Comparison

CallMax UC vs murmur

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

Head to head
About

CallMax UC

Features
Read full description

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.

About

murmur

Practice phone calls with realistic AI to overcome anxiety and improve communication skills. Rehearse conversations for various scenarios like booking appointments, customer service, or job interviews in a private, judgment-free environment.

Highlights
  • Realistic AI mock calls
  • Conversation roleplay
  • Interview preparation
  • Customizable scenarios
  • Privacy-focused design
  • Communication skill improvement
Features
Read full description

Murmur is a private way to practice phone calls with realistic AI. If you hate calling doctors, offices, customer service, landlords, recruiters, or anyone you don't know, you're in the right place. A lot of us grew up texting everything. So when it's time to actually make a call, the brain just goes blank. Murmur lets you run the whole conversation first - you talk out loud, the AI talks back, and you rehearse the exact call you're scared to make. Most AI voices read at you. Murmur's coach speaks - intonation, pauses, and tone that shifts with the conversation. WHAT YOU CAN PRACTICE - Mock interviews with follow-up questions - Asking about a job application - Calling a doctor or clinic - Booking appointments - Talking to your landlord - Handling customer service - Returns, refunds, awkward conversations - Any scenario you write yourself FEATURES - A coach that sounds human - intonation, pauses, and emotion - 40+ scenarios across many categories, and you can write your own - 3 difficulty levels with different personalities and tones - Notes after every call - what worked, what to try next time - Rehearse in French, Spanish, German, and more - the coach picks up your language and switches with you - Breathing exercises to settle yourself before the real call - Your voice is never recorded or stored - streamed live during the call WHY IT HELPS Most phone anxiety comes from not knowing what the other person will say. Murmur lets you hear it ahead of time. Practice until the call stops feeling like a big deal. SUBSCRIPTION Try Murmur free. Upgrade for unlimited calls, interview prep, and advanced roleplay options.

Screenshots

CallMax UC4 screens
murmur4 screens

Verdict

The call

The clearest difference is in-app purchases: CallMax UC at none against murmur's 8. CallMax UC also leads on iOS requirement (15 vs 17.0). murmur's advantage is update cadence (every 3 weeks vs every 9 months). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. murmur sells 8 in-app purchases, starting at $6.99 per 7 days. CallMax UC asks for nothing beyond the download.

UpkeepUpdate frequency

CallMax UC ships an update every 9 months, murmur every 3 weeks. The most recent releases landed on October 12, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
CallMax UC versus murmur: the parameters behind the verdict, then further details
ParameterCallMax UCmurmur
PriceFreeFree
Rating—4.3 (32 ratings) — better
Positive reviews—36.4% of reviews
Number of ratings—32 — better
Update frequencyEvery 9 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS15 — better17.0
Further details — not scored
Size68 MB53 MB
Age rating4+4+
DeveloperTM Telcomm CorpDrobinin Limited

In-app purchases

None

CallMax UC

No in-app purchases

8 purchases

murmur

Subscriptions5
  • Public Speaking Pro Weekly3 Days trial$6.997 Days
  • Public Speaking Pro Weekly$6.997 Days
  • Communication Skills Pro Monthly$14.991 Month
Show 2 more
  • Communication Skills Pro Annual$79.991 Year
  • Communication Skills Pro 12-Mo$119.991 Year
One-time3
  • Quick Practice Session$1.99
  • Communication Boost Pack$6.99
  • Social Confidence Bundle$12.99

Questions

Is CallMax UC free?
CallMax UC is free to download, with no in-app purchases.
Is murmur free?
murmur is free to download, with in-app purchases available.
Do CallMax UC or murmur have ads?
Neither CallMax UC nor murmur shows ads.
Which is updated more often, CallMax UC or murmur?
CallMax UC ships an update every 9 months, and murmur every 3 weeks. Most recently, CallMax UC was updated on October 12, 2026 and murmur on October 28, 2026.

Other comparisons