# Caller IP Mobile vs Equalizer + Volume Booster

The clearest difference is in-app purchases: Caller IP Mobile at none against Equalizer + Volume Booster's 2. Caller IP Mobile also leads on ads (none vs shown) and iOS requirement (10.0 vs 15.1). On price, update cadence and device support there is nothing between them.

Both are free to download. Equalizer + Volume Booster sells 2 in-app purchases, starting at $2.99 per 7 days. Caller IP Mobile asks for nothing beyond the download.

Caller IP Mobile ships an update every 5 weeks, Equalizer + Volume Booster every 6 weeks. The most recent releases landed on September 7, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Caller IP Mobile | Equalizer + Volume Booster |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 20 MB | 68 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Caller IP Inc](https://appshunter.io/developer/1246609553) | [MELIORAPPS INTERACTIVE, SRL](https://appshunter.io/developer/1579240957) |

## What reviewers say

### Caller IP Mobile

[App page](https://appshunter.io/ios/app/caller-ip-mobile/id1246609554)

Connect your Rinble VoIP phone service to your mobile device. This application allows you to use your existing Rinble number for calls and manage your account on the go.

**Highlights:** Pair Rinble VoIP with mobile, Use Rinble number for calls, Mobile account management, Voice-over-IP integration

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

**In-app purchases:** none


### Equalizer + Volume Booster

[App page](https://appshunter.io/ios/app/equalizer-plus-volume-booster/id6444832616)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Music Amplifier Weekly | $2.99 | per 7 days |
| Bass Booster Monthly | $9.99 | per month |


## Frequently asked questions

### Is Caller IP Mobile free?

Caller IP Mobile is free to download, with no in-app purchases.

### Is Equalizer + Volume Booster free?

Equalizer + Volume Booster is free to download, with in-app purchases available.

### Do Caller IP Mobile or Equalizer + Volume Booster have ads?

Equalizer + Volume Booster shows ads; Caller IP Mobile does not.

### Which is updated more often, Caller IP Mobile or Equalizer + Volume Booster?

Caller IP Mobile ships an update every 5 weeks, and Equalizer + Volume Booster every 6 weeks. Most recently, Caller IP Mobile was updated on September 7, 2026 and Equalizer + Volume Booster on October 5, 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.*