Comparison

Rebar Calc vs Concrete Evap

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

Head to head
About

Rebar Calc

This app simplifies concrete and rebar calculations for construction projects. It helps estimate rebar tonnage, mesh quantities, and concrete volume, and can even provide quotes for materials.

Highlights
  • Rebar tonnage calculation
  • Sheet and roll mesh estimation
  • Concrete volume estimator
  • Material quote generation
  • Adjustable lap amount
  • Configurable rebar/mesh size
Features
Read full description

Rebar Calc is your all-in-one solution for rebar and concrete calculations. Whether you need to determine the tons and linear feet of rebar, sheets of sheet mesh, or rolls of roll mesh required for your concrete project, Rebar Calc has you covered. Tailor your calculations by configuring the necessary lap amount, and selecting the size of rebar, sheet mesh, or roll mesh to suit your specific needs. Rebar Calc also features a fast and easy concrete volume estimator in cubic yards. Quickly figure out how many bags of grout, fast-setting concrete, and other materials you'll need for slabs or concrete cores. Plus, with just a tap, you can get a quote on rebar, mesh, and other concrete supplies. Simplify your construction planning with Rebar Calc, the essential tool for every concrete job. These calculations are for estimating purposes only. All final figures should be verified by a professional before quoting, purchasing, or installing materials.

About

Concrete Evap

This tool helps construction professionals assess the risk of plastic shrinkage cracking in concrete. It analyzes real-time weather data to calculate evaporation rates and provides a risk assessment, enabling preventative measures for better concrete quality.

Highlights
  • Plastic shrinkage crack risk assessment
  • Real-time weather data analysis
  • Evaporation rate calculation
  • Risk assessment for concrete quality
  • On-site decision making
Features
Read full description

Concrete Eval is a specialized tool designed for construction professionals to assess the risk of plastic shrinkage cracking in concrete due to environmental conditions. By analyzing real-time weather data—including concrete and air temperatures, wind speed, and humidity—the app calculates the evaporation rate and provides a risk assessment. This empowers you to implement appropriate measures, such as using windbreaks or surface coverings, to ensure the quality and durability of your concrete work. Why Choose Concrete Eval? Concrete Eval is specifically developed for construction professionals who need to make quick, informed decisions on-site regarding concrete curing conditions. By providing immediate risk assessments based on current weather data, the app helps prevent costly repairs and ensures the structural integrity of your projects. Note: Always consider local guidelines and consult with experts when implementing protective measures for concrete work.

Screenshots

Rebar Calc4 screens
Concrete Evap4 screens

Verdict

The call

The clearest difference is update cadence: Rebar Calc at every 2 months against Concrete Evap's every 20 months. Rebar Calc also leads on ratings volume (643 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Rebar Calc against 5.0 for Concrete Evap. That said, the two scores are not equally well evidenced: Rebar Calc has 643 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Rebar Calc ships an update every 2 months, Concrete Evap every 20 months. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 8 level
Rebar Calc versus Concrete Evap: the parameters behind the verdict, then further details
ParameterRebar CalcConcrete Evap
PriceFreeFree
Rating4.9 (643 ratings)5.0 (1 ratings) — better
Positive reviews60.0% of reviews—
Number of ratings643 — better1
Update frequencyEvery 2 months — betterEvery 20 months
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supportedAd-supported
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.0 — better18.2
Further details — not scored
Size13 MB6 MB
Age rating4+4+
DeveloperAppco LLC (USA)Chad Wallace

Customer experience

Rebar Calc

All ratings637 ratings
Positive96.9%
Neutral1.6%
Negative1.6%
Written reviews5 reviews
Positive60.0%
Neutral0.0%
Negative40.0%

Concrete Evap

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Rebar Calc

No in-app purchases

None

Concrete Evap

No in-app purchases

Questions

Is Rebar Calc free?
Rebar Calc is free to download, with no in-app purchases.
Is Concrete Evap free?
Concrete Evap is free to download, with no in-app purchases.
Which has better reviews, Rebar Calc or Concrete Evap?
Concrete Evap is rated higher. Rebar Calc averages 4.9 out of 5 from 643 ratings, while Concrete Evap averages 5.0 from 1 ratings.
Do Rebar Calc or Concrete Evap have ads?
Both Rebar Calc and Concrete Evap show ads.
Which is updated more often, Rebar Calc or Concrete Evap?
Rebar Calc ships an update every 2 months, and Concrete Evap every 20 months. Most recently, Rebar Calc was updated on November 6, 2026 and Concrete Evap on November 4, 2026.

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