Tendra Petsthe app for your pet

~ from Balu's notebook ~

Everything for your pet – in one place.

Feeding, vaccinations, vet visits and a diary for your pet – and a free dashboard for animal shelters.

scroll down, Balu is coming along

I have a pet

Never forget a feeding again
Vaccinations & vet on your phone
One photo a day, a look back every month

to the app → for shelters

I work at a shelter

All animals & tasks at a glance
Your own adoption page
Handover by QR code

~ quick access ~

Balu’s toolbox

🔎Ask BaluFind help for your problem 🍽️Food calculatorHow much food a day?🎂Age calculatorPet years in human years 📣Social media imagesAdoption image in 1 minute 📚Knowledge79 articles for 8 species ❤️DonateStraight to a shelter

~ ask Balu ~

What is your pet up to?

Ask me anything! I’ll find you the right article.

Social media images for your animals

Lovely adoption images for Instagram & Facebook – right in your browser, no sign-up.

Create an image →

Shelters on board

with their own adoption page in Tendra Pets

Book a demo →

❤️ Donate directly to a shelter

the money goes straight to the shelter – not to Tendra Pets

Knowledge for every pet

short articles, explained by Balu

🐱 CatFirst days · 3 min

The first days with your cat

A quiet room, hiding places and no rush.

🐱 CatFood · 2 min

How much food does a cat need?

The pack, the scales and a look at her figure.

🐱 CatHealth · 2 min

Vaccinations at a glance

Which vaccinations your cat needs.

🐱 CatBehaviour · 2 min

Cat language: tail, ears, eyes

How your cat shows you how she feels.

🐱 CatCare · 2 min

Getting the litter box right

How many, where and which litter.

🐱 CatEveryday · 2 min

Keeping indoor cats busy

So life indoors doesn't get boring.

🐶 DogFirst days · 3 min

The first days with your dog

Calm, fixed routines and short walks.

🐶 DogFood · 2 min

How much food does a dog need?

Guideline, scales and exercise.

🐰 RabbitFirst days · 2 min

Rabbits from a shelter

What to ask and prepare beforehand.

🐹 Guinea pigFirst days · 2 min

Guinea pigs from a shelter

What to ask and prepare beforehand.

all articles →

Quick maths

~ Balu’s calculators ~

🍽️ How much food?

Weight (kg)kcal per 100 g (on the pack, optional)

A guide for healthy adult pets. Young, old, sick or overweight pets need different amounts – ask your vet if unsure.

🎂 How old in human years?

Age (years)5

A rough rule of thumb – every pet ages a little differently.

~ from Balu’s diary ~

New in the app

soon

Version 1.3

Tendra Pets now speaks English – pick your language at the start.
New logo: a dog and a cat, curled up together.
Widgets show open feedings first.

28 Oct 2026

New website

This page – with knowledge, calculators and Balu walking along.

23 Oct 2026

Version 1.2.1

Personal subscription page with a reminder before the trial ends.
A whole day to get to know the app after your first pet.
Food amount is optional during setup.

15 Oct 2026

Version 1.2

Home screen widgets: pet room, "Fed yet?", photo of the day and walks.
Household notification when someone fed the pet.

3 Oct 2026

Version 1.1

Haptics and little sounds in the pet room.
Faster photos and less storage.

Tristan — Tristan, founder

Balu – 8 years · from a shelter
Bella – 9 years · from a shelter
Milo – 2 years · from a shelter

~ who’s behind it? ~

Hi, I’m Tristan.

Age: 25
Home: Graz, Austria
Before: 5 years as a soldier – including 7 months deployed in Bosnia, where I met lots of street dogs.
Tendra Pets: since June 2026
Team: Balu, Bella & Milo – all three from a shelter

„Every animal deserves a loving home – and I want to do my part.“

I build Tendra Pets on my own in Graz, Austria – with lots of coffee and three cats as the strictest testers: Balu, Bella and Milo. All three came from a shelter – and that’s exactly why this app exists.

I want shelters to spend less time on paperwork and more with the animals – and every pet to be well looked after once adopted. Questions, ideas or criticism? Just write to me.

– Tristan & the gang

Write to me →