Job hazard analysis software › JSA apps
JSA apps for the job site, compared
A JSA app has to do four things at the tailgate: build the JSA on a phone, keep working with no signal, collect every crew member's signature, and send the signed copy on. Most are free to download but built around a paid company plan; Mitti (up to 10 users) and Dozer (one site) are usable free.
Nine JSA apps on the four field tests
| App | Builds the JSA on | No signal | How the crew signs | Copy out | Free to use? |
|---|---|---|---|---|---|
| Safety Reports, Job Safety Analysis | JSA JHA | iPhone, Android | Yes | Signatures captured in the app | PDF by email | Partly a free download its site calls a free version; the JSA module is listed in a quote-priced plan |
| JSA OnTheGo | iPhone, iPad, Android | Yes with a subscription | Every team member reviews and signs before the JSA can be completed; a contact-free option | Signed, timestamped PDF saved to the cloud | No $0.99 a JSA, or $9.99 a month after a 7-day trial |
| Mitti (by SafetyCulture) | iPhone, Android, web | Yes | Signature questions you add to your template | Report shared the moment the inspection is done | Yes up to 10 users and 5 templates |
| Dozer | Phone or desktop browser (no store app yet) | No shows the closest template if the AI can't be reached, but needs a connection to save | One phone passed hand to hand, name and finger signature each | Signed PDF saved to the site, to print or share; no step to email it | Yes one site |
| Gadzoom | Mobile app (App Store) and web | Not stated | Review and sign AHAs in the app; printed signature sheets | Six layouts, with signature sheets | No free trial, then from $149 an AHA |
| HCSS HeavyJob | iPad (JHAs in the HeavyJob app are iPad only) | Yes syncs later | On the tablet at the meeting | To the office through HeavyJob | No quote |
| Field1st | Phone app (App Store) and web; subs and guests by QR code | Yes including voice entry | Crew signs before work; each JHA timestamped and geo-stamped | Signed record in the platform | No quote; subs free |
| HammerTech Mobile | HammerTech Mobile (App Store) and web; built around pre-task plans | Not stated | Crew e-signatures on the pre-task plan | Timestamped, e-signed records for the GC | No quote; subs free |
| SiteDocs | Each worker's own device or a browser | Not stated | Each worker signs under their own login | Signatures and certifications kept per worker | No quote |
The sign-off is the real difference
"Crew signs the JSA" means three different things in these apps, and it decides more about daily use than the hazard library does.
- One device, passed around. The foreman's phone or tablet goes down the line and each person signs on the glass. Nobody else needs an account. Dozer is built this way (name plus finger signature, then "pass the phone"), HCSS does it on the iPad at the meeting, and in Mitti you add a signature question to the template, as many as you need. It's fast at 6:45 a.m.; the catch is that the record is only as honest as the foreman holding the phone.
- Everyone has a login. SiteDocs gives every worker access through their own device or a browser, so each signature sits on that worker's history next to their certifications. That's what a safety department wants after an incident; it's also one more login for every laborer.
- Scan a code. Field1st lets a sub or visitor scan a QR code and complete the same JSA with nothing to install and no seat to buy. HammerTech also lets subs use it free through the GC. This matters most on multi-employer sites, where the subs are most of the people on site.
Whatever the method, OSHA's guide, Job Hazard Analysis (OSHA 3071), puts the value in involving the workers who do the job, not in the signature itself. An app that makes signing take ten seconds also makes it easy to sign without reading. Read the JSA out loud first.
What "free" gets you
Searches for a free JSA app mostly turn up apps that are free to download but built around a paid company plan. Here's what you can use for $0 or close to it:
- Mitti (by SafetyCulture), Free plan: up to 10 users and 5 active templates. You build the JSA yourself as a checklist template, or import your paper form. Premium, $24 a seat a month billed yearly ($29 month to month), adds analytics, integrations and unlimited seats. Mitti pricing
- Dozer, Free plan (a free account): one site, AI-drafted JHAs from the day's task, 59 task templates and 59 toolbox talks, sign-off on one phone, and the crew never pays. A second site needs the Site plan at $99 a site a month. The signed PDF is saved to the site to print or share; Dozer has no step to email it to the GC. It runs in a browser; its App Store and Google Play listings weren't live on November 13, 2026. Dozer pricing
- JSA OnTheGo, on demand: $0.99 for a single JSA, after a 7-day trial with unlimited signed JSAs; or $9.99 a month or $99.99 a year for one user (companies pay A$10 a license a month, five or more).
- Free trials, not free plans: JSABuilder (30 days, then $67 a year for one user, web only), Gadzoom (a free trial, then per AHA) and Mitti Premium (a 30-day trial). Safety Reports' JSA app is a free download its site calls a free version; what it does without a paid plan isn't stated, and the JSA module is listed in a plan priced by quote.
A paper JSA and a phone camera are also free. If one crew repeats the same few tasks, a printed template signed in the truck may be all you need.
Which one for which crew
- A small contractor whose foreman writes a new JHA every morning: Dozer, for the draft from one sentence and the one-phone sign-off, if a browser app is acceptable and you don't need risk scores. JSA OnTheGo or Safety Reports if you want a store app built only for JSAs.
- A company that already runs inspections in a checklist app: Mitti, with your own JSA template.
- Heavy civil crews on HCSS: HeavyJob, on an iPad.
- Federal AHAs signed in the field: Gadzoom.
- Many subs who should sign the same JSA: Field1st or, for a GC, HammerTech.
The apps that draft the JSA for you are compared in JHA builders and AI generators, and the daily version of the form in pre-task plans.
Questions
Is there a free JSA app?
Yes, with limits. Mitti (by SafetyCulture) is free for up to 10 users and 5 active templates if you build the JSA as your own checklist, and Dozer is free for one site, with a free account, for AI-drafted JHAs and crew sign-off in a browser. JSA OnTheGo sells single JSAs for $0.99. Most other JSA apps are free to download but built around a paid company plan.
Can the crew sign a JSA on a phone?
Yes. Dozer and HCSS HeavyJob pass one phone or tablet down the line, JSA OnTheGo won't complete a JSA until every team member has signed, Mitti uses signature questions in the template, SiteDocs gives each worker a login, and Field1st lets subs and guests sign through a QR code.
Do JSA apps work without cell service?
Safety Reports, Mitti, HCSS HeavyJob and Field1st say their apps work offline, and JSA OnTheGo does with a subscription. Dozer shows its closest built-in template when its AI can't be reached, but its browser app needs a connection to save. The other makers' pages don't say.
About this page
This page is published by Winding AI, Inc., the company that makes Dozer, one of the tools named here. We earn nothing from links to other tools, and links to Dozer carry a tag so Dozer can count visits from this page. If a fact here is wrong, write to support@winding.ai and we'll fix it.