ResponderApp vs CallMax UC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ResponderApp
This app provides a streamlined platform for agencies utilizing Xtra Duty or Extra Duty Solutions. It offers a convenient way to manage off-duty work and related administrative tasks.
- Off-duty work management
- Agency integration
- Streamlined administration
- Xtra Duty support
- Extra Duty Solutions partner
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If your agency uses Xtra Duty or if your off duty work is administered by our strategic partner, Extra Duty Solutions, then Responder is available to you!
CallMax UC
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CallMax is a powerful cloud-based communication platform designed to simplify and unify your company’s communications. Whether you’re using a mobile device or a computer, CallMax offers professional-grade calling features, real-time collaboration tools, and advanced call management, all within an intuitive interface. CallMax is built for teams that value flexibility, visibility, and control. Whether you are a small business or a large corporation, CallMax keeps you connected and ready to respond anytime, anywhere.
Screenshots
Verdict
The clearest difference is update cadence: ResponderApp at monthly against CallMax UC's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ResponderApp ships an update monthly, CallMax UC every 9 months. Both last shipped on October 12, 2026.
| Parameter | ResponderApp | CallMax UC |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (50 ratings) — better | — |
| Positive reviews | 30.0% of reviews | — |
| Number of ratings | 50 — better | — |
| Update frequency | Monthly — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.1 | 15 — better |
| Further details — not scored | ||
| Size | 44 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | Extra Duty Solutions | TM Telcomm Corp |
In-app purchases
ResponderApp
No in-app purchases
CallMax UC
No in-app purchases
Questions
Is ResponderApp free?
Is CallMax UC free?
Do ResponderApp or CallMax UC have ads?
Which is updated more often, ResponderApp or CallMax UC?
Other comparisons
