BiasProof vs Griller
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BiasProof
This app gamifies cognitive bias training by presenting realistic scenarios to help users identify and resist emotional traps, cognitive errors, and modern scams. It aims to build measurable resistance to thinking pitfalls that affect decisions, relationships, and finances.
- Gamified mental calibration
- Realistic scenario simulations
- Identification of emotional traps and scams
- Measurable resistance tracking
- Progress tracking and leaderboards
- Daily habit building
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Master your biology. Battle your urges. Never get played. BiasProof is the cognitive bias training app that gamifies mental calibration. In realistic scenarios, you'll spot emotional traps, cognitive errors, and modern scams—building measurable resistance to the thinking pitfalls that derail decisions, relationships, and finances. Manifesto: Defend your mind. The world has changed. It's no longer just about "better decisions"—it's about defense. Your biology works against you: Biases like sunk cost keep you in bad jobs; anchoring fleeces you in deals. Your emotions tempt you: Urgency traps push impulse buys; trends override logic. Bad actors exploit you: AI-powered scams (pig-butchering, voice cloning) target human nature, not stupidity. We have antivirus for devices and locks for doors—but nothing for the software in your head. Until now. The Solution: Train like a martial art. BiasProof turns skepticism into a skill. No dry definitions—we simulate attacks: • Fake "urgent" investments • Tempting viral trends • Pressure-filled demands You make judgments, get instant feedback, and learn counter-moves. Progress through levels, earn streaks, badges, and climb leaderboards. Think of it as Strava for your brain. Why it works: Realistic scenarios from behavioral science Immediate feedback for muscle memory Gamification for daily habit (streaks, challenges, progress tracking) Measurable calibration: Track resistance over time Protect yourself from your own brain—and everyone else's scams. Download BiasProof and start training today.
Griller
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Practice job interviews with an AI interviewer that talks, listens, and adapts to your answers — in real time. Get instant feedback, prep for any role, and walk into your next interview confident. WHY GRILLER STANDS OUT • Realistic voice + video AI interviewer (not chat boxes) • Multi-stage flow: recruiter screen, behavioral, technical • Translate any question in 5 languages on tap • Personalized tips after every answer • Daily streak tracking to build a habit KEY FEATURES • Voice-driven conversations — speak naturally, no typing • Multiple roles: Software Engineer, Account Executive, Product Manager • Behavioral interview analysis with STAR-style feedback • Technical question banks • Real-time translation across English, Russian, Spanish, Portuguese, Turkish • Tips and insights on every question • Daily streak gamification PERFECT FOR • Recent grads landing their first role • Career switchers preparing for new industries • FAANG and Big Tech interview prep • Anyone tired of mock interviews with friends GRILLER PRO Free tier: 10 minutes per day. Upgrade for unlimited time: • Unlimited Grill Time • Advanced Behavioral Analysis • Unlimited Role Mock Interviews • Priority AI Processing Available as monthly or annual subscription. Cancel anytime in your App Store settings. SUBSCRIPTION INFO Payment will be charged to your Apple ID account at confirmation of purchase. Subscription auto-renews unless turned off at least 24 hours before the end of the current period. Account will be charged for renewal within 24 hours prior to end of current period. You can manage and cancel subscriptions in your App Store account settings. Privacy Policy: https://griller-backend.titech.dev/privacy-policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Griller at every 3 weeks against BiasProof's every 2 months. BiasProof's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. BiasProof sells 1 one-off in-app purchase and Griller sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
BiasProof ships an update every 2 months, Griller every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | BiasProof | Griller |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 10 MB | 43 MB |
| Age rating | 12+ | 4+ |
| Developer | Justin Neuman | Renat Bilalov |
In-app purchases
BiasProof
- BiasProof Pro - LIfetime Access$4.99
Griller
- Weekly$4.997 Days
- Premium Monthly$7.991 Month
- Premium Annual Subscription$69.991 Year









