle units (RAD, DEG, GRAD), instead of applying it to the entire equation, we identify the unit of angle for each trigonometric function, so you get a clearer understanding of what the equation means. 6. Supports advanced calculations, including n!, ^, mod, √, log, ln, cube, square, cube root, y root, abs, ceil, random, floor and exponential functions etc. 7. Supports trigonometric functions (sin, cos, tan, asin, acos, atan) and hyperbolic functions (sinh, cosh, tanh, asinh, acosh, atanh). ● Unit Converter Features: 1. Supports multiple weight and measurement unit conversions - Volume, Length, Weight & Mass, Time, Energy, Area, Speed, Temperature, Power, Data, Pressure and Angle. 2. Supports currency exchange rate conversion (over 160 different currency units, and exchange rate data are hourly updated). 3. Supports 300+ Units. 4. Supports favorites function for quick conversions - allows setting 4 frequently used units for each conversion category. 5. We take the accuracy of conversion very seriously, and therefore, We had carefully verified the conversion values of each unit. Such as: when it comes to the electron-volt, many converters use different values, such as 1 eV = 1.60217656535E-19 J, 1 eV = 1.602176473E-19 J, and so on. However, we found that the CODATA 2018 recommended value (latest version) is 1 eV = 1.602176634E-19 J, so we use this latest recommended value. ● Multiple Languages: 1. English 2. Japanese 3. Chinese If you’re using an iPad or iPhone, you can enjoy the Calculator T application, hope it can assist you with your studies and work. If you find it useful, please consider supporting us by leaving a positive review and sharing your suggestions. Thanks :)

About

Time Notes

Features
Read full description

Time Notes is a versatile diary app designed to capture every precious moment in life. It integrates mood journaling, inspiration recording, and goal planning, becoming a reliable companion for sorting out emotions and managing life. Mood Journaling Record daily moods with text, emojis, or simple sketches. Mark the weather and environment when the mood occurs to form a vivid mood log. Over time, it automatically generates a mood trend chart, helping you better understand your emotional changes and find the factors that affect your mood. Inspiration Recording Seize fleeting inspirations anytime and anywhere. Whether it's a sudden creative idea, a profound insight in reading, or an interesting life detail, you can quickly record it with text, voice, or photos. The app supports keyword tagging, making it easy to search and organize inspirations, turning fragmented thoughts into valuable resources. Goal Planning Set short-term and long-term goals, break them down into actionable steps, and set completion deadlines. The app sends timely reminders to ensure you don't miss important progress nodes. It also records the completion status of each step, showing the goal achievement process intuitively through progress bars and statistics, motivating you to keep moving forward. Time Notes focuses on user experience with a simple and elegant interface and smooth operation. It ensures the security of your records through password protection and data encryption. Let Time Notes witness your growth and accompany you to live a more organized and fulfilling life. Privacy Policy:https://sites.google.com/view/time-notes/privacy-policy EULA:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Calculator T4 screens
Time Notes3 screens

Verdict

The call

The clearest difference is update cadence: Calculator T at every 2 days against Time Notes's every 3 months. Calculator T also leads on device support (3 vs 1) and iOS requirement (11.0 vs 16.0). On price, ads and in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Calculator T ships an update every 2 days, Time Notes every 3 months. The most recent releases landed on November 4, 2026 and November 8, 2026 respectively.

Scorecard3 real differences Β· 5 level
Calculator T versus Time Notes: the parameters behind the verdict, then further details
ParameterCalculator TTime Notes
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 2 days β€” betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeβ€”
DevicesiPhone, iPad, iPod β€” betteriPhone
Requires iOS11.0 β€” better16.0
Further details β€” not scored
Size16 MB9 MB
Age rating4+4+
DeveloperXiao Hou Yi Sheng Traditional Chinese Medicine Technology (Shenzhen) Co., LtdFENGHUI (HK) HOLDINGS LIMITED

In-app purchases

None

Calculator T

No in-app purchases

None

Time Notes

No in-app purchases

Questions

Is Calculator T free?
Calculator T is free to download, with no in-app purchases.
Is Time Notes free?
Time Notes is free to download, with no in-app purchases.
Do Calculator T or Time Notes have ads?
Neither Calculator T nor Time Notes shows ads.
Which is updated more often, Calculator T or Time Notes?
Calculator T ships an update every 2 days, and Time Notes every 3 months. Most recently, Calculator T was updated on November 4, 2026 and Time Notes on November 8, 2026.

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