# CallMax UC vs murmur

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.

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.

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.

## The numbers

| Metric | CallMax UC | murmur |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (32 ratings)](https://appshunter.io/ios/app/murmur-ai-practice-calls/id6755495030/reviews)** |
| Number of ratings | — | **32** |
| Positive reviews | — | 36.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 68 MB | 53 MB |
| Requires iOS | **15** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [TM Telcomm Corp](https://appshunter.io/developer/1822307258) | [Drobinin Limited](https://appshunter.io/developer/1713029153) |

## What reviewers say

### CallMax UC

[App page](https://appshunter.io/ios/app/callmax-uc/id6747675064)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### murmur

[App page](https://appshunter.io/ios/app/murmur-ai-practice-calls/id6755495030)

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:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Public Speaking Pro Weekly | $6.99 | per 7 days |
| Public Speaking Pro Weekly | $6.99 | per 7 days |
| Communication Skills Pro Monthly | $14.99 | per month |
| Communication Skills Pro Annual | $79.99 | per year |
| Communication Skills Pro 12-Mo | $119.99 | per year |
| Quick Practice Session | $1.99 | one-time |
| Communication Boost Pack | $6.99 | one-time |
| Social Confidence Bundle | $12.99 | one-time |


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*