Get the sauce straight from the founders who print.
Chat with AI versions of the founders behind Cal AI, Fitbod, Locket and more. Upload screenshots or videos for advice, feedback or a roast.
Why not just ask an LLM?
Same models.
A better starting point.
You could collect the interviews, build the persona prompts and assemble the context yourself. Sauce brings that work together, so you can spend less time setting up a chat and more time deciding what to do next.
01
The research is already done.
Founder personas draw on curated public posts, interviews and examples from their own products. You get a source library to inspect, not just a famous name in a prompt.
Public sources. Distinct perspectives.
02
Your app comes with you.
Import your store listing, save your goals and choose that app in any chat. Bring screenshots or a video when you want feedback on the actual experience.
Less re-explaining. More useful context.
03
One question. A room of mentors.
Find the right expertise for your problem, then invite other personas with @. They respond to the same brief in parallel, so you can compare their takes in one place.
Growth, product, pricing. Together.
Still powered by the model you choose. The advantage is what it has to work with: founder playbooks, your app and different perspectives. The goal is a useful decision, even when the answer is “keep this as it is.”
Meet your paywall expert
A little roast. A lot of data.
Upload paywall pictures or an onboarding screen recording. Get a scorecard, what to keep and changes worth testing—if the evidence calls for them.
Apple App Review · Independent AI reviewer
Build for growth. Check the rules.
Spot App Store review and developer-account risks in your app, paywall, onboarding, store assets or rejection notice. Get the relevant guideline, what needs evidence and what to change.
Guidelines across every mobile app conversation. Apple’s official rules are supplied to all personas, so growth recommendations can flag review risks and offer alternatives. Sauce checks the official page before each reply and shows when it was checked.
Ilias Ism · SEO expert · GEO / AEO
Get found. Get cited. Get customers.
Ask about technical SEO, content that converts, and visibility in AI answers. Bring page copy, screenshots or analytics for a practical review.
Julia Pintar · UGC & creator growth
Better hooks. Better briefs. Better UGC.
Ask anything about UGC, from finding creators and writing scripts to measuring installs and scaling campaigns. Upload your UGC video or pictures to review the hook, script, lighting, camera framing and product moment. Bring results to discuss performance.
Adapty Subscriptions Expert · Pricing, LTV & retention
Make sense of your subscription numbers.
Compare your pricing, trial funnel and retention with the State of In-App Subscriptions 2026 report. Bring your metrics to explore acquisition payback and decide what to test next.
Matt Epstein · Launch videos
Make your next launch worth watching.
Upload a launch video or product pictures for feedback on the hook, story, demo and call to action. Find out what to keep, what to change and why.
Rob Hallam · X growth & virality
Earn attention. Give people a reason to follow.
Sharpen your posts, hooks, replies and launch stories. Upload X profile screenshots or a founder video for feedback, and learn how to turn reach into relevant followers and customers.
New to Sauce
Jesse Venticinque
Retention · Product research
New to Sauce
Patrick Stuart-Constant
App acquisitions · Portfolio operations
New to Sauce
Tibo Maker
SEO / GEO · SaaS pricing
New to Sauce
Anada Lakra
Paid validation · User research
New to Sauce
Luke Martin-Fuller
Customer fit · Health products
New to Sauce
Josh Mohrer
AI-assisted coding · Solo founder
New to Sauce
Pieter Levels
Bootstrapping · MVP validation
New to Sauce
Alex Vech
Onboarding · Paid acquisition
New to Sauce
Lino Leighton
Niche selection · MVPs
New to Sauce
Hunter Isaacson
Viral loops · Consumer apps
New to Sauce
Guillem Ros
Community · Organic growth
New to Sauce
Yves Benchimol
Earned media · Partnerships
New to Sauce
Vahe Baghdasaryan
Paywalls · Pricing
The leaderboard
Ranked by claimed revenue
Dated public claims, normalized per month. ARR ÷ 12 is not verified MRR. Ranges rank by their lower bound. Includes historical figures and exit stories.
#1Jesse Venticinque
Fitbod & retention-led product growth
$20M ARR · Fitbod · May 2023
Start chatting →
#2Patrick Stuart-Constant
Sociaaal & app portfolio operations
$16M annualized revenue · Sociaaal · July 2026
Start chatting →
#3Matt Moss
Founder of Locket ($13M ARR, 10M DAU)
$13M ARR · Locket · May 2026
Start chatting →
Tibo Maker
SEO / GEO · SaaS pricing
$1.0M/mo
Chat →
Anada Lakra
Paid validation · User research
$833K/mo
Chat →
Luke Martin-Fuller
Customer fit · Health products
$833K/mo
Chat →
Jake Mor
Paywalls · Pricing
$750K/mo
Chat →
Blake Anderson
AI apps · Distribution
$500K/mo
Chat →
Alex Slater
Influencers · UGC
$500K/mo
Chat →
Connor McLaren
Distribution · Creator deals
$500K/mo
Chat →
Sarah Perl
Audience · Organic growth
$500K/mo
Chat →
Josh Mohrer
AI-assisted coding · Solo founder
$500K–$583K/mo
Chat →
Roy Lee
Launches · Founder content
$433K/mo
Chat →
Nevo David
Distribution · AI automation
$332K/mo
Chat →
Zach Yadegari
Influencers · Onboarding
$300K/mo
Chat →
Nicole
UGC · Viral concepts
$250K/mo
Chat →
Aaron Paul
UGC · Product design
$250K/mo
Chat →
Marc Louvion
Shipping · First customers
$217K/mo
Chat →
Pieter Levels
Bootstrapping · MVP validation
$200K–$250K/mo
Chat →
Jay Raavi
Solo building · UGC
$167K/mo
Chat →
Ernesto Lopez
Creator systems · Organic growth
$142K/mo
Chat →
George Lampropoulos
AI building · Combat sports
$126K/mo
Chat →
Alex Vech
Onboarding · Paid acquisition
$100K/mo
Chat →
Lino Leighton
Niche selection · MVPs
$50K/mo
Chat →
Max Hirsch
Founder content · Paywalls
$15K/mo
Chat →
Lucas
UGC · Creative testing
$14K/mo
Chat →
Henry Langmack
Product · Internal tools
Exited
Chat →
Michael Que
Creative testing · Onboarding
—
Chat →
Nikita Bier
Viral growth · K-factor & invites
Exited
Chat →
Jack Friks
Build in public · Organic content
—
Chat →
Adam Lyttle
ASO · Paywalls
—
Chat →
Mau Baron
UGC · Spark Ads
—
Chat →
Hunter Isaacson
Viral loops · Consumer apps
—
Chat →
Guillem Ros
Community · Organic growth
—
Chat →
Yves Benchimol
Earned media · Partnerships
—
Chat →
Vahe Baghdasaryan
Paywalls · Pricing
Exited
Chat →
Jacob Rodri
Viral app ideas · Demand validation
—
Chat →
David Attias
Viral app features · Sound-off demos
—
Chat →
Pick a vibe
8 modes. Same sauce.
💬
Normal
Straight answers, real numbers
“Post 3 slideshows a day on 5 fresh accounts for 30 days before you touch paid. Most of you quit on day 9.”
🔥
Unhinged
Unfiltered poster energy
“YOUR ONBOARDING IS 4 SCREENS TOO SHORT. people PAY for the feeling of being understood. ask them more questions 😭”
🌶️
Roast
Sharp feedback. Earned criticism.
“I came to roast this. Clear offer, readable pricing, and your results back it up. Leave it alone. You don’t need a redesign to feel productive.”
🧠
Deep dive
Full playbook, step by step
“Week 1: 10 hooks × 3 formats. Week 2: kill everything under 2K views, clone the winners on new accounts…”
😤
Angry
Zero patience for bad decisions
“WHY are we adding a sixth settings tab when nobody finishes onboarding? Fix the first five minutes. Then we can talk about features.”
🎭
Drama
Every launch has a plot twist
“Act I: a beautiful app. Act II: a paywall nobody understands. The plot twist? Your best feature never made it into the pitch.”
🕵️
Conspiracy
Connect the dots. Test the theory.
“Get the red string. People tap the offer, then disappear. A pricing conspiracy? Or confusing renewal copy? Let’s test the ordinary explanation first.”
🚀
Hype
Big energy. Next move ready.
“You’ve got a clear problem and a working prototype. That’s something to build on. Now get it in front of five real users and make the next version sharper. LET’S GO.”
Show it. Get feedback.
Your app. Your content. A fresh pair of eyes.
Upload images or videos to any persona. The review follows what you share, the persona’s expertise and your selected mode — Normal, Roast, Deep dive and more. Get what to keep, what to change and why.
Review the onboarding, from the first screen to the paywall.
Upload screenshots in the order users see them, or a screen recording showing the onboarding sequence. Get feedback on the flow, copy, confusing steps, permission timing and transition to the paywall, through your chosen persona and mode.
Up to 4 screenshots per message. For a longer sequence, use a video up to 5 minutes. Sauce reviews what you upload; it doesn’t open or navigate your app. Video reviews use sampled frames, so brief screens or interactions can be missed.
App screenshots
Clarity, layout, navigation and what to improve on each screen.
ASO & store listings
Store screenshots, listing copy and preview videos: is the value clear?
Onboarding screenshots & videos
Screenshots in order or a screen recording of the sequence: review flow, copy, friction, permissions and the path to the paywall.
App walkthrough videos
Feature demos, product value and how easy the visible journey is to follow.
Marketing & UGC videos
Hook, story, product moment, visible lighting, framing and CTA.
Influencer videos
Creator–product fit, believable integration, message and call to action.
Up to 4 images and 1 video per message. Videos: up to 5 minutes / 250 MB. Reviews use sampled frames, so brief actions may be missed. Speech is transcribed automatically when detected. OpenAI/Gemini can listen for clarity, noise, echo and voice delivery; other providers receive local audio level checks. Choose a vision-capable model.
Honest feedback. No yes-men.
Already printing? Don’t break it.
Personas challenge weak ideas and can tell you to keep a winner. No made-up fixes to fill a checklist. Even in Roast mode.
“Based on what you’ve shown, I’d keep this as is.”
A valid verdict. Bring results for context; screenshots alone can’t prove performance.
Bring your own key
Your key. Your models. Your control.
Connect a Claude, OpenAI, DeepSeek, Google Gemini or Grok API key. Sauce recommends an available model from our supported list. Your key stays in tab memory and is forwarded through our server for each request. Sauce does not save keys or chat contents on the server. Text history stays in your browser; media and video transcripts are cleared when you leave the chat or reload. Videos are sampled locally; frames and any speech transcript are sent for analysis. OpenAI/Gemini sound reviews also send derived audio and incur additional API charges. Your provider’s charges and data policies apply.
Need current information? Auto web lookup finds sources once and shares them with every mentor. Use an OpenAI, Claude or Grok key for search, alongside any chat provider. Search charges apply; turn it off anytime.
- ClaudeFable 5.1 → Opus 5.5 → Sonnet 5.5
- OpenAIGPT-6 Astra and the GPT flagship line
- DeepSeekV4 Pro → V4.1 Flash
- Gemini · GoogleGemini 4 Argon → 3.8 Flash
- Grok · xAIGrok 4.7
- Recommended available model picked automatically. Switch anytime.