Comparison

Cearvol vs BSLLTER

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

Head to head
About

Cearvol

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
Read full description

The hearing app is developed and designed for Cearvol hearing aids to help users setup hearing aid functions and customize hearing parameters quickly. Includes the following functions as follows: "Main control " Volume adjustment: 10-level volume adjustment, synchronized with the gain, and the left and right hearing aid can be adjusted independently. Hearing aids battery : Synchronously shows the current battery percentage of the hearing aids. Ear tips switching: Different acoustic parameters are set for the two ear caps (closed and open ear tips). When switching ear tips, you need to select the right eartip setting on app. Synchronization function: Quickly switch whether the volume control of the left and right hearing aid is synchronized. Scene mode: Quickly switch scene modes and parameter applications for different usage scenarios. Scene modes include indoor mode, conversation mode, restaurant mode, and traffic mode. In each scene mode, parameters such as noise reduction level, voice enhancement level, microphone directivity, EQ compensation, etc. can be independently customized. Indoor mode is aimed at quieter indoor scenes and office scenes; Conversation mode is aimed at face-to-face conversations in conference rooms and coffee shops in generally quiet environments; Restaurant mode is aimed at dining scenarios such as Western restaurants in generally quiet environments; Traffic mode is aimed at common commuting scenarios such as taking the subway and bus.

About

BSLLTER

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
Read full description

Users can control hearing aids remotely with BSLLTER software. With the Intelligent Control application, you can: 1.Adjust volume of the hearing aids. 2.Switch the hearing aid program. 3.Adjust the gain in different frequency band. 4.Switch feedback and noise reduction 5.Test your listening 6.Check the battery power and connection status.

Screenshots

Cearvol4 screens
BSLLTER3 screens

Verdict

The call

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.

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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Cearvol versus BSLLTER: the parameters behind the verdict, then further details
ParameterCearvolBSLLTER
PriceFreeFree
Rating2.6 (18 ratings)2.6 (5 ratings)
Positive reviews25.0% of reviews50.0% of reviews — better
Number of ratings18 — better5
Update frequencyEvery 3 weeks — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.013.0
Further details — not scored
Size115 MB8 MB
Age rating4+4+
DeveloperUNICE Intelligent Medicine Shenzhen Co., Ltd.KOOMA INTERNATIONAL TRADING, LLC

Customer experience

Cearvol

All ratings18 ratings
Positive22.2%
Neutral22.2%
Negative55.6%
Written reviews12 reviews
Positive25.0%
Neutral8.3%
Negative66.7%

BSLLTER

All ratings5 ratings
Positive40.0%
Neutral0.0%
Negative60.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Cearvol

No in-app purchases

None

BSLLTER

No in-app purchases

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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