Comparison

DayCalc vs Watch Notes

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

Head to head
About

DayCalc

This app combines a powerful calculator with a comprehensive unit converter. It offers standard, scientific, and fraction calculations, along with over 600 units across 20 categories. Users can customize units, add notes to calculations, and enjoy a visually appealing interface with multiple themes.

Highlights
  • Standard, scientific, and fraction calculator
  • Live voice calculator
  • Add notes to calculations
  • Over 600 units in 20 categories
  • Custom unit creation
  • Automatic currency exchange rate updates
  • 50+ themes and dark mode support
Features
Read full description

DayCalc is an easy to use, beautifully packaged calculator and Unit Converter, includes standard, scientific and fractions calculator, best calculator for your iPad, iPhone and Apple Watch! Calculator: - Live voice calculator - Add notes to history of your calculations, and you can share - Choose between a basic calculator or scientific calculator with more than 30 scientific operations - Use both calculators in portrait or landscape mode (both iPhone and iPad), and split screen support for iPad - Auto adjust height of the history list, no matter how long the calculation process can be displayed in full - Allows locking of calculation history, cannot be deleted and modified after locking - Full watchOS 4 and later support - Support iOS 9 and later spotlight search - Support Dark Mode Unit Converter: - Over 600+ units in 20 categories. - Allows you to add your own unit data, make your own unit converter that meets all your requirements. - Support more than 150 kinds of currency, conversion exchange rate automatic updates - The simplest way to create and use favorite lists. - Add the constant value of your frequently used, it can easily and quickly reused. - Flexible search feature that lets you quickly find what you want the unit and automatically saves your search history. Basic functions: - 50+ beautiful themes for you to choose - View and edit a history of your calculations on the History Panel - Multiple Button sounds, and button sound is mutable URL schemes: HCDayCalc:// Download it now and feel of this calculator is how classic

About

Watch Notes

Quickly access important information like train schedules or notes directly from your Apple Watch. Avoid reaching for your iPhone by viewing text, images, and URLs on your wrist. Data syncs seamlessly from your iPhone.

Highlights
  • View notes and images on Apple Watch
  • Access train timetables
  • Display website URLs as QR codes
  • Sync data from iPhone
  • Action Extension integration
  • Copy and paste functionality
Features
Read full description

Access to urgent information, such as train timetables or notes on your Apple Watch. No need to look for your iPhone in your pocket or bag. You can just check it on your wrist. The app shows text and images clipped with your iPhone, as well as text, images, and URLs loaded from Extension on your Apple Watch. ◎ Usage - Train route search and timetable - Notes that you need to check urgently - Shopping list - ToDos - Flashcards - Notes that you shouldn't forget - Favorite photo - Website URLs that you'd like to recommend to someone ◎ Features - Data is stored on your iPhone. Apple Watch has a simple control focused on viewing. - Supported Extension so it's easy to load data. Of course you are able to copy and paste. - URLs are shown in a QR code on Apple Watch. Use the barcode scanning app on the iPhone to scan the code to open the website. ◎ Integrated with other apps! By using a new Action Extension for iOS 8, the app can show the loaded data on Apple Watch. •Images •Safari •iTunes... and so on ◎ Notes The app can save and show up to 3 entries on Apple Watch. However, you can get an unlimited number of entries through in-app purchases.

Screenshots

DayCalc4 screens
Watch Notes4 screens

Verdict

The call

The clearest difference is review sentiment: DayCalc at 87% against Watch Notes's 47%. DayCalc also leads on rating (4.7 vs 4.3) and update cadence (every 3 weeks vs every 6 weeks). Watch Notes's advantage is ads (none vs shown) and iOS requirement (9.0 vs 15.0). On price, in-app purchases, monetization model 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. DayCalc sells 4 one-off in-app purchases and Watch Notes sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

DayCalc holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: DayCalc has 126 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 87% of DayCalc's written reviews are positive against 47% of Watch Notes's.

UpkeepUpdate frequency

DayCalc ships an update every 3 weeks, Watch Notes every 6 weeks. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

Scorecard6 real differences · 4 level
DayCalc versus Watch Notes: the parameters behind the verdict, then further details
ParameterDayCalcWatch Notes
PriceFreeFree
Rating4.7 (126 ratings) — better4.3 (16 ratings)
Positive reviews87.2% of reviews — better47.4% of reviews
Number of ratings126 — better16
Update frequencyEvery 3 weeks — betterEvery 6 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPod, Apple Watch
Requires iOS15.09.0 — better
Further details — not scored
Size170 MB4 MB
Age rating4+4+
Developer良峰 侯iWare Inc.

Customer experience

DayCalc

All ratings126 ratings
Positive94.4%
Neutral1.6%
Negative4.0%
Written reviews156 reviews
Positive87.2%
Neutral3.8%
Negative9.0%

Watch Notes

All ratings16 ratings
Positive75.0%
Neutral6.3%
Negative18.8%
Written reviews38 reviews
Positive47.4%
Neutral13.2%
Negative39.5%

Bugs and requests

DayCalc

Reported bugs

16 issues
  • Update issues, stuck in update loop
  • Cannot install after removal
  • Weight conversion not showing
  • Keys making sound unexpectedly
  • App not working after professional version update
Show 11 more
  • App crashes after update
  • Stuck on updating forever
  • Calculator results in errors (e.g., 1000*10%)
  • App keeps running in the background, draining battery
  • Cannot change themes due to network error
  • Ads still appear after purchasing ad removal
  • App not opening after install
  • M+ M- bug
  • Text/numbers/symbols have underlines
  • Standard version limits typing to four digits
  • App not starting on Apple Watch

Requested features

10 requests
  • Add Pi button
  • Improve currency conversion navigation
  • iCloud support for syncing across devices
  • Add background running feature
  • Ability to change app icon
Show 5 more
  • Add more theme options
  • Allow notes to show on the main screen
  • Email entire calculation history
  • Change layout (move function buttons)
  • Allow sound to be enabled in silent mode

Watch Notes

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

DayCalc

One-time4
  • Constants Pack$0.99
  • Custom Unit Pack$1.99
  • Remove Ads$3.99
Show 1 more
  • Complete Pack$4.99
1 purchases

Watch Notes

One-time1
  • Unlock entry limit$0.99

Questions

Is DayCalc free?
DayCalc is free to download, with in-app purchases available.
Is Watch Notes free?
Watch Notes is free to download, with in-app purchases available.
Which has better reviews, DayCalc or Watch Notes?
DayCalc is rated higher. DayCalc averages 4.7 out of 5 from 126 ratings, while Watch Notes averages 4.3 from 16 ratings.
Do DayCalc or Watch Notes have ads?
DayCalc shows ads; Watch Notes does not.
Which is updated more often, DayCalc or Watch Notes?
DayCalc ships an update every 3 weeks, and Watch Notes every 6 weeks. Most recently, DayCalc was updated on October 13, 2026 and Watch Notes on October 7, 2026.

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