Rebar Grid Calculator is a construction utility for estimating rebar requirements on concrete slabs, available as a paid app on iOS.
The App DNA
What makes this app unique?
Users hire this app to automate material estimation for concrete projects, replacing manual calculations with a digital tool that supports both imperial and metric units.
For Construction professionals and DIY builders requiring precise material estimates for concrete slab reinforcement.
What does it look like?
Key features
Calculates required rebar quantity based on slab dimensions, edge spacing, and grid spacing.
Supports input and output in both imperial and metric units.
Exports calculated grid requirements via text or email.
How much does it cost?
Paid model at $1.99 USD per download, targeting professional and DIY construction users with a one-time utility fee.
Velocity
Steady developmentShow more...
Who built it?
H3 Apps
13+ apps tracked · Business
Cattle Weight Estimator
Bidding Jobs
Electric Wire Estimator
Bond Investing
Wastewater Manager
Soybean Yield Estimate
Pump Design Calculator
Trigonometry Identities Proofs
Credit Cards Payoff
Pipe Expansion Calculator
Goat / Sheep Weight Estimator
MistingUser Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for Rebar Grid Calculator
How's the Business market?
Rebar Grid Calculator holds the #78 Paid position in the US construction category. The lack of updates since Feb 2021 relative to active competitors signals a maintenance-mode posture that risks long-term professional relevance.
Read the market outlookThe rivals identified
By Appco LLC (USA)
This app occupies the exact same niche as this app, offering a specialized toolset for rebar reinforcement calculations with a significantly larger user base.
- Provides a dedicated, single-purpose interface for rebar reinforcement that minimizes user cognitive load during site work.
- Maintains a high-frequency update cycle to ensure compatibility with the latest iOS hardware and OS standards.
- Focuses exclusively on the construction professional's workflow rather than general-purpose business or utility calculations.
Unlock the head-to-head verdict: where this rival wins, and where it loses.
Access the full report for freeThe Analyst's Read
Key takeaways for Rebar Grid Calculator
Where is it heading?
The construction utility market is consolidating around suite-based tools that offer broader formula libraries and consistent OS compatibility. Rebar Grid Calculator remains exposed due to its stagnant release cadence, so revenue growth will likely stall unless the developer commits to a modern update cycle.
- The lack of updates since Feb 2021 signals a maintenance-mode posture, which erodes professional trust and invites churn to more active competitors.
The SWOT
- Unified calculation flow supports imperial and metric units in one interface.
- Result sharing via text or email integrates into professional project workflows.
- Add advanced slab reinforcement formulas to compete with broader construction suites.
- Implement cloud-sync for project estimates to increase professional lock-in.
Next best moves
Ship compatibility update because the app has not been updated since Feb 2021 → restore professional trust.
The counter-intuitive read
The app's narrow focus is not a weakness but a potential moat…
Read the full takeFeature gaps
Comprehensive construction formula library (available in BuildCalc but absent here) +1
Since the last report: The report shifted from a basic feature list to a critical competitive analysis, highlighting the risk of abandonment due to the lack of updates since February 2021.
Bottom line
The app provides a clean, specialized utility for slab reinforcement, but its lack of updates since 2021 makes it a risky choice for professional users, so the PM must prioritize a maintenance refresh to restore trust.
Unlock 2 critical frictions, 2 market threats and the analyst’s take.
Access the full report for freeReport last updated