The TelemetryDeck Blog

How to map values in queries for cleaner insights →

Learn how to merge related values in your TelemetryDeck queries with a simple mapping function.

Introducing Namespaces →

TelemetryDeck now uses namespaces for better performance

TelemetryDeck Fall Update 2025 →

Lisa and Daniel reflect on participating events, share the roadmap, and a few company figures.

Ahoy! Discover your most loyal crew with our new Retention Dashboard 🦜 →

The third sail is raised! Our new Retention Dashboard reveals your most loyal users – those faithful crew members who've made your app part of their daily voyage and keep coming back for more.

Ahoy! Discover the "aha moments" with our new Activation Dashboard ⚓ →

The second sail is hoisted! Our new Activation Dashboard reveals when users truly connect with your app – automatically tracking those crucial first experiences that turn curious installers into engaged users.

Notebooks are now shareable! →

You can now publish your notebooks and pass them around like blog posts!

Never again lose analytical context with Notebooks →

Learn how TelemetryDeck Notebooks help you maintain context in your analytics investigations, especially when waiting for new data to arrive.

The social media balancing act: Where we find our visitors →

At TelemetryDeck, we leverage multiple social networks like Mastodon, Twitter, Bluesky, and LinkedIn to drive traffic to our site, each with its unique benefits and challenges. While Twitter remains a key platform despite its rougher tone, Mastodon offers a more positive and engaged community, and Reddit provides valuable, targeted traffic through direct interactions.

Apps from queer developers you should know →

In June, it's all about pride: we’re shining a spotlight on apps created by developers who count themselves part of the LGBTQIA+ community.

50% off TelemetryDeck for One Year – Just in Time for WWDC →

The global developer community is gathering. WWDC is here. And whether you're tuning in from Cupertino or your couch, we’ve got something for you: a full year of TelemetryDeck at half price.

Introducing Notebooks →

Introducing our new Notebooks feature

Which Android version should my app support? →

What to consider when deciding on your apps' Android version compatibility.

Which iOS version should my app support? →

What to consider when deciding on your apps' iOS version and device compatibility.

Apps made in the EU you should know →

This month, it's all about developers who provide apps that are made in the European Union.

Ahoy! Chart your app's growth with our new Acquisition Dashboard 🏴‍☠️ →

TelemetryDeck introduces a comprehensive Acquisition Dashboard based on the Pirate Metrics framework, helping developers understand exactly how, when, and where new users discover their apps with zero additional code required.

Track User Engagement with New Duration Signals →

TelemetryDeck introduces Duration Signals, a powerful new way to measure how long users spend on different activities in your app. With just two API calls, you can now track engagement time, completion rates, and user behavior patterns with precision.

Fun apps you should know →

This month, it's all about developers who provide apps that bring joy into the lives of their users.

Introducing Automatic User Growth Tracking →

TelemetryDeck now automatically tracks new user installations and first launches right out of the box. With this latest SDK update, you get instant visibility into your app's growth through our redesigned Acquisition dashboard—no extra code required.

TelemetryDeck Winter Update 2025 →

2 Awards, Funding, and amazing People

Our December 10 Traffic Spike →

December 10 we received a massive traffic spike. Here's how we handled it.

Celebrating Accessibility: New Insights for More Inclusive Apps →

TelemetryDeck introduces new Accessibility Insights to help developers understand how users engage with accessibility features. With a simple SDK update, these insights offer actionable data to create more inclusive and user-friendly apps.

TelemetryDeck 🧡 RevenueCat →

Here's how TelemetryDeck's new RevenueCat integration works

Grab your Black Friday Bundle and get 60% discount →

Grab your discount code now and save on our yearly plans.

Migrating the TelemetryDeck SDK to Swift 6 →

What we've learned while migrating our code to the new world of data-race safety in Swift 6 mode.

We've upgraded our servers →

Our calculation servers now live in a new data center and are using a new, way more efficient architecture.

Guest Post: Hello Friendly Captcha →

Guest Post: Captcha that is hard on the bots, not on humans

TelemetryDeck v6: Navigation and Information Hierarchy →

Welcome to a Smoother, Smarter TelemetryDeck

SwiftSDK 2.0 →

We're updating our naming schemas and SDKs to make docs and code cleaner and easier to read

My Internship at TelemetryDeck →

Lukas talks about his two week internship and what he has learned.

Spring update 2024 →

A lot of numbers and a discount code!

Books & audiobook apps you should know →

We're highlighting books & audiobook apps. Get to know Bookie, Inspired, and Reading List.

iOS versions market share in April 2024 →

iOS, iPadOS and visionOS versions market share April 2024

TelemetryDeck v5: User and Organization Management →

Our newest release is available now. Join and manage multiple organizations, manage rights and permissions for your collaborators, and enjoy more default insights!

User churn and retention – these are the most important take-aways from our webinar →

Here you will find the most important findings on the topic of user churn, which you can use to gain an overview and optimize your app.

Boost your focus with top productivity apps →

This month, we're highlighting customers that delved into the world of focus & productivity apps. Get to know Genius Scan, Reading List, Display Buddy, Memento, and Focus!

TelemetryDeck now supports Flutter →

Today we're releasing a TelemetryDeck SDK for Flutter apps

iOS versions market share in March 2024 →

iOS, iPadOS and visionOS versions market share March 2024

Vision Pro is here and so are your apps! →

This month, we're highlighting customers that delved into the world of Vision Pro. Get to know PhotoShade, Spatial Effects, CrossCraft, and more!

Free webinar: User Churn: Best Practices for Mobile Apps →

Join TelemetryDeck and Chatty Insights for a deep dive into the exciting topic of User Churn!

Meet Chatty Insights →

Today we are introducing you to a befriended company that provides a useful service for app providers who want to better understand their users. Meet Chatty Insights!

iOS versions market share in February 2024 →

iOS, iPadOS and visionOS versions market share December 2023

We're ready for Vision Pro →

Apple Vision Pro is coming out in just a few days – here's our quick reminder that TelemetryDeck's SDK is compatible with Vision Pro.

A statement from TelemetryDeck's founders →

Our statement on the catastrophic rise of the political right in Germany and the great resistance that is currently spreading in our country.

Open letter to EU Member States on the proposed CSA Regulation →

We are proud signatories of this open letter to the EU member states expressing our concerns about the loss of online privacy.

Fitness apps you should know →

This month, we're highlighting customers that provide apps supporting you in your fitness journey. Get to know Sizr, MeandR, Rheaparks, and Personal Best.

2023 #Telemetry Wrapped →

Let's have a tiny look back at how our year has been

Apps for your well being →

We're shining a spotlight on healthcare apps. Discover the app developers behind these health solutions...

3 Billion Signals →

A quick celebration of the fact that we're growing every faster

iOS versions market share in December 2023 →

iOS 17 has the biggest market share now

Grab your Black Friday discount →

Grab your discount code now and save on our yearly plans.

The new JavaScript SDK →

TelemetryDeck JavaScript SDK 2.0 is here and it speaks Node now!

AI-powered apps →

We're highlighting apps that use AI. Get to know great app developers, that talk about their AI powered apps...

iOS versions market share in November 2023 →

iOS 17 is growing, 16 is shrinking but still dominant

State of the TelemetryDeck Data Set →

Over the last week, our servers were sometimes unable to calculate queries they were being sent. Here's why.

TelemetryDeck Fall Update 2023 →

Founders Lisa and Daniel tell us how the startup TelemetryDeck is developing and talk about awesome privacy-first tools.

iOS17-ready apps →

We're highlighting freshly updated apps. Get to know great app developers, that talk about being ready for iOS17.

iOS versions market share in October 2023 →

iOS 17 is here, finally!

TelemetryDeck's referral program →

Learn more about TelemetryDeck's referral program and how you can profit.

Websites →

We're highlighting websites using TelemetryDeck for privacy-friendly analytics

We're ready for iOS 17 →

We've been hard at work making sure your apps are ready for iOS 17

Marketing to iOS developers in 2023: It’s an odyssee →

We share our learnings in the field of B2D marketing as a SaaS startup.

iOS versions market share in September 2023 →

All systems are go for the iOS 17 launch

Color Schemes in TelemetryDeck dashboard →

Our first set of selectable color schemes targets people with color vision deficiency

SwiftUI apps →

We're highlighting SwiftUI apps. Get to know great app developers, that talk about writing apps in SwiftUI..

TelemetryDeck for the Web →

TelemetryDeck is releasing a new Web SDK so you can add privacy-first analytics to your website

iOS versions market share in August 2023 →

The maturation of iOS 16 and oncoming update storm of iOS 17

2023 Summer Update →

2.000.000.000 signals – we're taking the time to celebrate the small and medium business successes.

Weather apps you should know →

We're highlighting weather apps. Get to know Big Weather, Windomter, Morpho Converter and Paku.

iOS versions market share in July 2023 →

iOS 16.5 is expanding, iOS 17 is approaching, and TelemetryDeck supports visionOS now

New strategic customer in the field of public transport →

We are pleased to announce the launch of a pilot project with Stadtwerke Augsburg. The goal of the collaboration is to optimize the swa mobil app, which allows users to find their public transport connections in the city of Augsburg and buy tickets.

App Tracking Transparency Updates in iOS 17 →

Technical changes that will enforce new Apple privacy policies are coming with App Tracking Transparency update

Freshly updated apps you should know (WWDC special) →

WWDC special: We're highlighting customers that tell us about the adoption process of their latest app version.

iOS versions market share in June 2023 →

iOS 16.5 is expanding, iOS 17 is approaching, and WWDC is around the corner

Privacy by design vs. privacy by paperwork →

A clarification on why it makes a difference if an analytics tool is only GDPR-compliant, or if it was developed with a privacy first approach and does not process personal data at all.

Guest Post: What is App Store Optimization →

Guest post: 7 steps to improve your ranking in the App Store and Play Store.

TelemetryDeck v4.0 brings A/B Testing Experiments →

Introducing TelemetryDeck's New A/B Testing Feature

Photo and video apps you should know →

We're highlighting apps that help you create better photos and videos. Get to know Hello There, Captionista, trichromatic and Cascable.

iOS versions market share in May 2023 →

iOS 16.5 is expanding, iOS 17 is approaching, and WWDC is around the corner

Developer tools you should know →

We're highlighting customers that provide developer tools. Get to know SecureShellfish, LaunchBuddy, RoadKit, RemafoX and Dark Noise.

Spring update 2023 →

Pricing and other plans.

iOS versions market share in April 2023 →

iOS 16.4 has landed, iOS 17 is approaching, and WWDC has been announced

We've improved our Android Support →

Our Kotlin SDK now supports versions down to Android 21

Live-webinar: Using Funnels to Analyze User Streams →

Attend our webinar and get to know our new funnel feature

Home automation apps you should know →

We're highlighting customers that provide apps that support your home automation. Get to know Follow the Sun for HomeKit, Signals for HomeKit, TV Remote, and HomeRun.

Version 3.0 has Funnels! →

Introducing TelemetryDeck's New Funnels Feature

Meet our mascot, Sondrine →

Get to know how we came up with the idea of a tiny space probe as a mascot for TelemetryDeck.

iOS versions market share in March 2023 →

Almost 9 out of 10 iPhones are running iOS 16, and iOS 17 is coming

v2023-2 is all about Filters! →

A tour through the user-facing features and under-the-hood changes we’re releasing for TelemetryDeck in February.

Language learning apps you should know →

We're highlighting customers that provide apps that help you learn new languages. Get to know Nihongo and Nihongo Lessons.

iOS versions market share in February 2023 →

Almost 9 out of 10 iPhones are running iOS 16, and iOS 17 is coming

Organization and calendar apps you should know →

We're highlighting customers that provide apps that help you organize your daily tasks. Get to know In Your Face, Classifier, Sequel, SuperPlanner and Almost Done.

Winter Update 2023 →

A very exciting milestone, your feedback, and the future!

How to recreate 2022 Wrapped for your App using TelemetryDeck →

Gather data by Jan. 1 to make your own Spotify Wrapped-like feature. It's a fun way to visualize listening patterns and preferences, plus it's shareable.

Food and cooking apps you should know →

We're highlighting customers that provide apps that help you eat better. Get to know Mensa Dresden, and Pestle.

Happy holidays from TelemetryDeck →

For many of us, the holidays are a time to unwind, to think of family and friends, and to give gifts. We asked ourselves: What is a present that we can give to you, the TelemetryDeck community, as a way of saying thank you for a wonderful year?

Our Year in Review →

TelemetryDeck, wrapped in a nice package. We have some cool stats for you to illustrate our year.

Update v2022-12 →

A whirlwind tour through the most important new features in v2022-12

Live-webinar: Get to know TelemetryDeck in action →

Attend our first webinar ever!

iOS versions market share →

How iOS versions are gaining market share and how quickly people update their operating systems.

TelemetryDeck Fall Update 2022 →

Founders Lisa and Daniel tell us how the startup TelemetryDeck is developing, who made them pretty, and why they have mixed feeling about the fall of Twitter.

Why You Should Know the Marketplace Principle as an App Developer →

What is an EU representative, and do you need one? We help you navigate the jungle of the GDPR.

TelemetryDeck Receives Seed Capital From Private Investors →

The story behind TelemetryDeck's funding.

World Mental Health Day →

We're looking at apps that are good for your mental health and featuring the 2 most promising for this year's world mental health day.

Global Climate Strike 2022 →

We're looking at apps that are good for the environment and featuring the 3 most promising for this year's climate strike day.

2022 Summer Update →

We’d never publish a summer update so late in the year without good reason. And reasons we have! Today we have a big overview of (almost) all topics of the last weeks.

Open Sourcing the Swift Apps →

An update on our macOS and iOS apps, and why we're open-sourcing them

Happy Spring from TelemetryDeck →

Summer is just around the corner and the mood is brightening. Time to remind our dear community that we have created a wonderful way to say thank you.

Spring Update →

Lisa tells us how the company is developing, what award we won, and what they are most excited about.

Who says you have to collect personal data to analyze user behavior? →

It is a fact that analytics tools collect personal data. But is it also necessary? We discuss the question of who actually benefits from data collection.

Some things we can do to make sure we're a more inclusive workplace →

March 8 is here to remind us to check our privileges and to think about how we can make our slice of the world a bit better. Here are some ideas.

Don’t collect data, there could be war →

Wherever data is collected about people, eventually, covetousness arises. Often, the aim is to make money out of the data. But databases can also be used in ways that pose a serious threat to life and limb.

Here’s What App Developers Should Know About Privacy →

Even though we are trying hard, the data protection industry is not yet really cool and fancy.

The one with the widgets →

We just released our newest version of TelemetryDeck Viewer for iOS, and we're super excited to share it with you: This one finally has widgets 🚀

Test Mode →

TelemetryDeck now supports Test Mode, a way to ensure that your signals are being collected even during development.

TelemetryDeck Fall Update 2021 →

Founders Lisa and Daniel tell us how the startup TelemetryDeck is developing, what award the company has won, and what they are most excited about.

We are now TelemetryDeck →

Starting a business is a process that brings many surprising twists and turns. One of them is the change of our name: we are now TelemetryDeck, but we still bring you telemetry for your apps.

Colorful Charts →

We get a lot of feature request, and oftentimes they don't have much overlap: One person really needs feature A to do their work, another person would very much have feature B.

Using analytics to increase your app's revenue →

Why analytics is good, actually, and how it can help you improve your app, get more conversions, and make users happy

TelemetryDeck Winter Update →

Founders Lisa and Daniel tell us how the startup TelemetryDeck is developing, what award the company has won, and what they are most excited about.