Grid Words: Logical Letters
Grid Words: Logical Letters is a tricky, word-based puzzle game. Like a crossword, but better.
Move the tiles to complete the grid. With easy-to-learn gameplay and a sleek design, Grid Words is here for all you word fiends that can't quite scratch that word puzzle itch. Now with almost 200 unique puzzles every month!
It's time to make some words!
Keijo
KEIJŌ is a relaxing, shape moving, color-theory, puzzle game.
Move the shapes to match the amount of visible colours. Earn stars to unlock even more exciting shapes and new game modes. Or play INFINITE mode and go at your own pace.
Can you beat your high score?
Pixel Princess
Pixel Princess is a classic retro puzzle game - easy to learn and hard to master.
The Princess Pixel has lost her dragon and - even worse - he's split into multiple copies! It's up to you to find and unite them, as quickly as possible.
Are you up to the challenge?
Tiny Evolution
In Tiny Evolution you start life as an amoeba, floating around in the endless void. But you could be so much more!
Connect the different systems together and try and evolve up the not-scientifically-rigorous! complexity chain.
Can you go all the way?
The Spire
The Spire is an indie puzzle game where all you need to do is draw a line up the spire. It's almost certainly as easy as that, right?
With plenty of different puzzle types, some requiring unique solutions, some requiring out-of-the-box thinking, but all needing your brain.
Can YOU make it to the top of the Spire?
Poo Pal: Loo Trip Tracker
Poo Pal is your friendly assistant to quickly and simply track your bowel motions/loo trips/regularity.
Whatever you call it, this app keeps a simple log of it, which you can use to check see how your symptoms are changing through time or because you just like recording data!
You can view your data by time of day and see it aggregated daily, weekly, or monthly. You can also see how details associated with each trip are changing through time.
About us
atum Apps is an indie app (mostly games) development studio based in Exeter, UK. We are a small team, dedicated to creating new and engaging app experiences.
Like all the best things, atum Apps was formed in a third floor apartment in Paris, France in January 2021. We moved to our current home in Exeter in summer 2022.
All of our apps aim to provide a clean, polished, and unique experience. If you like our work, don't hesitate to leave a review and some stars - they go a long way!
P.S. Please do not feed the chain chomp!
Privacy Policy
Last updated: 2 October 2026
This policy covers all apps by atum Apps, for iOS and Android. Our apps have no accounts and no ads, and do not ask for your name, email address or any other contact details.
Anonymous gameplay stats. To help us balance our games, our apps may send us anonymous gameplay stats. These consist of a random identifier created when the app is first launched (it is not linked to you, your device's advertising ID or any account, and reinstalling the app creates a new one), details of the games you play (such as what you play, your scores, and the settings in use), the app version, and whether you are playing on iOS or Android.
Where an app sends these stats, sharing them is on by default. You can turn it off at any time in the app under Settings → Privacy → Share anonymous gameplay stats. Once it is off, the app stops sending stats and discards any that were waiting to be sent.
Storage and retention. The stats are stored by our hosting provider, Supabase. As with any internet service, the hosting provider may briefly process your IP address in its request logs when the app connects; we do not store IP addresses with the gameplay stats. The stats are kept indefinitely. Because they are anonymous and cannot be tied to an individual, we are unable to find or delete the stats belonging to a particular person. We do not sell this data or use it for advertising.
On your device. Your progress and settings are saved on your device only. An app that sends the stats described above needs internet access to do so; our apps request no other device permissions.
Achievements. In order to access optional achievements, users must login with their Game Center account (handled by Apple) or their Google Play Games account (handled by Google).
Purchases. Some of our apps are paid downloads, and some offer optional additional content to purchase. The payment transaction is handled by Apple or Google, and we never see your payment details.
Contact. If you have any questions about this policy, contact us at contact@atumapps.com.