Best push-to-talk apps for crane crews for crane operators

Q: Can a push-to-talk app show a STOP signal to the whole crew?

OperatorLink shows STOP, HOLD and SLOW to the jobsite crew . STOP releases every held direction on every phone and shows a full-screen alert to everyone else . For Zello, Voxer, GroupTalk and Peak PTT, the cited pages do not state a dedicated stop-signal feature. Ask the vendor what a pressed button does and whether a held direction clears when the connection drops.

Compare push-to-talk apps for crane crews: Zello, Voxer, GroupTalk, Peak PTT, and OperatorLink for crane operators.

By 2Dig · 2026-10-09

2Dig is published by the makers of OperatorLink, which is compared here alongside other tools.

Crane operators need clear voice, a way to stop everyone the moment something goes wrong, and signals that hold until everyone is ready. Options range from phone apps like Zello, Voxer, GroupTalk and OperatorLink to cellular radios like Peak PTT. OperatorLink is currently free to use, and no paid plan is built yet ^[1]. It runs in a phone browser with no app install ^[1]. STOP releases every held direction on every phone and shows a full-screen alert to everyone else ^[1].

Option	Fee	Card fee	Deployment
OperatorLink	Free to use; no paid plan built yet ^[1]	not published	Phone browser, no app install ^[1]
Zello	Zello Work $8.00 per user per month, $6.80 with annual subscription ^[2]; free for first responders ^[3]	not published	iOS, Android, Windows, Mac ^[3]
Voxer	Personal plan free ^[4]; paid tiers not published	not published	Contacts integration with Procore ^[5]
GroupTalk	Fee not published; free 14-day trial ^[6]	not published	Private cloud and on-premises ^[6]
Peak PTT	PTT-84G $229, $19.95 activation, $24.95/mo ^[7]; core service $24.95/mo per radio ^[8]; dispatch seat $12/mo ^[8]	not published	4G LTE radios over AT&T's LTE network ^[7]

What crane operators need from push-to-talk apps for crane crews

Crane operators direct loads from the cab, working with signal persons, riggers and other crew on the ground. The job needs instant spoken direction and a way to stop everyone the moment something goes wrong. Hands are often on the controls, so a call has to start with a single touch and end quickly. A push-to-talk app behaves like a radio: one person talks, the rest hear it at once. For crane work the important parts are clear voice, a fast STOP that reaches the whole crew, and calls that stay live through a full shift. Signals like HOLD and SLOW have to hold until the operator and crew agree it is safe to move again. The crew moves around the jobsite, so coverage has to follow them rather than a fixed base. Battery life, how fast a phone wakes to the app, and how easy it is to join all matter on a busy site. Nobody wants an app that needs setup time under a load. The tools below differ in how they run, what they charge, and what a pressed button does, so the real question is which ones fit a crane crew's daily work.

OperatorLink for crane operators

OperatorLink is made by the team that publishes this site. It shows STOP, HOLD and SLOW to the jobsite crew and passes button presses, chat and voice between phones in a phone browser ^[1]. STOP releases every held direction on every phone and shows a full-screen alert to everyone else ^[1]. HOLD and SLOW stay on for everyone in the jobsite and are cleared when the last person leaves ^[1]. Holding a move button keeps sending that move to the other phones; if it stops arriving for 2 seconds, they drop it ^[1]. One-tap calls such as Go Ahead, Copy That and All Clear are sent as chat messages ^[1]. Anyone who joins can take part in a voice call run from the phone browser ^[1]. The person who starts a jobsite shares a link or QR code ^[1]. A jobsite link stops working 12 hours after the first person joins it ^[1]; a jobsite with nobody in it is wiped after 3 idle hours ^[1]. On Android browsers STOP makes the phone buzz; iPhone Safari ignores the buzz ^[1]. The app can be added to a home screen as a standalone app ^[1]. It runs in a phone browser with no app install ^[1], and is currently free ^[1].

Zello for crane operators

Zello Work costs $8.00 per user per month, or $6.80 with an annual subscription ^[2]. It offers a free 14-day trial with no credit card required ^[2], and education and non-profit organizations get an additional 10% off annual subscriptions for 25% total ^[2]. Zello Enterprise Server can be deployed on-premise ^[3]. Subscriptions can be changed or cancelled any time without penalty ^[2]. Payment by wire transfer, ACH or check is supported besides credit card ^[2]. Where a crew needs a stop signal or a held direction, the page does not state one, so that behavior has to be checked with the vendor.

Voxer for crane operators

Voxer offers a free 14-day trial for business ^[9] and its Personal plan is free ^[4]. The page does not state a price for the paid tiers or a dedicated stop signal, so both have to be checked with the vendor before a crew relies on them.

GroupTalk for crane operators

GroupTalk offers a free 14-day trial ^[6]. Its push-to-talk and personal alarm functionality enables secure, real-time communication across all personnel and workgroups ^[10]. Separate PTT groups can be set up for different roles, functions, areas or tasks ^[10], and group voice channels allow simultaneous communication across multiple teams ^[10]. Personal alarms report incidents immediately to nearby colleagues and central management ^[10], and lone workers can alert nearby colleagues and central resources immediately ^[10]. It integrates live location tracking, alarms and group communication for construction sites ^[10], so supervisors and managers can reach any team or individual instantly ^[10]. NCC, Entry, Veidekke and YIT are named as construction companies that have chosen GroupTalk ^[10]. Where a crew needs a dedicated stop signal or a held direction, check with the vendor.

Peak PTT for crane operators

Peak PTT sells push-to-talk radios rather than a phone app. The PTT-84G is priced at $229, with a $19.95 activation fee and $24.95 per month for unlimited push-to-talk, with no contracts ^[7]. Core radio service is priced at $24.95 per month per radio for unlimited nationwide push-to-talk ^[8], and one flat monthly rate covers it on Tier-1 U.S. carrier networks with 60-second GPS tracking included ^[8]. Both radios include access to the GPS Tracking Portal with 90-day location history, geofencing and real-time crew visibility ^[7], backed by a lifetime hardware warranty with active service ^[7]. The service is described as having sub-300-millisecond latency, no dead zones, no repeaters and no FCC licensing ^[7]. PeakPTT supports multiple simultaneous talk groups on one platform ^[7]. Same-business-day shipping is offered on most orders ^[7].

Matching the tool to the job

Stopping a load when something goes wrong needs a signal that reaches every phone at once. OperatorLink's STOP releases every held direction on every phone and shows a full-screen alert to everyone else ^[1]. Peak PTT describes its service with sub-300-millisecond latency and no dead zones ^[7], so a pressed button reaches the crew fast. Coordinating a lift with a signal person needs clear two-way voice. GroupTalk separates PTT groups by role so riggers, operators and spotters keep their own lines ^[10]. Keeping a HOLD or SLOW until everyone is ready matters at the hook. OperatorLink keeps HOLD and SLOW on for everyone until the last person leaves ^[1]. A lone rigger away from the crane may need a way to call for help. GroupTalk's personal alarms report incidents to nearby colleagues and central management ^[10]. A crew that wants no app install can run OperatorLink in a phone browser ^[1]. Voxer's Personal plan is free ^[4]. The fit depends on whether the job runs on phones, radios or both.

Questions to ask before you choose

Does the service stay live for a whole shift without a drop? A STOP that fails under load puts people at risk, so ask what the maker does when coverage is lost. How does the crew join, and how long does access stay open? Link and QR code joining can be checked before choosing a tool. What does a button press do if a phone drops the connection? Ask whether a held direction clears itself. Is there an alarm for a lone worker, and who hears it? Does the fee cover the whole crew or add per-device cost? For radio services ask about activation, monthly service and whether the warranty needs an active plan. For phone apps ask whether the paid plan is billed per user or per group and how the trial ends. What happens to the jobsite after the shift? Ask whether the room closes and clears itself. Does it run on the phones the crew already has? Ask about Android and iOS behavior, since alert features differ. Where a maker does not publish a fee, get a quote in writing. These questions do not pick a winner; they sort the tools by the site's own conditions.

Frequently asked questions

How much does Zello Work cost per user?

Zello Work costs $8.00 per user per month, or $6.80 per user per month with an annual subscription ^[2]. There is a free 14-day trial with no credit card required ^[2]. Education and non-profit organizations get an additional 10% off annual subscriptions for 25% total ^[2]. Subscriptions can be changed or cancelled any time without penalty ^[2].

What does Peak PTT cost for a radio?

The PTT-84G radio is priced at $229 with a $19.95 activation fee and $24.95 per month for unlimited push-to-talk ^[7]. Core service is $24.95 per month per radio ^[8]. The service carries a lifetime hardware warranty with active service ^[7] and is described as having sub-300-millisecond latency with no dead zones ^[7].

Is OperatorLink free?

OperatorLink is currently free to use, and no paid plan is built yet ^[1]. It runs in a phone browser with no app install ^[1]. The person who starts a jobsite shares a link or QR code for the crew to join ^[1]. A jobsite link stops working 12 hours after the first person joins it ^[1], and a jobsite with nobody in it is wiped after 3 idle hours ^[1].

Can a push-to-talk app show a STOP signal to the whole crew?

OperatorLink shows STOP, HOLD and SLOW to the jobsite crew ^[1]. STOP releases every held direction on every phone and shows a full-screen alert to everyone else ^[1]. For Zello, Voxer, GroupTalk and Peak PTT, the cited pages do not state a dedicated stop-signal feature. Ask the vendor what a pressed button does and whether a held direction clears when the connection drops.

How does GroupTalk handle lone workers on a jobsite?

GroupTalk's personal alarms report incidents immediately to nearby colleagues and central management ^[10], and lone workers can alert nearby colleagues and central resources immediately ^[10]. It integrates live location tracking, alarms and group communication for construction sites ^[10]. It offers a free 14-day trial ^[6], and the paid fee is not published, so the cost has to be checked with the vendor.

OperatorLink is currently free to use, and no paid plan is built yet. ^[1]

Try OperatorLink