Comparison

RedCrab Calculator vs Ecall

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

Head to head
About

RedCrab Calculator

This powerful scientific calculator offers a modern UI and robust engine for users of all levels. It handles basic arithmetic to complex engineering equations with smart expression parsing and a high-precision display. Enjoy a seamless calculation experience with features like history recall and dark mode.

Highlights
  • Basic & Advanced Calculations
  • Smart Expression Parsing
  • Calculation History & Reuse
  • High-Precision Display
  • Dark Mode & Modern UI
  • VIP Ad-Free Experience
Features
Read full description

The RedCrab Calculator is an efficient and powerful tool designed for students, engineers, professionals, and everyday users. Whether you're handling simple daily expenses or complex engineering algebra, it provides a precise and lightning-fast calculation experience. Combining an elegant modern UI with a robust calculation engine, every tap is a seamless experience. Key Features: - Basic & Advanced Calculations : Flawlessly supports basic arithmetic alongside advanced scientific functions including trigonometry (sin, cos, tan), logarithms (log, ln), exponents (^), roots (ⁿ√x), and modulo (%). - Smart Expression Parsing : Supports nested parentheses and long expression inputs. It strictly follows mathematical order of operations, displaying exactly what you calculate to ensure accuracy in complex equations. - History & Result Reuse : Automatically saves your calculation history. The dedicated "Ans" button allows you to instantly recall your last answer, making multi-step calculations a breeze. - High-Precision Display : Optimized large number display logic supports showing more significant digits, eliminating the frustration of forced and hard-to-read scientific notation. - Dark Mode & Modern UI : Native support for Dark Mode to protect your eyes. Carefully tuned button layouts, smooth highlight touch feedback, and dynamic font scaling deliver an ultimate user experience. - VIP Privileges : Unlock VIP membership to enjoy a pure, ad-free, immersive calculation experience, along with access to exclusive premium features. Scientific Calculator: Making numbers clearer and calculations smarter.

About

Ecall

Features
Read full description

In a world where digital privacy is shrinking, Ecall puts the power back in your hands. Built from the ground up with a "Security-First" philosophy, Ecall provides an elite calling experience without the eavesdropping.

Screenshots

RedCrab Calculator4 screens
Ecall4 screens

Verdict

The call

The clearest difference is in-app purchases: Ecall at none against RedCrab Calculator's 1. Ecall also leads on ads (none vs shown). RedCrab Calculator's advantage is update cadence (fortnightly vs every 6 weeks) and iOS requirement (15.6 vs 17.0). On price and device support 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. RedCrab Calculator sells 1 one-off in-app purchase. Ecall asks for nothing beyond the download.

UpkeepUpdate frequency

RedCrab Calculator ships an update fortnightly, Ecall every 6 weeks. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard4 real differences Β· 4 level
RedCrab Calculator versus Ecall: the parameters behind the verdict, then further details
ParameterRedCrab CalculatorEcall
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyFortnightly β€” betterEvery 6 weeks
AdsYesNo β€” better
In-app purchasesYesNo β€” better
MonetizationFree with in-app purchasesβ€”
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS15.6 β€” better17.0
Further details β€” not scored
Size5 MB23 MB
Age rating4+4+
Developerε°‘ζ³½ 撁DREAMCORE CREATIONS PTE. LTD

In-app purchases

1 purchases

RedCrab Calculator

One-time1
  • η»ˆθΊ«δΌšε‘˜$1.99
None

Ecall

No in-app purchases

Questions

Is RedCrab Calculator free?
RedCrab Calculator is free to download, with in-app purchases available.
Is Ecall free?
Ecall is free to download, with no in-app purchases.
Do RedCrab Calculator or Ecall have ads?
RedCrab Calculator shows ads; Ecall does not.
Which is updated more often, RedCrab Calculator or Ecall?
RedCrab Calculator ships an update fortnightly, and Ecall every 6 weeks. Most recently, RedCrab Calculator was updated on November 1, 2026 and Ecall on October 31, 2026.

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