OnSiteForm vs William Hackett App
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
OnSiteForm
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OnSiteForm is a Site Inspection System that enables inspectors to save time when conducting inspections and provides an online asset inspection status history for the assets registered, meeting statutory requirements. OnSiteForm is utilised to conduct inspections on remote sites where there is no Internet connection, with inspection details uploaded when an internet connection becomes available. OnSiteForm maintains asset details and inspection history across multiple sites, giving users visibility to information according to the user authorisation granted. To try out our app, you can login into our demo account using: Username: demo Password: demo A trial can be set up with your own account details if requested. Key features: - Asset can be added or copied from another asset. - Assets are custom created or created using standard product and units of measure. - Multi-level locations can be used - Pre-defined inspection status and inspection types can be used - Online certificates and reports are available to authorised users - Easy-to-use navigation and controls - Inspections can be carried out remotely from an internet connection and synced when available. - The site to be inspected can be selected only if the logged in user has authority to use it.
William Hackett App
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The William Hackett App Totally re-written to provide an essential suite of tools to those working in the lifting and hoisting fields. RFID Scanning. Scan William Hackett products in the field using your mobile phone to access data on that individual item such as its Declaration of Conformity Certificate containing itβs serial number, item code, working load limit and date of manufacture. In addition to essential information such as safe use instructions available at the press of a button, wherever you are. Sling Calc. William Hackett Sling Calc is part of the new William Hackett app that lets you configure your chain sling by taking you through a number of steps. Once completed, the sling specification can be viewed along with a 3D image of exactly how the sling will look. A part code for the sling is generated and by hitting βrequest quoteβ you can have a quote emailed to yourself instantly. This key feature is great for when working on site. Once you have the app downloaded, please fill out your details in the account settings and create an account for free. This account will also provide you access to members content on the William Hackett website (https://www.williamhackett.co.uk) such as CAD file downloads. Updated version: Revised design and performance fixes. Now supports both Imperial and Metric measurements, offers pricing in GBP, USD and Euros. Find these options in your Account Settings. The Sling Calc will take you through the following steps: - Product selection β Choose between grade 8, grade 10 or auto. If auto is selected, the app will work out the cheapest option for you based on the sling specification. - How many legs β Select how many legs you require on your sling. - Weight of load β Input the weight of the load to be lifted by the sling. - Headroom β Select whether headroom is restricted or not. If yes is selected, then sling rating will be 45Β°-60Β°. If no is selected, the sling will be rated from 0Β°-45Β°. - Leg length β Do you know the nominal leg length? If yes, simply input the length. If no, use the diagram to help you and input the distance between the lifting points. The sling calculator will then work out the required leg length. (note β all sling configurations are to the full meter, therefore slings may be rounded up). - Terminations β Select shortening device (if any) and lower termination. You will then be given a summary page, where it will list your requirements. This is what you have entered into the calculator. It will also give you a sling specification, this is the sling that the calculator has generated for you based on your requirements. A part code, sling description, RRP and 3D image is also visible on this page. Request quote will email your sling specification and quote to the email address entered in account settings. You can view old quotes by selecting βretrieve existing quoteβ from the dashboard. You can also change your account settings from here.
Screenshots
Verdict
OnSiteForm and William Hackett App are too close to call on the numbers: across 6 compared parameters β price, update cadence, ads and in-app purchases among them β neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OnSiteForm ships an update every 3 months, William Hackett App every 4 months. The most recent releases landed on September 12, 2026 and September 10, 2026 respectively.
| Parameter | OnSiteForm | William Hackett App |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months β better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 β better | 12.2 |
| Further details β not scored | ||
| Size | 26 MB | 124 MB |
| Age rating | 4+ | 4+ |
| Developer | Formability Ltd | Lazy Grace Limited |
In-app purchases
OnSiteForm
No in-app purchases
William Hackett App
No in-app purchases
Questions
Is OnSiteForm free?
Is William Hackett App free?
Do OnSiteForm or William Hackett App have ads?
Which is updated more often, OnSiteForm or William Hackett App?
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