# Cearvol vs BSLLTER

The clearest difference is update cadence: Cearvol at every 3 weeks against BSLLTER's every 7 months. Cearvol also leads on ratings volume (18 vs 5). BSLLTER's advantage is review sentiment (50% vs 25%). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 2.6 for Cearvol against 2.6 for BSLLTER. Both are backed by a comparable volume of ratings — 18 and 5 respectively. Written reviews are what separate them: 25% of Cearvol's written reviews are positive against 50% of BSLLTER's.

Cearvol ships an update every 3 weeks, BSLLTER every 7 months. The most recent releases landed on September 18, 2026 and August 23, 2026 respectively.

## The numbers

| Metric | Cearvol | BSLLTER |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (18 ratings)](https://appshunter.io/ios/app/cearvol/id6475083036/reviews) | [2.6 (5 ratings)](https://appshunter.io/ios/app/bsllter/id6504424749/reviews) |
| Number of ratings | **18** | 5 |
| Positive reviews | 25.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 7 months |
| Monetization | Free | Free |
| Size | 115 MB | 8 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UNICE Intelligent Medicine Shenzhen Co., Ltd.](https://appshunter.io/developer/1723309369) | [KOOMA INTERNATIONAL TRADING, LLC](https://appshunter.io/developer/1784840025) |

## What reviewers say

### Cearvol

[App page](https://appshunter.io/ios/app/cearvol/id6475083036)

This app allows users to control and customize their Cearvol hearing aids. Adjust volume, switch ear tips, and select scene modes with personalized settings for different environments. It also displays the battery level of your hearing aids.

**Highlights:** 10-level volume adjustment, Independent left/right volume control, Hearing aid battery percentage display, Ear tip switching settings, Customizable scene modes (indoor, conversation, restaurant, traffic), Noise reduction and voice enhancement settings

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

**In-app purchases:** none


### BSLLTER

[App page](https://appshunter.io/ios/app/bsllter/id6504424749)

This application allows users to remotely control their hearing aids. Adjust volume, switch programs, fine-tune frequency bands, and manage noise reduction settings. It also provides battery status and connection information.

**Highlights:** Remote hearing aid control, Volume adjustment, Program switching, Frequency band gain control, Noise reduction settings, Battery status check

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

**In-app purchases:** none


## Frequently asked questions

### Is Cearvol free?

Cearvol is free to download, with no in-app purchases.

### Is BSLLTER free?

BSLLTER is free to download, with no in-app purchases.

### Which has better reviews, Cearvol or BSLLTER?

Cearvol and BSLLTER are both rated 2.6 out of 5 on the App Store, from 18 and 5 ratings respectively.

### Do Cearvol or BSLLTER have ads?

Neither Cearvol nor BSLLTER shows ads.

### Which is updated more often, Cearvol or BSLLTER?

Cearvol ships an update every 3 weeks, and BSLLTER every 7 months. Most recently, Cearvol was updated on September 18, 2026 and BSLLTER on August 23, 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.*