OffDays Alarm vs Namu Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OffDays Alarm
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OffDays Alarm helps you keep recurring alarms active without getting woken up on public holidays or your own custom off days. Choose a supported holiday region, add personal off days, and let the app automatically skip alarms when you do not need them. You can manage alarm time, repeat days, snooze, and labels in one place, making it a practical fit for work schedules, school days, medication reminders, and daily routines. Supported Off-Day Calendars: South Korea, United States, Canada, United Kingdom, Australia, Singapore, Japan, Taiwan, India, China, Hong Kong, Germany, France, Spain
Namu Calculator
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A calculator for everyday use, packed with only the features you need. Switch between four different calculators within a single app. ■General Calculator - Applies standard operator precedence (multiplication and division first) - Supports parentheses, percentages, and sign reversal - Previews the current equation in real time ■Scientific Calculator - Trigonometric functions (sin, cos, tan), inverse trigonometric functions, and hyperbolic functions - Logarithms (ln, log10, log2), exponentials (e^x, 10^x, x^y) - Square roots and cube roots, squaring and cubing, reciprocals, factorials - Pi, e, RAD/DEG angle mode switching, 2nd auxiliary function ■Tax Calculator - Freely adjust VAT rates - View base price, tax amount, and total at a glance ■Currency Converter - Supports major currencies including the Korean won, U.S. dollar, Japanese yen, euro, Chinese yuan, and British pound - Built-in base exchange rates allow for offline use - Real-time exchange rates automatically refresh upon opening the app ■Calculation History - Automatically saves all calculations - Pin frequently used calculations to the top - Swipe to delete unwanted entries No unnecessary ads or registration required—start calculating the moment you open the app.
Screenshots
Verdict
The clearest difference is ads: Namu Calculator at none against OffDays Alarm's shown. Namu Calculator also leads on iOS requirement (17.6 vs 26.0). On price, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | OffDays Alarm | Namu Calculator |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days | — |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 15 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Sung Ahn Kim | KangMin Kim |
In-app purchases
OffDays Alarm
No in-app purchases
Namu Calculator
No in-app purchases
Questions
Is OffDays Alarm free?
Is Namu Calculator free?
Do OffDays Alarm or Namu Calculator have ads?
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