Comparison

豆眼AI vs GrindLab

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

豆眼AI

Features
Read full description

1. Automated coffee bean roast level analysis tool 2. Record analysis and related roasting information 3. Flavor wheel and cupping records 4. Particle size analysis

About

GrindLab

Features
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GrindLab turns your iPhone camera into a precision coffee grind analyzer. Snap a photo of your grounds and get instant, micron-level particle size measurements — no extra hardware needed. ANALYZE YOUR GRIND Use computer vision to detect individual particles and measure their size distribution. GrindLab calculates median size, uniformity score, fines percentage, and boulders percentage so you know exactly how consistent your grinder is performing. Calibrate with a coin or ruler for real-world micron accuracy. FOUR GRIND PROFILES Dial in for any brew method with built-in target ranges: - Espresso: 170-300μm - Filter/Pour-Over: 400-800μm - French Press: 750-1000μm - Cold Brew: 800-1200μm TASTE-TO-GRIND RECOMMENDATIONS Log how your coffee tastes — sour, bitter, balanced, weak — and GrindLab connects your flavor feedback to your grind data. BREW TIMER & RECIPES Time your brews with step-by-step guidance for V60, Espresso, French Press, and Chemex. Create custom recipes with your own ratios, steps, and notes. Live Activities put your timer on the Lock Screen and Dynamic Island so you never miss a pour. BREW JOURNAL Track every cup. Log your beans (roaster, origin, roast level, freshness), brew parameters (dose, yield, temperature, time), and tasting notes with star ratings. Search and filter your history to spot trends and refine your process over time. COMPARE & IMPROVE Save analyses and compare them side by side. Overlay distribution charts, view delta metrics, and set a baseline to track how grinder adjustments affect consistency. See your stats at a glance: total analyses, percentage in target range, and weekly trends. DETAILED VISUALIZATIONS Color-coded particle overlays show exactly where fines and boulders live in your sample. Distribution charts, histograms, and pie charts make your data easy to understand and share. PRIVACY FIRST GrindLab processes everything on-device. Your photos and data stay on your iPhone. No account required. No tracking. Whether you're a home barista chasing the perfect espresso or a pour-over enthusiast dialing in a new bag, GrindLab gives you the data to brew better coffee every day.

Screenshots

豆眼AI4 screens
GrindLab4 screens

Verdict

The call

The clearest difference is ads: GrindLab at none against 豆眼AI's shown. GrindLab also leads on update cadence (every 2 weeks vs every 2 months). 豆眼AI's advantage is iOS requirement (16.6 vs 26.0). On price, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

豆眼AI ships an update every 2 months, GrindLab every 2 weeks. The most recent releases landed on September 13, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 3 level
豆眼AI versus GrindLab: the parameters behind the verdict, then further details
Parameter豆眼AIGrindLab
PriceFreeFree
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad — better
Requires iOS16.6 — better26.0
Further details — not scored
Size77 MB32 MB
Age rating4+4+
DeveloperSELITA PRECISION CO., LTD.Nathan King

In-app purchases

None

豆眼AI

No in-app purchases

None

GrindLab

No in-app purchases

Questions

Is 豆眼AI free?
豆眼AI is free to download, with no in-app purchases.
Is GrindLab free?
GrindLab is free to download, with no in-app purchases.
Do 豆眼AI or GrindLab have ads?
豆眼AI shows ads; GrindLab does not.
Which is updated more often, 豆眼AI or GrindLab?
豆眼AI ships an update every 2 months, and GrindLab every 2 weeks. Most recently, 豆眼AI was updated on September 13, 2026 and GrindLab on October 8, 2026.

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