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Time Duration Calculator vs its rivals

Side-by-side comparison against Time Duration Calculator's closest competitors — identity, store metrics, ratings & sentiment, and strategic intel.

Time Duration Calculator
This App
Calculator for iPad!
Nemesis
Ratio & Text Calculator
Contender
Fluid Mechanics Calculator
Contender
Electric Motors Speed Calc
Contender
Dash Calc: Simple Fast Math
Contender
Unit Converter -- All In One
Peer
Calcvier - Keyboard Calculator
Peer
CNVRT: SI Unit Conversion Tool
Peer
Units Converters.
Peer
Core Identity
Developer婷婷 乔7th Gearhideko ogawaV PUGAZHENTHINitrioEnbright LLCFoodmatesss LimitedSergei ShpygarPascal AndraosV PUGAZHENTHI
CategoryEducationUtilitiesUtilitiesUtilitiesUtilitiesUtilitiesUtilitiesUtilitiesUtilitiesReference
PlatformAndroid, iOSiOSiOSiOSiOSiOS, AndroidiOS, AndroidiOSiOSiOS
Store Metrics
Rating5.0 / 54.7 / 54.2 / 54.5 / 54.0 / 55.0 / 54.6 / 54.4 / 54.5 / 54.4 / 5
Ratings Count160,84452183521421818
PriceFreeFreeFree$2.99$2.99$4Free$2.99$4.99$2.99
Release DateJan 24, 2018Jul 30, 2011Nov 2, 2021May 18, 2012Jan 6, 2019Nov 16, 2024Aug 5, 2022Jan 11, 2015Feb 4, 2022Jun 5, 2012
Last UpdatedJan 24, 2018Dec 9, 2020Nov 3, 2021Feb 27, 2025Jan 16, 2026Apr 27, 2026Aug 19, 2022Jan 29, 2026Dec 6, 2023Mar 28, 2023
Sentiment & Reviews
Sentimentmixed---excellentexcellent----
Score52/100---90/10090/100----
Praises----
  • The core application experience provides a satisfying and enjoyable utility for the user base
  • Minimalist design philosophy avoids intrusive advertisements and recurring monthly subscription costs for users
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Complaints----------
Requests----------
Strategic Intel
Strengths
  • Specialized focus on time-duration logic provides a cleaner, less cluttered UX for specific date-math tasks.
  • 75-significant-digit math engine supports professional-grade accuracy requirements
  • Tactile leather-texture UI provides a distinct visual identity on iPad
  • Integrated drawing and notes tab enables hybrid math-and-scratchpad workflows
--
  • Focused interface tuned for motor physics
  • Lightweight footprint avoids calculator bloat
  • Minimalist design philosophy reduces cognitive load for daily math tasks
  • Smart History feature increases utility for recurring financial tracking
  • One-time purchase model builds trust with privacy-focused users
  • Niche 'Microwave Time' category provides specific utility for cooking-focused users.
  • Simple, focused interface reduces cognitive load for rapid, single-task conversions.
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Weaknesses
  • 2.6★ Android rating indicates poor user satisfaction.
  • No paid tier limits revenue potential to ad-inventory.
  • Aggressive subscription prompts for basic features drive negative sentiment
  • Lack of graphing or equation-solving modules limits appeal to STEM students
  • Ad-supported model creates friction compared to ad-free engineering alternatives
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  • Premium tier at $2.99 above free category median
  • Low review volume limits social proof
  • Premium tier at $4.00 above category median
  • No scientific functions restricts addressable market
  • Limited user base restricts organic discovery velocity
  • 0-rating on Android platform indicates lack of user traction.
  • No offline functionality limits utility for travel environments.
  • Absence of advanced math-expression input restricts professional use cases.
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Pricingfreefreemiumfreepaidpaidpaidfreepaidpaidpaid
MomentumZombieZombie---IntenseZombie---
Update Cadence2 versions, ~2033d avg1 versions---5 versions5 versions, 2 majors/6mo, ~3d avg---

Compare Time Duration Calculator head-to-head

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Time Duration Calculator, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

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