tellows – Caller ID & Block - Interview with the developer of a fantastic app

Did you have any prior development or coding experience?

Our team is divided into Android and iOS specialists. We are active in this area for over 8 years.

What was the most challenging aspect of developing mobile app?

Creating an intuitive app with a simple but clean user interface can be challenging at times, especially when we see our app after all these years with different eyes than a user who installed it the first time. Therefore we want to guide the user as best as possible, but at the same time make sure that the user understands all aspects and functionality without being overwhelmed.

Jessica, the interviewee, is the marketing manager of tellows. For over five years, she has been working on the product development and branding of tellows. App store optimization, concept creation, and project development are some of her core responsibilities. Tellows company is based in Germany and strives to protect people around the world from unwanted calls with mobile apps, landline solutions and our phone number reverse search website.

Name a few of your favorite apps and reason you love them.

The German quiz app “Quizduell” keeps me challenged every day. A home workout (especially during the current pandemic) with “Cyberobics” is the best way to burn off energy and focus on new challenges.

How long have you been working on this app?

We are working on our apps for over 8 years. Including a re-launch for the iOS app 4 years ago.

What need of the user did you have in mind when developing this app?

We want to help users identify unknown calls that could be potentially dangerous and we want to give them a better feeling when answering a call. Several protection levels help the users creating their own personalized protection.

In what way do you think your app is better than similar apps on the market? Please describe in detail what innovation you think you bring and what you are proud of in your app.

We have a really distinctive separation of the spam phone numbers that we have collected and do not simply differentiate spam and non-spam. Our own scoring system (tellows score) allows making more precise evaluations. Some calls are more annoying than others and people around the world perceive incoming calls in a different way. The scoring also allows to manually change the protection level e.g. by only blocking the worst-rated callers or also phone numbers with ratings that range in a wider span. We also provide information on the caller name and category to make a more detailed caller ID possible.

We do not collect any more permissions than necessary to identify incoming calls to give the user a secure feeling. We believe in our community and want everyone to be protected, so we make a cross-device usage of the tellows blacklist for registered users possible by connecting our apps, landline products, and the website.

What are your future plans and expected features of the coming new versions of this app?

We are trying to listen to the user and always improve the functionality and interface. More possibilities for personalization are on our current to-do-list. Blocking of area prefixes and country prefixes will be something we will work on next.

Assuming new users of your app are reading this page. What do you want to ask them to do (contact you about X, Share the app, etc.)?

We look forward to hearing your feedback! You can send us an email or leave a rating on the app store with your thoughts and experiences when using the app. If it helped you with avoiding spam calls, we would be happy if you share it with your friends and family or anyone who is in need of a protection against unwanted calls.

tellows – Caller ID & Block

About App:

Stay away from spam calls!
Rate numbers, identify robocalls and block calls with our tellows app. Benefit from the free search for caller ID and info of unknown numbers, spam call blocker, personal blacklist, and more!
How the App Works
? Identify unknown caller immediately (Caller ID)
Decide which calls you are going to answer! Spam calls, scammers, or annoying calls from call centers are immediately detected with the tellows app. Incoming calls are displayed with a score from 1 (trustworthy) to 9 (not trustworthy) on the screen of your mobile phone. Besides rating, you can also recognize the name of the caller, the caller type, and from where it calls
? Number lookup and info of unknown caller
Thanks to the huge tellows community, you will be able to find thousands of spam numbers and details to identify them. Our database is updated constantly, no more trouble from scammers or telephone advertisements!
? Evaluate and comment on phone numbers
Join us and help us on our mission! Comment and evaluate unknown numbers, so we can prevent phone scams together! Connect your account and enter the tellows world on all devices.
? NEW: Call blocker and custom blocklist
In the free version, you can manually block calls locally.
In the Premium version, you can block calls using the community and local blocklist features. All currently rated dangerous numbers are stored on your phone and can be blocked even if the phone is offline, thanks to the local updated blacklist. The Premium version does not contain any advertisements.
Features at a Glance
- Identify calls in real time with free caller ID
- Use call blocker with Premium
- Block numbers manually for free
- Search phone numbers
- Rate telephone numbers
- tellows score as indicator of the trustworthiness for improved caller ID
- Detailed number lookup
- Add numbers from our database to your address book
- Login to connect to your tellows user account
- Protection from telephone harassment, persistent call centres, phone scams, nuisance and other annoying calls
- See list of incoming SMS from unknown numbers

Categories: Communication

Date: November 28, 2020

Developer: Tellows

About developer: Jessica, the interviewee, is the marketing manager of tellows. For over five ... Read more



App URL in iTunes
App URL in Google Play


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