Comparison

Fonn Construction vs Block Calculators

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

Head to head
About

Fonn Construction

Streamline construction projects with this field tool designed for contractors and project managers. It enhances efficiency, reduces errors, and facilitates clear communication among team members, all at a competitive cost.

Highlights
  • User-friendly interface
  • Unlimited users and subscriptions
  • Monitored sub-to-sub communication
  • Audit trails and liability protection
  • Real-time drawing access
  • Unlimited data storage
  • Photo and drawing markups
Features
Read full description

Get the job done. Increase efficiency and reduce errors with Fonn Construction. Fonn Construction is a field tool with a high ease-of-use, at a much lower cost than other project management and field tools. We help address issues before they become problems, and help companies save time and money: Contractors and sub-contractors. Project Managers will have access to all functions and will be notified of all activity on their job site, including conversations between contributors. As a contributor you have access to the information you need, with inclusive usability for all tech skill levels. You will always have up to date drawings and will only be notified when issues or tasks pertain to you. You can take part in the project as an architect or an engineer to easily communicate with field workers. • Probably the most user-friendly solution out there • Unlimited users. Unlimited subs. No extra fees. • Sub to sub communication, monitored by you. • Audit trails and liability protection • Current drawings in your pocket. • Unlimited data storage and files. • Photo and drawing markups. • BIM compatible. Still not convinced…? 1. Save time and money Participants communicate directly within the same project, and will be monitored by project managers, ensuring information is up to date 2. Communicate efficiently Easy photo and drawing markups. Avoid misunderstandings and unnecessary inspections. 3. Keep everybody up to date Put all the work plans, files and documents in the pocket of the field professional. Ensure consistent quality through good coordination, communication and access to up to date plans and specs.

About

Block Calculators

Features
Read full description

Introducing Block Calculator, the must-have app for construction professionals, DIY enthusiasts, and anyone involved in building projects. Whether you're planning a new construction, renovating your home, or just curious about materials needed for a project, Block Calculator is here to simplify your workload and streamline the planning process. Key Features: Effortless Block Quantity Estimation: Easily calculate the number of concrete blocks needed for your project based on dimensions, including length, width, and height. Customizable Block Types: Choose from a variety of block types, such as standard concrete blocks, cinder blocks, or specialty blocks. The app adapts calculations accordingly. Precision Measurements: Input measurements in various units, including feet, meters, inches, or centimeters, ensuring flexibility and accuracy in your calculations. Area and Volume Calculations: Calculate the total surface area and volume of your construction project, providing a comprehensive overview of your material requirements. Seamless Project Planning: Plan your project efficiently by estimating the number of blocks needed for walls, foundations, or any other structural element. Cost Estimation: Get an instant estimate of the cost of materials based on current market prices. Save time and budget more effectively. We are committed to providing the best user experience. Expect regular updates with new features, block types, and improvements. Say goodbye to manual calculations and hello to efficiency with Block Calculator. Download the app now and embark on your construction projects with confidence and precision. Build smarter, build better!

Screenshots

Fonn Construction1 screens
Block Calculators4 screens

Verdict

The call

The clearest difference is price: Fonn Construction at Free against Block Calculators's $2.99. Fonn Construction also leads on update cadence (fortnightly vs every 2 months). Block Calculators's advantage is iOS requirement (12.0 vs 16.0). On ads, in-app purchases and device support 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

Fonn Construction is free to download; Block Calculators costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fonn Construction ships an update fortnightly, Block Calculators every 2 months. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

Scorecard3 real differences · 7 level
Fonn Construction versus Block Calculators: the parameters behind the verdict, then further details
ParameterFonn ConstructionBlock Calculators
PriceFree — better$2.99
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyFortnightly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.012.0 — better
Further details — not scored
Size132 MB28 MB
Age rating4+4+
DeveloperFonn ASKantaben Gorasiya

In-app purchases

None

Fonn Construction

No in-app purchases

None

Block Calculators

No in-app purchases

Questions

Is Fonn Construction free?
Fonn Construction is free to download, with no in-app purchases.
Is Block Calculators free?
Block Calculators costs $2.99, with no in-app purchases.
Do Fonn Construction or Block Calculators have ads?
Neither Fonn Construction nor Block Calculators shows ads.
Which is updated more often, Fonn Construction or Block Calculators?
Fonn Construction ships an update fortnightly, and Block Calculators every 2 months. Most recently, Fonn Construction was updated on October 5, 2026 and Block Calculators on October 12, 2026.

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