Report updated Jun 22, 2026
Rebar Calc
For concrete construction professionals and contractors requiring quick material estimates and procurement quotes.
Rebar Calc is a well-regarded utilities app that is completely free. With a 4.9/5 rating from 599 reviews, it maintains solid user satisfaction.
What is Rebar Calc?
Rebar Calc is a construction utility app for iOS that calculates rebar, mesh, and concrete volume requirements for contractors.
Users hire this tool to reduce the time spent on manual material takeoffs during concrete projects, ensuring accurate ordering without complex desktop software.
Current Momentum
v3.0 · 4mo ago
Zombie- Maintains high user trust ratings.
- Ships standard utility updates.
Active Nemesis
Rebar Grid Calculator
By H3 Apps
Other Rivals
7-Day Rank Pulse 🇺🇸
UtilitiesNo ranking data
Rating Pulse 🇺🇸
Recent User Mood
What makes this app unique?
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What Are The Key Features?
Calculates tons and linear feet of rebar, sheet mesh, and roll mesh with configurable lap, size, and spacing parameters.
Calculates volume in cubic yards or meters for slabs and concrete cores, including a bag calculator for specific mixes like Quikrete.
One-tap interface to request quotes on rebar, mesh, and concrete supplies.
Includes support for European and Canadian rebar standards alongside imperial and metric units.
How much does it cost?
- Free
The app operates as a free utility tool, likely serving as a lead generation mechanism for the developer's broader industrial product and consulting services.
Who Built It?
Enrichment in progress
Publisher profile available very soon
What other apps does Appco LLC (USA) make?
What do users think recently?
High confidence · Latest 100 of 599 total reviews analyzed
How did the latest release land?
What is the recent mood?
Recent user voice shows a excited sentiment.
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 Rebar Calc?
Where is it available?
Localized markets (1)
How's The Utilities Market?
Market outlook for this category
Available very soon
Which niche is Rebar Calc in?
to calculate concrete and rebar material requirements
Explore the full Construction Estimation Calculators niche
Every app in this space — 5 tracked, the niche's live rankings, and Marlvel's editorial take on the job-to-be-done.
The rivals identified
Nemeses(1)
This app directly competes for the same construction professional audience by focusing exclusively on rebar grid estimation and unit conversion.
Differentiators
- Offers integrated unit conversion tools that simplify international project planning for construction contractors
- Provides a dedicated result-sharing feature that allows users to export calculations directly to project stakeholders
Head to head
The target app should leverage its broader material support to capture users who need a comprehensive toolkit, while monitoring the nemesis for potential feature-creep into mesh calculations.
Contenders(1)
While focused on aluminum windows, this app competes for the same industrial estimation market by offering automated material takeoff and reporting.
Differentiators
- Includes advanced material optimization logic that reduces waste in custom fabrication projects
- Features robust reporting and export capabilities that cater to professional project management workflows
Same space(4)
Orenda serves the professional trade industry by providing specialized chemical and volume calculators for pool maintenance.
Differentiators
- Integrates directly with industry-specific educational platforms like Orenda Academy to drive user retention
- Combines technical calculation tools with a loyalty rewards program to incentivize long-term app usage
This app occupies the same 'pro-tool' utility space, providing highly technical field calculations for a specialized professional user base.
Differentiators
- Maintains a comprehensive, frequently updated database of camera formats that serves as an industry standard
- High release cadence ensures compatibility with the latest hardware and OS-level performance optimizations
This utility app targets the same 'on-site calculation' use case, providing specialized math for heavy equipment and vehicle maintenance.
Differentiators
- Offers terrain-specific optimization modes that provide more accurate data than generic utility calculators
- Provides dual-mode calculation interfaces to support both quick estimates and advanced technical requirements
Angle Meter is a direct utility competitor for construction and DIY professionals needing precision measurement tools on the job site.
Differentiators
- Utilizes camera integration for real-time image analysis, allowing for measurements of physical objects in situ
- Provides a real-time visual display that assists users in leveling and angle verification tasks
New entrants(2)
This newcomer targets the same construction estimation demographic by focusing on material takeoffs for roofing projects.
Differentiators
- Includes a specialized pitch gauge tool that simplifies complex roof slope calculations for contractors
MKS Beton enters the construction utility space by combining material calculation with commercial inquiry systems for concrete.
Differentiators
- Features a bilingual interface that expands the potential market reach to international construction teams
Compare Rebar Calc 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 Rebar Calc
Strengths to defend, gaps to attack
Core Strengths
- High user trust evidenced by 599 ratings
- Broad material support including sheet and roll mesh
Critical Frictions
- No cloud-sync for project data
- Manual quote request process lacks automated vendor response
Growth Levers
- Integrate direct project-sharing workflows
- Add camera-based measurement tools for physical site verification
Market Threats
- Competitor focus on result-sharing features
- New entrants with bilingual support for international teams
What are the next best moves?
Ship project-sharing export functionality because competitors offer direct stakeholder sharing → increase user retention
Competitor analysis shows Rebar Grid Calculator gains an advantage through result-sharing features.
Trade-off: Deprioritize the planned UI refresh for the calculator interface.
A counter-intuitive read
The app's lack of aggressive monetization is its primary moat, as it keeps the tool lightweight and trusted for professional contractors who avoid ad-heavy alternatives.
Feature Gaps vs Competitors
- Result-sharing export (available in Rebar Grid Calculator)
- Camera-based measurement (available in Angle Meter)
Key Takeaways
Rebar Calc holds a strong reputation for estimation accuracy but lacks the collaborative features required for modern construction workflows, so the PM should prioritize project-sharing to prevent churn to more integrated competitors.
Where Is It Heading?
Stable
The construction utility market is shifting toward integrated project management, where standalone calculators are becoming secondary to collaborative tools. Rebar Calc remains stable due to its high trust, but it risks becoming a legacy tool if it fails to connect with broader project workflows.
The app maintains a stable rating, but the lack of new features suggests it is not competing for new market share.
Competitors are adding collaborative features, which will eventually erode the utility of a standalone, non-connected calculator.