Sold-as-is: AI nutrition tracker (4 months solo dev, 47K LOC, Google Play approved, $25K)

TL;DR: I built a production-ready AI nutrition tracker over 4 months (47K LOC, Google Play approved, 12 languages, Architecture C cascade pipeline with GPT-5.4-mini + Claude). Selling for $25K (76% below the $105K+ replacement cost). Pre-revenue but launch-ready. Listed on Little Exits.

The story

I'm Billel, solo dev from France. Over the last 4 months I've been building Calpyra AI - an AI nutrition tracker that scans any meal photo and returns calories + macros + nutrition in 12 languages, in under 3 seconds.

I have 3 other live projects competing for my time (Cal-Halal, Minutiva AI) and Calpyra hit "production-ready" before "marketed". Rather than letting it stagnate, I'd rather see it succeed in operator hands.

What's actually in the box

Codebase metrics:

• 47,165 lines of production code (40K TypeScript frontend + 7K Python backend)
• 293 commits YTD 2026 (4 months solo dev)
• 21 polished screens, 70 React components, 29 Zustand stores
• 24 backend FastAPI endpoints, 142 pytest tests passing
• 12 locale JSON files, 9,600+ translation strings (RTL ready)

AI pipeline (Architecture C):

• Tier 1: GPT-5.4-mini Vision single-pass (88% of scans @ $0.001 each)
• Tier 2: self-consistency N=3 + median merge for ambiguous photos
• Tier 3: GPT + Claude Sonnet 4.5 cross-model ensemble for low-confidence
• Custom-trained YOLOv12 food-detection model (proprietary asset)
• Depth Anything v2 Small ONNX for portion-volume estimation

Distribution:

• Google Play Internal Testing: AAB v1.1.0 (versionCode 20) already approved
• Health Connect Android integration validated on Xiaomi/Pixel
• iOS HealthKit wired (untested binary, ~1-2 weeks to ship)
• Backend live on Railway
• Public landing page (8-screen workflow demo): https://billel-abbas.github.io/calpyra-acquire/

Why $25K

Documented replacement cost: $105K+ (line-by-line in the CIM):

• Mobile app dev: $45K (4 mo solo dev @ $80/h)
• Backend: $15K
• YOLOv12 fine-tuning: $8K
• Architecture C cascade: $12K
• Health Connect integration: $5K
• 12-language i18n (9,600 strings @ $0.50): $4.8K
• ...plus brand, tests, Play Console setup, etc.

At $25K = 76% discount vs. building from scratch.

It's also at the Little Exits Premium cap for pre-revenue listings.

What you'd inherit

• Full GitHub repo ownership (293 commits transferred to your org)
• Google Play Console (Calpyra Studio, $0 transfer fee)
• Railway backend project + Firebase project
• EAS Build pipeline with service account JSON
• Custom YOLOv12 model weights + training pipeline scripts
• 12-language locale files (full IP)
• "Calpyra" brand (trademark-free on USPTO + EUIPO)
• 7-day post-acquisition support

5 personal guarantees

1. 30-day "Build Working" guarantee - full refund if you can't get it running locally
2. Code originality - 100% original or MIT/Apache deps, no GPL contamination
3. Play Store transfer guarantee
4. No hidden costs guarantee - all third-party services itemized
5. Source code completeness guarantee

Where to look

• Listing: https://app.littleexits.com/project/calpyra-ai
• Live demo workflow (real chicken-plate photo through AI scan): https://billel-abbas.github.io/calpyra-acquire/
• Full CIM (13 pages) + detailed P&L (8 pages, YTD 2026 + 12-month projection) available post-NDA

Who wins

• Indie hackers wanting to skip 4-6 months of dev
• Wellness brands / nutrition coaches with audience but no app
• AI/ML engineers wanting a reference cascade pipeline + custom-trained model
• Existing nutrition app owners (rebrand + expand to 12 languages instantly)

Not for: passive investors expecting cash-flow on day 1. MRR is $0 today. Asset is launch-ready, not launched.

Reach out

Drop a comment, DM me here, or message via the Little Exits listing. Happy to do a 30-min technical walkthrough call post-NDA (recorded).

PS - If anyone has feedback on the listing description or the landing page, I'm all ears. First time selling a project, so iterating live.