Comparison

CallingTree vs ICG Events

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

Head to head
About

CallingTree

Facilitates emergency communications and business continuity for teams. Provides offline access to critical information, mass messaging capabilities, and staff check-ins for safety monitoring.

Highlights
  • One-touch emergency communications
  • Offline access to business continuity plans
  • Mass broadcast messaging (Push, SMS, Voice)
  • On-the-fly communication creation and tracking
  • Staff check-in for safety monitoring
  • Bespoke calling cascades
  • Document delivery and updates
Features
Read full description

The Calling Tree puts emergency communications and business continuity information directly into the hands of your people. Send urgent communications to individuals, teams or your entire organisation using Push, SMS and Voice, with responses tracked so you can quickly see who has received and responded to a message. Messages can be prepared in advance through the secure web administration system or created directly within the app when an incident occurs. Flexible access levels allow authorised users across the organisation to communicate with the people and teams they are responsible for. Staff can check in during an incident, giving managers an immediate view of who is safe, who is available and who may need assistance. Each user has access to their own calling tree or call cascade, clearly showing who they are responsible for contacting and who is responsible for contacting them. Business continuity plans, emergency procedures, documents, maps and disaster recovery information can be distributed directly to users and centrally maintained by administrators. Crucially, key information is stored securely on the device, so essential plans and contact information remain available even when network connectivity is disrupted. Organisations can also allow users to maintain their own emergency contact details and communication preferences, with optional consent controls where required. The Calling Tree helps organisations communicate faster, account for their people and keep critical information available when normal operations are disrupted.

About

ICG Events

Features
Read full description

The app is a container for ICG Events, providing up-to-date information and engagement to attendees. Enhance your event experience by using this meeting app. Features include the agenda, speaker biographies, and additional content.

Screenshots

CallingTree4 screens
ICG Events4 screens

Verdict

The call

The clearest difference is update cadence: ICG Events at monthly against CallingTree's every 7 months. CallingTree's advantage is iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CallingTree ships an update every 7 months, ICG Events monthly. The most recent releases landed on October 10, 2026 and October 5, 2026 respectively.

Scorecard2 real differences ยท 6 level
CallingTree versus ICG Events: the parameters behind the verdict, then further details
ParameterCallingTreeICG Events
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 7 monthsMonthly โ€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeโ€”
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS15.6 โ€” better17.0
Further details โ€” not scored
Size4 MB55 MB
Age rating4+17+
DeveloperThe Calling Tree CompanyICG PLC

In-app purchases

None

CallingTree

No in-app purchases

None

ICG Events

No in-app purchases

Questions

Is CallingTree free?
CallingTree is free to download, with no in-app purchases.
Is ICG Events free?
ICG Events is free to download, with no in-app purchases.
Do CallingTree or ICG Events have ads?
Neither CallingTree nor ICG Events shows ads.
Which is updated more often, CallingTree or ICG Events?
CallingTree ships an update every 7 months, and ICG Events monthly. Most recently, CallingTree was updated on October 10, 2026 and ICG Events on October 5, 2026.

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