Comparison

Math Simply vs Digital Clock

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

Head to head
About

Math Simply

This app offers a simple, ad-free calculator with a home screen widget for quick calculations. It also includes a comprehensive unit converter and extensive personalization options. Future updates are included with a one-time purchase.

Highlights
  • Home screen widget calculator
  • Unit converter (100+ units)
  • Cache memory function
  • User-friendly hints
  • Global localization
  • Personalization options
  • One-time purchase for life
Features
Read full description

NO Advertising, Math Simply is an easy-to-use calculator with a minimalist design that allows users to place the calculator on the Home Screen of their iOS or macOS device to perform calculations directly without opening the app itself. The widget calculator has an almost identical calculation experience to the main APP. Version 2.0.0 introduces a brand-new unit converter feature, offering conversions for over 100 units across 10 categories, with more content to be added in future updates. It has the following features: 1. Easy-to-use interface – has the same design interface as the traditional calculator, simple and clear. 2. Has almost the same widget calculation experience as the main program (the widget calculator only lacks the cache memory function). 3. Adopts the cache memory function and provides four cache operation buttons, which is convenient for diversified calculations. 4. User-friendly hints – hints for “Previous Result”, “current operator” and operation status during calculations. 5. Global Localization – Math Simply not only supports 12 languages, but also provides globalization support, whether you are used to using “.” or “,” as a decimal point, or “,” or “‘” as a thousands separator, Math Simply adapts to your needs in real time. 6. Personalization – For display modes, button vibration, button shapes and colors, and even display fonts, Math Simply offers adjustments to provide a variety of personalized settings. 7. Unit Converter - Quick and intuitive unit conversions, with customizable precision control. 8. Future Upgrades – Math Simply is a one-time purchase and download for life, with access to all future upgrades (including more convenient calculation features). Math Simply currently supports all iPhone and iPad devices with iOS 17 installed. In addition, thanks to the characteristics of the M series chips, Mac with Apple Silicon chips can also install this app and use the Widget Calculator function. In the near future, Math Simply will also add more convenient features, aiming to help users calculate more conveniently. Thank you for your support!

About

Digital Clock

Transform your device into a retro LED digital clock with a dot matrix design. Offers multiple time formats, vibrant color options, and a full-screen display. Ideal for bedside tables, desks, or any space needing an elegant timepiece.

Highlights
  • Authentic dot matrix design
  • Multiple time formats (12/24 hr, seconds on/off)
  • 6 vibrant LED color options
  • Full-screen display
  • Optimized for all iPhones and iPads
  • Simple tap-to-access settings
Features
Read full description

Transform your iPhone or iPad into a stunning retro LED display with this beautifully crafted digital clock app. Experience Nostalgic Digital Beauty Relive the classic era of LED displays with our authentic dot matrix design. Each number is rendered using hundreds of individual glowing dots, creating that iconic retro aesthetic that defined the digital age. Perfect for Any Space Whether it's your bedside table, kitchen counter, or office desk, this full-screen clock turns your iPhone or iPad into an elegant timepiece that's both functional and decorative. Features: Multiple Time Formats - Switch between 12-hour and 24-hour display - Toggle seconds on/off (HH:MM:SS or HH:MM) Beautiful Color Options - Choose from 6 vibrant LED colors: Yellow, Green, Cyan, Orange, Red, and Purple - Each color captures the authentic glow of classic LED displays Optimized for All iPhones and iPads - Automatically adjusts dot size for perfect viewing on iPad Mini, iPad Air, and iPad Pro - Crisp, clear display in both portrait and landscape orientations Simple Controls - Tap anywhere on the screen to access settings - Clean, intuitive interface that doesn't distract from the clock - Settings panel matches the retro dot matrix aesthetic Perfect for Any Time - Full-screen display with hidden status bar for distraction-free viewing - Ideal as a bedside clock, desk accessory, or ambient display - Low power consumption for extended use Why You'll Love It: The carefully crafted dot matrix rendering creates an authentic retro experience that's both nostalgic and modern. Each glowing dot is perfectly sized and spaced to recreate the classic LED displays you remember, while taking advantage of your iPad's beautiful screen. Transform your iPad into a piece of retro-futuristic art that tells time beautifully. Download Digital Clock - LED Retro today and bring the golden age of digital displays to your space.

Screenshots

Math Simply4 screens
Digital Clock4 screens

Verdict

The call

The clearest difference is price: Digital Clock at Free against Math Simply's $1.99. Digital Clock also leads on update cadence (every 5 days vs every 2 months). On review sentiment, 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

Digital Clock is free to download; Math Simply costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Math Simply ships an update every 2 months, Digital Clock every 5 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
Math Simply versus Digital Clock: the parameters behind the verdict, then further details
ParameterMath SimplyDigital Clock
Price$1.99Free — better
Rating—4.9 (8 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings—8 — better
Update frequencyEvery 2 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.1
Further details — not scored
Size4 MB4 MB
Age rating4+4+
Developer振捷 周SeungJun Lee

Customer experience

Math Simply

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Digital Clock

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Math Simply

No in-app purchases

None

Digital Clock

No in-app purchases

Questions

Is Math Simply free?
Math Simply costs $1.99, with no in-app purchases.
Is Digital Clock free?
Digital Clock is free to download, with no in-app purchases.
Do Math Simply or Digital Clock have ads?
Neither Math Simply nor Digital Clock shows ads.
Which is updated more often, Math Simply or Digital Clock?
Math Simply ships an update every 2 months, and Digital Clock every 5 days. Most recently, Math Simply was updated on November 3, 2026 and Digital Clock on October 30, 2026.

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