Castle vs Upcall

Castle is the easiest way to protect your customers in web and mobile apps

Castle looks for suspicious login patterns without bothering the legitimate user nor the site administrator. The fully-automated anti-hijack engine identifies potential account compromises based on where the user logs in from and how they navigate the site.

On-demand calling community for sales, survey and marketing calls.

Upcall is the 1st collaborative call outsourcing platform, allowing businesses from around the world to create smart outbound call campaigns in less than 5 minutes.

Collaborate real-time with 1000+ on-demand callers working from home to work on your sales, marketing, and customer support calls. We match your call campaign with the right callers, based on geography, expertize, language and much more.


Upcall offers five distinct calling products including:

- Sales and Lead Generation (UpSell)
- Loyalty and Customer Support (UpFidelity)
- Alerts and reminders (UpAlert)
- Database update and enrichment (UpAsk)
- Market Research & Surveys (UpSurvey)

Upcall's intelligent platform gives clients 24/7 access to all modern technology tools in order to manage call campaigns effectively and independently, such as call recording, group messaging, detailed analytics and reporting, API and integrations with your existing tools (Google, Slack, Salesforce, Zendesk, Intercom...) as well as an all-inclusive and transparent per minute pricing.