Build an App with AI · Real example

Snap a photo of your meal; AI estimates calories and macros.

Do the full math on an AI calorie app: €22K revenue and still €5,800 in the minus

This is the real P&L most "my app makes $X" posts skip: ads and AI inference can eat all the revenue.

~€22Kgross revenue
13,300installs
~€5,800still in the minus

Figures as shared by the creator · source

From @SuspiciousSoftware74 on Reddit · Oct 2026

The Short Version

  • What: A solo developer in Germany built a photo calorie tracker, mostly for German speakers, using Gemini on Google Cloud for the AI, and Cursor and Claude Code to build it.
  • Result: He reported about 13,300 installs, 4.7 stars on Google Play and 4.65 on the App Store, about €22K gross revenue and 678 active subscriptions (around $2.2K MRR).
  • Made with: Gemini, Cursor, Claude Code

Source posted Oct 2026Figures as shared by the creatorHow we check sources

The workflow

GoalBuild an App with AI
ScriptGeminiUseCursorUseClaude Code
~€22KResultgross revenue

Made With

GeminiScript · Google's AI assistant for ideas, research and imagesTry Gemini AIMore Cases
CursorUse · AI code editor: describe what you want and it writes and edits the codeTry Cursor AIMore Cases
Claude CodeUse · Anthropic's agentic coding tool that edits files and runs commands in your codebaseTry Claude Code AIMore Cases

Where & With What

What They Did

  1. 1The moveA solo developer in Germany built a photo calorie tracker, mostly for German speakers, using Gemini on Google Cloud for the AI, and Cursor and Claude Code to build it.
  2. 2Step 2Track every cost from day one
  3. 3Step 3Measure payback per ad channel
  4. 4ResultHe reported about 13,300 installs, 4.7 stars on Google Play and 4.65 on the App Store, about €22K gross revenue and 678 active subscriptions (around $2.2K MRR).

Quick Answers

What tools do you need?

Gemini (google's ai assistant for ideas, research and images); Cursor (ai code editor: describe what you want and it writes and edits the code); Claude Code (anthropic's agentic coding tool that edits files and runs commands in your codebase).

How much does it cost?

You can start for $0: Gemini, Cursor have a free plan. Claude Code is paid or trial-based. Check each tool's site for current prices.

Is it allowed?

Follow the platform rules and disclose ads.

Watch out: Self-reported. He says Apple Search Ads never paid back in any month.

Try It Yourself

The prompt · works in Gemini
(Our template, not the creator's prompt.) Build a simple monthly P&L for my AI app: gross revenue, store fees and VAT, ad spend by channel, AI inference cost per active user, tools, and the break-even number of subscribers.

Your first step

Open Gemini, paste the prompt above and swap the [brackets] for your own niche.

Full write-up & sources

More detail: Growth came mainly from Google Ads and Apple Search Ads.

Results: After store fees and VAT about €14,300 landed. Costs: €7,514 Google Ads, €5,356 Apple Search Ads, about €3,900 Google Cloud (mostly Gemini), about €3,000 Cursor and Claude Code, and ~€360 in fees, so he is about €5,800 in the minus before his own time (Reddit, r/SaaS, Oct 2026).

Source: @SuspiciousSoftware74 on Reddit · Oct 2026. Summarised in our own words; figures as shared by the creator or shown on the platform. Updated .

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