Comparison

4 vs Evap Solutions

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

Head to head
About

4

Features
Read full description

Information at your fingertips! This app gives you direct access to your account balance, location and contract information. It also gives you the ability to store and process payment and request service work and deliveries directly through the app.

About

Evap Solutions

This app helps concrete professionals calculate evaporation rates based on weather conditions. It provides guidance to prevent cracks and improve concrete curing for stronger, longer-lasting results. A free trial is available before subscribing.

Highlights
  • Concrete evaporation rate calculation
  • Crack prevention guidance
  • Weather-based adjustments
  • User-friendly interface
  • Moisture control and curing management
Read full description

Evap Solutions – Concrete Evaporation Calculator Helps to detect possibility of shrinkage cracks and crazing with accurate, real-time evaporation rate calculations. Evap Solutions is built for contractors, concrete finishers, and engineers who need fast, reliable data to manage curing conditions and protect concrete quality. Free Trial & Subscription Start with a 7-day free trial with full access to all features. After the trial, continue with an annual subscription. $39.99/year — cancel anytime (at least 24 hours before renewal). Key Features • Imperial & Metric Units Seamlessly switch between unit systems for U.S. and international projects. • Concrete Evaporation Calculator Quickly calculate evaporation rate (surface moisture loss) to guide finishing timing. • Real-Time Weather Data Uses live temperature, wind speed, and humidity for accurate results. • Crack Prevention Helps determine the possibility of plastic shrinkage cracking, crazing, and surface defects. • Fast, Simple Input Enter concrete temperature and get results instantly—no manual formulas needed. • Built for the Field Designed for concrete professionals, job sites, and field use. Evap Solutions helps with: • Concrete curing management • Moisture control • Evaporation rate monitoring • Finishing timing decisions Deliver stronger, more durable concrete while avoiding costly rework. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.1lconcretesolutions.com/private-policy

Screenshots

43 screens
Evap Solutions4 screens

Verdict

The call

The clearest difference is in-app purchases: 4 at none against Evap Solutions's 2. 4 also leads on device support (3 vs 1) and iOS requirement (12.2 vs 17.6). Evap Solutions's advantage is update cadence (every 3 weeks vs every 7 months). On price and ads 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. Evap Solutions sells 2 in-app purchases, starting at $9.99 per month. 4 asks for nothing beyond the download.

UpkeepUpdate frequency

4 ships an update every 7 months, Evap Solutions every 3 weeks. The most recent releases landed on October 16, 2026 and October 18, 2026 respectively.

Scorecard4 real differences · 6 level
4 versus Evap Solutions: the parameters behind the verdict, then further details
Parameter4Evap Solutions
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 7 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Subscription
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.2 — better17.6
Further details — not scored
Size56 MB25 MB
Age rating4+17+
DeveloperRural Computer Consultants, Inc.1L Concrete Solutions

In-app purchases

None

4

No in-app purchases

2 purchases

Evap Solutions

Subscriptions2
  • Monthly Subscription$9.991 Month
  • Annual Subscription7 Days trial$39.991 Year

Questions

Is 4 free?
4 is free to download, with no in-app purchases.
Is Evap Solutions free?
Evap Solutions is free to download, with in-app purchases available.
Do 4 or Evap Solutions have ads?
Neither 4 nor Evap Solutions shows ads.
Which is updated more often, 4 or Evap Solutions?
4 ships an update every 7 months, and Evap Solutions every 3 weeks. Most recently, 4 was updated on October 16, 2026 and Evap Solutions on October 18, 2026.

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