Report updated Jun 23, 2026
Units+
For students, engineers, and travelers requiring quick access to unit and currency conversion tools.
Units+ is a market-leading utilities app that is completely free. With a 4.8/5 rating from 372 reviews, it delivers strong user satisfaction. Users particularly appreciate broad utility across diverse conversion categories makes the app essential for international travel and daily tasks, though inconsistent currency conversion data compared to other sources creates uncertainty regarding the accuracy of results remains a common concern.
What is Units+?
Units+ is a utility app for iOS and Android that provides unit and currency conversion across 260+ units and 160+ currencies.
Users hire the app for quick, offline-accessible calculations during travel or study, relying on the persistent session state to avoid re-entering data.
Current Momentum
v4.28 · 5mo ago
Zombie- Last major update November 2025.
- Maintains high rating on iOS.
Active Nemesis
Simple - Unit Converter
By KENTA OKAMURA
Other Rivals
7-Day Rank Pulse 🇺🇸
UtilitiesNo ranking data
Rating Pulse 🇺🇸
Recent User Mood
What makes this app unique?
What Does It Look Like?
Loading...
What Are The Key Features?
Supports 260 units across 22 categories including acceleration, density, and fuel consumption
Real-time conversion for over 160 currencies
Type-ahead search functionality to filter units or categories without scrolling
Save frequently used conversions for immediate access
Advanced input tools including scientific notation, sign changes, and clear-value functions
How much does it cost?
- Free version with no listed IAP or subscription
The app operates as a free utility with no visible monetization gates or subscription tiers.
Who Built It?
Enrichment in progress
Publisher profile available very soon
What other apps does Hebaallah Hossameldien make?
Currency Today
Finance
Gold+
Finance
What do users think recently?
Low confidence · 10 reviews analyzed
How did the latest release land?
What is the recent mood?
Recent user voice shows a thrilled sentiment. Users appreciate broad utility across diverse conversion categories makes the app essential for international travel and daily tasks and persistent state management ensures calculations remain visible even after closing and reopening the application, but report inconsistent currency conversion data compared to other sources creates uncertainty regarding the accuracy of results.
Limited review volume (10 reviews). Sentiment analysis will deepen as more data lands.
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
What is the competitive landscape for Units+?
Where is it available?
Localized markets (1)
How's The Utilities Market?
Market outlook for this category
Available very soon
The rivals identified
Nemeses(1)
This app is the primary market leader in the unit conversion space, directly competing for the same utility-focused user base through high-volume search visibility and feature-rich conversion tools.
Differentiators
- Massive user base and review volume create a significant social proof barrier for new entrants
- Deep integration of engineering and math calculators provides utility beyond standard unit conversion tasks
- Home screen widget support offers superior accessibility compared to the target's current feature set
Head to head
The target should focus on UX speed and niche unit categories to differentiate from the broad, feature-heavy approach of the nemesis.
Contenders(4)
Competes for power users by offering a non-standard unit library and advanced integration features like URL schemes.
Differentiators
- URL scheme support enables power users to integrate conversions into automated workflows and shortcuts
- Today Extension support provides quick access to conversions without launching the full application
A direct functional alternative that focuses on real-time calculation and a broad library of units within the utilities space.
Differentiators
- Real-time calculation engine provides immediate feedback as users input values for faster conversion
- Multi-mode conversion interface allows for comparing multiple units simultaneously within a single view
Targets the same utility category with a focus on multi-category conversion and offline functionality, though currently hampered by poor user ratings.
Differentiators
- Offers theme customization options that allow users to personalize the interface to their preference
- Higher release cadence suggests a more active development cycle for addressing user feedback
Competes directly by offering a similar unit conversion engine and specialized calculators, targeting the same productivity-seeking demographic.
Differentiators
- Includes specialized calculators that extend the app's utility beyond simple unit conversion tasks
- Home screen widget functionality provides a faster path to conversion for frequent power users
Same space(3)
Arthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA.
Provides utility-based file optimization, sharing the same developer and target audience as the other productivity-focused peer apps.
Differentiators
- Provides specific audio compression algorithms that solve storage and sharing pain points for users
- Offline processing ensures reliable performance regardless of the user's current network connectivity status
Arthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA.
A utility-focused peer that provides media conversion services, appealing to the same audience interested in quick, local file transformations.
Differentiators
- Focuses on media-specific conversion tasks like video-to-audio extraction for content creators
- Local processing capability ensures user privacy and functionality without requiring an active internet connection
Arthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA.
Operates in the same utility space, focusing on local media conversion tasks that mirror the target's conversion-centric value proposition.
Compare Units+ against every rival
All rivals in one side-by-side table — identity, store metrics, ratings & sentiment, and strategic intel — plus a head-to-head page for each.
The outtake for Units+
Strengths to defend, gaps to attack
Core Strengths
- Persistent session state maintains calculation context across app launches
- Lightweight UI design reduces cognitive load for casual users
- Scientific notation tools provide advanced utility for technical segments
Critical Frictions
- Lack of home screen widgets limits accessibility vs competitors
- Currency data discrepancies erode trust for financial use cases
- Absence of monetization prevents reinvestment in user acquisition
Growth Levers
- Implement home screen widgets to match competitor accessibility
- Add customizable favorites to increase daily session frequency
- Integrate reliable financial APIs to improve currency conversion accuracy
Market Threats
- Feature-heavy rivals with engineering calculators capture professional segments
- Lack of monetization leaves no budget for user acquisition
- Market consolidation around apps with deep system-level integrations
What are the next best moves?
Ship home screen widgets because users request faster access to conversion tools → increase daily session frequency
Widget integration is the top-requested feature in user feedback.
Trade-off: Pause the scientific notation UI refresh — widget accessibility has higher retention impact.
Audit currency data provider because users report discrepancies vs external sources → restore professional trust
Currency data accuracy is the primary complaint theme from users.
Trade-off: Same-quarter capacity available — no major lever displaced.
A counter-intuitive read
The app's lack of monetization is its greatest risk, as it prevents the marketing spend required to compete with the massive install footprint of the category leader.
Feature Gaps vs Competitors
- Home screen widgets (available in Simple - Unit Converter but missing here)
- Engineering calculators (available in Simple - Unit Converter but missing here)
Key Takeaways
Units+ maintains high user satisfaction through persistent session state, but the lack of widget accessibility and currency data reliability threatens its standing against feature-heavy rivals, so the PM must prioritize widget development to secure daily retention.
Where Is It Heading?
Stable
The utility market is consolidating around apps that offer system-level integration and high-accuracy data. Units+ remains stable due to its lightweight design, but it must address data reliability and accessibility to prevent churn to feature-heavy rivals.
Persistent session state drives high user satisfaction, which provides a stable baseline for future feature expansion.
Currency data discrepancies create trust gaps, which risks losing the professional user segment to more accurate competitors.