Comparison

Calc ± Smart Widgets vs Big Clock

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

Head to head
About

Calc ± Smart Widgets

Features
Read full description

Calc ± Smart Widgets One app. Every calculation. Calc replaces a dozen single-purpose apps with 25+ beautifully designed calculators and converters — all one tap away. WHY PEOPLE LOVE CALC - Everything in one place — no more switching between apps - Clean, distraction-free design that's a joy to use - Interactive home screen widgets for instant answers - Works beautifully on both iPhone and iPad - Choose your number format: Indian (10,00,000), Western, European, or East Asian FINANCE CALCULATORS - EMI Calculator — plan loans with confidence - SIP Calculator — project your investment growth - GST Calculator — add or subtract tax instantly - VAT Calculator — quick tax breakdowns - Percentage, Discount & Tip calculators for everyday math SMART CONVERTERS - Currency Converter with live rates - Length, Weight, Volume, Area & Temperature - Speed, Pressure, Energy, Force & Power - Number systems — Binary, Octal, Decimal, Hexadecimal - Timezones & Data storage units MADE FOR YOUR WORKFLOW - Pick your default tool — open straight into the calculator you use most - Set default units once, convert faster forever - Sound & haptic feedback you can toggle - Optimized sidebar navigation on iPad GO PRO Unlock all calculators, premium interactive widgets, and calculation history with Calc Pro. Start with a free trial — cancel anytime. Whether you're planning a loan, splitting a bill, converting units for work, or checking exchange rates before a trip — Calc gives you the answer in seconds. Download Calc today and carry every calculator in your pocket. If you face any technical challenges or have any suggestions or feedback,  Feel free to contact us at info@hkinfoway.com . Privacy Policy: https://calc.wallzy.app/privacy-policy

About

Big Clock

Transform your device into a large, clear digital clock. Ideal for bedside tables, desks, or workouts, it offers an always-on display with customizable themes and brightness for easy readability in any environment.

Highlights
  • Fullscreen digital clock
  • Always-on display mode
  • Light and dark themes
  • Brightness control
  • Portrait and landscape support
  • Minimal design
Features
Read full description

Big Clock turns your iPhone or iPad into a clean, easy-to-read digital clock that stays visible when you need it most. Use it as a bedside night clock, desk clock, workout clock, or minimal always-on clock during work and study. Designed for simplicity, readability, and focus. FEATURES • Big fullscreen digital clock • Always-on display mode • Optional seconds display • Light and dark themes • Brightness control • Fullscreen mode • Works in portrait and landscape • One tap controls • Minimal and distraction-free design • Supports iPhone and iPad PERFECT FOR • Bedside nightstand clock • Desk setup clock • Kitchen clock • Study sessions • Work focus • Workout sessions • Low-light environments • Time visible from a distance Big Clock launches instantly and keeps the time clearly visible from across the room.

Screenshots

Calc ± Smart Widgets4 screens
Big Clock4 screens

Verdict

The call

The clearest difference is update cadence: Calc ± Smart Widgets at daily against Big Clock's weekly. On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Calc ± Smart Widgets sells 2 in-app purchases, starting at $1.99 per month and Big Clock sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Calc ± Smart Widgets ships an update daily, Big Clock weekly. Both last shipped on October 24, 2026.

Scorecard1 real difference · 9 level
Calc ± Smart Widgets versus Big Clock: the parameters behind the verdict, then further details
ParameterCalc ± Smart WidgetsBig Clock
PriceFreeFree
Rating—4.7 (6 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—6 — better
Update frequencyDaily — betterWeekly
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size55 MB74 MB
Age rating+44+
DeveloperHKinfoway TechnologiesNataliia Zarudna

In-app purchases

2 purchases

Calc ± Smart Widgets

Subscriptions2
  • Calc ± Pro Monthly3 Days trial$1.991 Month
  • Calc ± Pro Yearly14 Days trial$12.991 Year
7 purchases

Big Clock

One-time7
  • Coffee Support$1.99
  • Premium$2.99
  • Premium + Coffee$4.99
Show 4 more
  • Coffee & Croissant Support$5.99
  • Premium + Coffee + Croissant$8.99
  • Big Support$12.99
  • Premium + Big Support$14.99

Questions

Is Calc ± Smart Widgets free?
Calc ± Smart Widgets is free to download, with in-app purchases available.
Is Big Clock free?
Big Clock is free to download, with in-app purchases available.
Do Calc ± Smart Widgets or Big Clock have ads?
Neither Calc ± Smart Widgets nor Big Clock shows ads.
Which is updated more often, Calc ± Smart Widgets or Big Clock?
Calc ± Smart Widgets ships an update daily, and Big Clock weekly. Most recently, Calc ± Smart Widgets was updated on October 24, 2026 and Big Clock on October 24, 2026.

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