Plus15
+15 is a fun daily spatial puzzle that is simple but not easy! Built around one rule: divide the grid into exactly 15 regions, and every region must add up to 15. Regions vary in size, every tile is used, and each puzzle has one unique solution. Play a new daily puzzle across Easy, Medium, and Hard difficulties. Clean, distraction-free, and built for deduction... not guessing.
Plus15
+15 is a fun daily spatial puzzle that is simple but not easy! Built around one rule: divide the grid into exactly 15 regions, and every region must add up to 15. Regions vary in size, every tile is used, and each puzzle has one unique solution. Play a new daily puzzle across Easy, Medium, and Hard difficulties. Clean, distraction-free, and built for deduction... not guessing.
Ranked #6864 on TrustMRR
No active subscriptions
theTuna.eth1,510 followers on 𝕏
Revenue is verified with
RevenueCat API key.Last updated: Sep 20, 2026, 10:54 AM
A daily ritual for your brain that demands logic, spatial reasoning, and patience.
Provides a challenging brain exercise through logic and spatial reasoning puzzles.
Audience
Puzzle enthusiasts and individuals looking for daily brain exercises.
Domain Rating
plus-15.com
Ahrefs Domain Rating measures backlink profile strength on a 0 to 100 logarithmic scale.
Market
Tech stack
Backend
Additional info
Privacy focused, no account required.
Screenshot
plus-15.com"+15 is a finished daily puzzle app with a simple, original mechanic and room to grow. I’m selling because the game is likely better suited to someone with existing distribution, ASO experience, social reach, or a portfolio of puzzle games. The core product is built, monetization is in place, and early users have already solved 600+ puzzles. The main opportunity is marketing... getting +15 in front of more daily puzzle players."
M B
Founder of Plus15
Product updates
More startups for sale
View Marketplace
ClaudeKit
ClaudeKit shows the cutoff before it hits, lets you fork risky ideas without damaging the good thread, saves prompts, counts tokens, exports chats, and helps Pro users preserve context before Claude stops mid-task.
Revenue (30d)
$179
Asking Price
$5k
$1k
Multiple
0.5x
AppAlchemy
AppAlchemy is an AI powered no code builder that turns a text description into a working iOS and Android app. Users describe their idea and iterate in chat without writing code. It also includes the original app design tool at design.appalchemy.ai with its own paying subscriber base. Stack: web app, Supabase and Firebase backends, Stripe billing, LLM based generation. Two products, one Stripe account, 300 paying subscribers, 90%+ profit margins, no employees.
Revenue (30d)
$5.9k
Asking Price
$28k
Multiple
0.4x
Sopravo
Sopravo is a private AI meeting recorder for iPhone. It records meetings, transcribes them with speaker labels, and generates AI summaries entirely on-device in 16 languages. Nothing is uploaded: there is no backend, and sync runs through the user's own iCloud. Monetized with subscriptions and a limited lifetime tier via RevenueCat, with a 7-day free trial.
Revenue (30d)
$197
Asking Price
$10k
$5k
Multiple
2.1x
Stealth Venture
C'est un logiciel une logiciel de gestion complète pour les créateurs et leurs équipes, offrant des outils avancés pour optimiser les ventes et l'organisation. Nos tarifs varient entre 39 $ et plus de 1000 $ par mois, avec un essai gratuit de 14 jours, prélèvement de 10 $ à la fin de la période, déduit lors de l'abonnement mensuel.
Revenue (30d)
$2.5k
Asking Price
$40k
$33k
Multiple
1.1x
DissectMac
Reclaim gigabytes in seconds. 100% local and privacy-first.
Revenue (30d)
$207
Asking Price
$4.5k
$4k
Multiple
1.6x
UpLinked B.V.
UpLinked is an AI web app for B2B coaches, consultants and agencies, with a live iOS app and Android in review. It analyses your LinkedIn profile, business, offer and goals, turns that into a 12-week content strategy, then writes posts in your own tone of voice, generates carousels and visuals, plans them and publishes straight to LinkedIn. It learns from your analytics with every post. The goal is not likes, but leads and clients.
Revenue (30d)
$2.9k
Asking Price
$28k
$19k
Multiple
0.5x