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Simon Grimm

@galaxies.dev
1.7K followers 127 following 567 posts

Helping devs master React Native 🚀 | Founder Galaxies.dev 💫 | Sharing tips, tools, and tutorials to level up your mobile app game 📲 | YT www.youtube.com/@galaxies_dev 🔥

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Simon Grimm @galaxies.dev · 24/09/2026
If you have a server with CRON jobs do yourself a favor: Add them to a Sentry monitor ✌️ I don't want to learn about failures from my users.
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Simon Grimm @galaxies.dev · 06/08/2026
I’ve tried a lot of React Native tools over the years. Most are fun for a week. A few made it into my daily workflow. I made a video about the ones I actually use to save time when building apps 👇
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Simon Grimm @galaxies.dev · 14/07/2026
TIL Expo now has its own SQLite DevTool 😍
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Simon Grimm @galaxies.dev · 13/07/2026
Testing a game is fun 🙃 You need to cover different platforms, different player levels, different devices... Think I need to figure out how AI can do all of that - any idea where to start the automation?
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Simon Grimm @galaxies.dev · 12/07/2026
I don’t think Tiny Harvest needs another feature right now. It needs more people to find it. That’s a much harder problem to solve.
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Simon Grimm @galaxies.dev · 11/07/2026
Long run this morning. One nice thing about marathon training: Even if work feels chaotic, you get one clear win for the day.
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Simon Grimm @galaxies.dev · 10/07/2026
If you want to lose weight, doing more sports is rarely the answer. It's 95% about what you eat. When I actively train, I am so much more hungry all the time that I have a hard time staying in a deficit at all.
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Simon Grimm @galaxies.dev · 10/07/2026
Tiny Harvest deserves players regardless of whether it gets featured. Time to build my own distribution 🔥
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Simon Grimm @galaxies.dev · 09/07/2026
Running a Product Page Optimization test for the first time ✌️ My games CR isn't great, and instead of randomly trying things, I made a test in ASC: - Original page - Simply a new preview video - New screenshots Traffic split equally between the 3, let's see if there are any meaningful trends!
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Simon Grimm @galaxies.dev · 09/07/2026
I have to set up a new Google dev account and transfer my game 🙈 Wish me luck in the migration. Will share how I did it and whether it worked!
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Simon Grimm @galaxies.dev · 08/07/2026
Not the most popular keywords, but trying to grow on some new ones like "acres" and ranking better on "stardew valley" ❗️Note: Don't directly use a competitor keyword or you get in trouble
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Simon Grimm @galaxies.dev · 08/07/2026
Current priorities: ✅ August season ✅ Bugs & QoL ✅ TikTok ✅ Reddit ✅ X Trying really hard not to hide behind “just one more feature.”
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Simon Grimm @galaxies.dev · 07/07/2026
Dear app store gods, please let this be another upswing and not just a few good days 🙏
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Simon Grimm @galaxies.dev · 07/07/2026
My game finally hit $5,000/month. For a few weeks, I thought: “Nice, this is my new normal.” Then installs dropped again. Why? 👇
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Simon Grimm @galaxies.dev · 06/07/2026
It's crazy how Fable creates these mockup + explanations for redesigning my game. Absolutely love what's possible today.
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Simon Grimm @galaxies.dev · 06/07/2026
The next few months I’ll probably spend just as much (or more) time on marketing as I do writing code. Weird shift, but it feels like the right one.
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Simon Grimm @galaxies.dev · 03/07/2026
Crossed 500 App Store ratings with Tiny Harvest 🥳
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Simon Grimm @galaxies.dev · 01/07/2026
June 2026 income report for my mobile game Tiny Harvest 🌽 💰 $5,831 revenue 👥 6,145 new players Still blows my mind that this little farming game is becoming a real business.
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Simon Grimm @galaxies.dev · 30/06/2026
Time to set up the next Tiny Harvest Season 😎 As always also creating an Apple Event. Easy way to get more attention!
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Simon Grimm @galaxies.dev · 29/06/2026
Definitely seeing a relation between Apple giving Tiny Harvest traffic and in-app purchases. Distribution really is everything.
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Simon Grimm @galaxies.dev · 23/06/2026
I built an AI voice notes app with React Native. And AI agents wrote most of the code. Call me a vibe coder, but this is how you build great apps in the age of AI 👇
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Simon Grimm @galaxies.dev · 18/06/2026
Next week I’m joining @sentry.io to share how I monitor and debug production issues in Tiny Harvest 🎮 We’ll look at real crashes, debugging workflows, and what changes when you have actual users. Join us 👇 sentry.io/resources/r...
sentry.io
Fixing React Native Apps: Don't Let Bugs Crop Up
Join this hands-on workshop to learn how to find and fix bugs in React Native apps using Sentry. From crash reporting to performance monitoring, get the tools to ship with confidence.
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Simon Grimm @galaxies.dev · 17/06/2026
Not every season is for building. I wrote about a quarter where Tiny Harvest was growing, but it still felt like I built almost nothing 👇 simongrimm.dev/the-quarter...
simongrimm.dev
The Quarter Where I Built Almost Nothing
Tiny Harvest was growing, YouTube was changing, and life felt uncertain. A reflection on the quarter where I built almost nothing.
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Simon Grimm @galaxies.dev · 17/06/2026
When you suddenly remember how work feels after being occupied with life.
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Simon Grimm @galaxies.dev · 12/06/2026
My latest video about AI thoughts seems to resonate with many of you. It’s about what AI has changed for me, why I’ve been building indie apps instead of courses lately, and why my YT channel is changing. Maybe we’re all figuring this out together.
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Simon Grimm @galaxies.dev · 02/06/2026
Are you building apps with React Native? You should probably target TV devices - it's one of the best choices you can make 👇
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Simon Grimm @galaxies.dev · 05/05/2026
I reviewed 3 React Native apps from the community. No AI slop. Just real apps.
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Simon Grimm @galaxies.dev · 23/04/2026
"Pay 2 win." Every player hates these games. Every indie dev fears these comments. And yet here I am, telling you that it’s probably the best way to monetize and actually make money with your app. Here’s why I still use in-app purchases in my game 👇
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Simon Grimm @galaxies.dev · 21/04/2026
How hard is it to run a mobile game alone? Harder than building the game itself. Because building is just one part of it 👇
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Simon Grimm @galaxies.dev · 19/04/2026
Received my very first invoice from @RevenueCat this week after years of using it. Happiest $36 I ever paid 🥰
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Simon Grimm @galaxies.dev · 16/04/2026
You can't please everyone with your app 🤷‍♂️ It's something I recently learned, no matter what you do!
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Simon Grimm @galaxies.dev · 08/04/2026
My indie game made $3,000 in March 👨‍🌾 Here's what I learned 👇
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Simon Grimm @galaxies.dev · 07/04/2026
My indie game made $2,500. Not life-changing… but enough to completely change how I think about building apps. Here’s what it learned so far 👇
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Simon Grimm @galaxies.dev · 02/04/2026
I made a tiny change to my App Store page… and suddenly more people started downloading my game 😍 Your App Store page decides if people even try your app 👋
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Simon Grimm @galaxies.dev · 30/03/2026
I lost over half my players in the first 10 minutes of my game. This is how I (hopefully) fixed the leaking bucket 😅
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Simon Grimm @galaxies.dev · 28/03/2026
Launched my first live community event 🐰 For 14 days, players can find random eggs on their farm and get rewards, while working together on the global goal of collecting 100k eggs 🔥 Might have set the number a bit low, the game has been growing rapidly lately 🙃
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Simon Grimm @galaxies.dev · 27/03/2026
Reviews like this ❤️ Download the game: apps.apple.com/us/app/tiny...
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Simon Grimm @galaxies.dev · 26/03/2026
Close to hitting another big milestone with Tiny Harvest this month. 5 more days 🚀
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Simon Grimm @galaxies.dev · 26/03/2026
Got access to @RevenueCat new AI feature Rico. Love how I can just chat with it in Slack about my games products 😍
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Simon Grimm @galaxies.dev · 24/03/2026
I stopped writing most of my code. AI does it now. So… what does that do to your skills as a developer? I made a video about this 👇
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Simon Grimm @galaxies.dev · 24/03/2026
Have you recently BUILT and RELEASED a React Native app with AI? I'm looking for apps for a new App Review video on YT, so drop your links + info below 👇
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Simon Grimm @galaxies.dev · 21/03/2026
How much longer until I can swap Alexa for a device that actually understands what I’m saying?
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Simon Grimm @galaxies.dev · 20/03/2026
Just hit 200 iOS ratings with Tiny Harvest Time to read the 3 worst ones 🫡
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Simon Grimm @galaxies.dev · 20/03/2026
My game has a very obvious onboarding problem: Once players hit Level 20, they are likely to stick around. But most don't even make it to L5 or L10. Looks like the task for next week is clear: I need a better onboarding!
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Simon Grimm @galaxies.dev · 19/03/2026
AI one-shot a retention analysis for Tiny Harvest 🔥 These are the moment where I truly love the progress of AI. This would have taken me hours, if I had actually pulled together the right data and libraries for the charts. It took less than 3 minutes.
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Simon Grimm @galaxies.dev · 18/03/2026
Spent hours debugging a crash in my app. Turns out it was caused by the iOS Reduce Motion accessibility setting. A reminder that real-world users run your app in environments you never test 😅
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Simon Grimm @galaxies.dev · 17/03/2026
I built a Fire TV app with React Native 👀 Not mobile. Not web. An actual TV app using VegaOS. Here's how to get started 👇
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Simon Grimm @galaxies.dev · 16/03/2026
I built a mobile idle game in under 60 minutes this weekend. It's completely terrible. But shipping something playable in an hour with React Native + Expo is still wild.
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Simon Grimm @galaxies.dev · 13/03/2026
What would I change in my next app? Here are 3 things I would do different if I started Tiny Harvest today 👇
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Simon Grimm @galaxies.dev · 12/03/2026
I am pausing the Rocket Ship Podcast. Here is why 👇
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