Comparison

Fonn Construction vs Cornerstone.Network MyLocken

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

Cornerstone.Network MyLocken

Manage site access and book resources with this application. Users can submit notifications of work, view site information, and report issues. It also facilitates key management and updates.

Highlights
  • Raise Notification of Work (NOW)
  • Book site access
  • View site access and hazard information
  • Report site issues
  • Sync and update keys
Features
Read full description

Functionality of the latest release includes: * Ability to raise a Notification of Work (NOW) allowing users to book access to site with relevant work detail * Clear and concise site access and hazard information available to view * Book on and off site and report any issues * Sync/update keys with pool key functionality

Screenshots

Fonn Construction1 screens
Cornerstone.Network MyLocken4 screens

Verdict

The call

The clearest difference is update cadence: Fonn Construction at fortnightly against Cornerstone.Network MyLocken's every 5 months. On price, review sentiment, 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.

UpkeepUpdate frequency

Fonn Construction ships an update fortnightly, Cornerstone.Network MyLocken every 5 months. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

Scorecard1 real difference · 9 level
Fonn Construction versus Cornerstone.Network MyLocken: the parameters behind the verdict, then further details
ParameterFonn ConstructionCornerstone.Network MyLocken
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings4 — better—
Update frequencyFortnightly — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015 — better
Further details — not scored
Size132 MB12 MB
Age rating4+4+
DeveloperFonn ASLocken Services

Customer experience

Fonn Construction

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Cornerstone.Network MyLocken

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Fonn Construction

No in-app purchases

None

Cornerstone.Network MyLocken

No in-app purchases

Questions

Is Fonn Construction free?
Fonn Construction is free to download, with no in-app purchases.
Is Cornerstone.Network MyLocken free?
Cornerstone.Network MyLocken is free to download, with no in-app purchases.
Do Fonn Construction or Cornerstone.Network MyLocken have ads?
Neither Fonn Construction nor Cornerstone.Network MyLocken shows ads.
Which is updated more often, Fonn Construction or Cornerstone.Network MyLocken?
Fonn Construction ships an update fortnightly, and Cornerstone.Network MyLocken every 5 months. Most recently, Fonn Construction was updated on October 24, 2026 and Cornerstone.Network MyLocken on October 15, 2026.

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