r/startups_promotion

Finally available on Google play : https://play.google.com/store/apps/details?id=com.appstor.dodge\_avion

I’m a solo dev who got super frustrated jumping between MyFitnessPal for food and other apps for logging my workouts and runs, so I built FitSense AI.

It's essentially an all-in-one Fitness tracker. The main goal was to put your workout logging, run tracking, and daily nutrition/food logging natively into one single dashboard. It also features an AI Coach that helps personalize your plans, and there are some advanced tools in there like dynamic rescheduling if you happen to miss a day.

I just pushed my major production update and I'm really trying to get those initial users. I'd love for you guys to give it a try. If you find it actually helpful, leaving an honest rating on the Play Store would seriously mean the world to me and help out the algorithm!

App Link: https://play.google.com/store/apps/details?id=com.fitsense.ai

I built an SMM panel as a side project. Was just going to use it for my own social media work. Three weeks after launching I noticed something weird in my analytics, multiple users were placing the same kinds of orders for completely different domains.

Turns out they were resellers. They'd take services that cost them $0.50 per 1000 followers from me, mark it up to $2-3 per 1000, and sell to their own clients (small businesses trying to look established on Instagram, content creators, local marketing agencies).

The economics are wild for them:

- Their cost: $0.50/1k from me

- Their price: $2.50/1k average

- 80% margin

- Zero fulfillment work, my system handles the actual delivery

One of them messaged me and said he's making $400-600/month reselling to his existing web design clients. He just adds it as a "social media starter package" upsell. Clients have no idea where it actually comes from.

The interesting bit: I built this for myself, but the reseller use case is 10x more valuable. They get a full backend, API access, instant delivery, no inventory risk. I get recurring volume from people who actually understand the product.

If you're running an agency or freelance social media business, the math here is hard to ignore. The setup takes 5 minutes, you copy an API key, make orders, and pocket the difference.

Site is socialraiders.com if anyone wants to see what the API looks like. Curious if anyone here has built reseller flows on top of other people's APIs and what worked.

Hey everyone,

We just launched Portaim.

It’s a tool for Shopify merchants who get messy supplier CSV/XLS/XLSX files and waste hours cleaning them up before import. Portaim maps columns with AI, catches common Shopify data issues, helps fix them, and then lets you export a clean file or send it straight to Shopify.

We built it because this workflow still feels way too manual for a problem so many merchants have.

It’s still early, so I’d genuinely love feedback from anyone who works with product imports, supplier feeds, or Shopify catalog management.

https://portaim.com/

I’ve been trying to promote my Sudoku app (Sudoku Masters) and it’s honestly harder than I expected 😅

This is actually my first milestone as a game developer, so it means a lot to me.

If you have a few minutes, I’d really appreciate it if you could download it and give it a try.
I’m trying to improve it and I’d love to hear your honest feedback — what you like and what I could do better.

📲 https://play.google.com/store/apps/details?id=ro.pcn.sudoku

Thank you so much for your support 🙌

I got really tired of the usual headache: spending hours trying to figure out which model will actually run on my PC, picking the right quant, dealing with crashes, etc.

I built OpenLLM-Studio — a simple desktop app that does the thinking for you.You just open it, it scans your hardware (GPU, VRAM, RAM, CPU), uses AI to recommend the best model + perfect quantization, downloads it from Hugging Face, and you’re chatting with it in minutes.

No Ollama needed. No terminal commands. No guessing.It’s completely free and open source.

If you’ve ever felt overwhelmed trying to run local LLMs, I’d love to know what you think.Drop your GPU + RAM in the comments and I’ll tell you what model the AI wizard recommends for you.GitHub: https://github.com/Icecubesaad/OpenLLM-Studio
Download: https://openllm-studio.vercel.app

So

Hey everyone 👋

I’ve builded a new kind of social network where every post is limited to not more than five words.

The idea is to make content faster, more creative, and less overwhelming — no long posts, just quick thoughts.

I’m genuinely curious:

• Do you think this kind of app has real growth potential?
• Or would it die quickly after the novelty wears off?

If you’re up for trying it and giving feedback:
📱 Android: https://play.google.com/store/apps/details?id=com.fiveapp.app
🌐 Web: https://fiveapplication.com/

I built a $1 startup idea validator that actually roasts you

Most idea validators tell you "great market, strong potential." Mine tells you why your idea will fail.

IdeaRoast runs four AI agents in parallel - market, tech, finance, and timing - each with a specific mandate and live data. You get competitor names with funding amounts, unit economics, your idea's fatal flaw, and a pivot if there's a salvageable version. Verdict in 60 seconds, no account needed.

I built it after spending weeks on products that all fissled out. Would've been nice to know before committing the time and energy.

What's different: It's structured like a forensic report, not a chat. Four separate findings, a survival score, a cause of death, and 3-5 specific actions for the next 7 days. It's optimized to find the flaw, not validate you.

$1 flat. No subscription.

idearoast.dev

Happy to answer questions — especially curious if anyone's used similar tools and what they thought was missing.

I'm excited to finally share CricketDream – a completely free IPL Fantasy & Draft platform I created for Indian cricket fans.What is CricketDream?It's a browser-based platform (no app download needed) focused on making IPL more fun through multiple game modes:

• Fantasy XI Builder: Smart budget management, live player form tracking, C/VC selection, and confirmed Playing XI after toss.
• Real-time 1v1 & Group Snake Drafts: Fully customizable – choose squad size (5/7/11), pick timers (30s/60s/unlimited), Cap/VC on/off, transfers, and more. Includes turn notifications via WhatsApp so you never miss your pick.
• Multi-Match Draft: Draft once and manage your squad across 3 matches, 5 matches, or the entire IPL season like a real franchise owner.
• New: Dynasty Leagues: Create private long-term leagues with friends using a simple invite code. Points accumulate across multiple matches with leaderboards.

Key Features:

• Live points that update after every ball
• Expert match previews and fantasy tips
• No real money, no cash prizes – purely for fun and entertainment
• Works directly in the browser (mobile + desktop friendly)

I built this because most fantasy platforms felt either too complicated or overly monetized. CricketDream is designed to be simple, fair, and genuinely enjoyable for casual and serious fans alike.

Current status: Fully functional and being used during IPL 2026. I'm actively adding features based on user feedback.

Would love your honest feedback, suggestions, or bug reports! Check it out here: https://www.cricketdream.in

Looking forward to hearing what you think!

Most cold outreach tools are either overpriced, locked to Gmail, or both.

GMass is $30-40/month and forces you to send from a Google account. Instantly and Smartlead are even more expensive and overkill if you're a solo founder just trying to reach 500 people a week.

So I built Mailmark — a cold outreach and email platform that runs on AWS SES. You bring your own domain, connect it, and get:

- Custom domain mailboxes (hello@, outreach@, etc.)

- Bulk campaigns with mail merge and personalization

- Multi-stage follow-up sequences that stop when someone replies

- Open and click tracking per recipient

- A full email client in the browser

- REST API + npm SDK for transactional sends

Since it's built on SES, the sending cost is basically nothing — $0.10 per 1,000 emails. The platform itself starts at $10/month.

The target is indie founders and small teams who want proper outreach tooling without enterprise pricing or being stuck inside Gmail.

Still early — would genuinely love feedback from anyone who does cold outreach regularly. What's your current stack and what's the biggest pain point with it?

https://www.mailmark.dev

I started this year from building an iOS app for dancers. And needless to say, I launched to crickets - all downloads only from friends)

Concurrently I watched a lot of video about how great the TikTok UGC marketing is. As I understood, the only thing you need to do is to spend unknown amount of money to find that "viral format" and you are golden 😄
But I'm bootstrapping, so burning money wasn't an option.

Though from TikTok experiments I've noticed that my video posts are dying immediately while few quite terrible carousels still getting some views week after posting.
Reason that I figured out later - they are well-indexed by TikTok search and bring you users weeks and weeks after publishing. So it is a long-tail SEO strategy.

And I decided to double-down on carousels.

Here are the results of my TikTok account after posting 39 days straight:

• around 85 carousels published
• 1090 followers at the time of writing, crossed 1K today and put the link in bio, will see if that will make any difference
• best post got 300k views
• 789k views on account in last 28 days
• this drives roughly 30-50 downloads of my mobile app per day. I mention it subtly from time to time in carousels.

CarouselPoster started as my internal tool to facilitate making 3 posts a day. Now I'm making it a public SAAS
My method is SEO-shaped, not viral-shaped.
- you build a one-time Knowledge Base about your niche (keywords you want to rank for, research from Reddit and forums, style notes, product positioning).
- The AI generates carousel drafts from that Knowledge Base - not from a single prompt like generic tools.
- You refine drafts in a visual editor, swap or AI-generate images, decide where your product gets a mention, and publish straight to TikTok.

I'd be glad to hear from you what do you think about such product and about using carousels for TikTok long-tail traffic. Would you use it?