Comparison

Sero. vs Judy

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

Head to head
About

Sero.

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Strengthen your mental health in just 5 minutes a day. Personalized training with science-backed games to improve mood, focus, and emotional regulation. Proven results - 42% improvement in mood after one month. How it works: - Smart assessment through interactive games - Short daily training of just 5 minutes - Each game trains a different skill: focus, emotional regulation, memory, problem-solving, and more - Continuous personalization based on your progress - Weekly personal report with progress and metrics Who is it for? - Employees and managers who want to maintain high performance - Parents and students looking to improve focus and capabilities - Anyone who wants to feel sharp, calm, and in control What makes Sero unique? - Based on an innovative research framework (RDoC - NIH) - Developed with experts from leading universities and clinical psychologists - Backed by pilots and field results - 42% improvement in mood after one month The path to mental resilience starts with a small step - try Sero today.

About

Judy

Features
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Stop the yo-yo cycle. Start building habits that last. Most diets fail because they are built for a perfect week, not your real life. They demand rigid tracking, calorie math, and total perfection. When life gets busy, the diet stops. Meet Judy - your nutrition companion designed specifically for the long term. Judy makes sustainable weight loss feel easier, calmer, and more consistent by focusing on behavior, not just numbers. Stay consistent through the ups and downs The secret to lasting weight loss isn't perfection - it’s consistency. Judy is there for the holiday dinners, the office parties, and the late-night cravings. She doesn't "reset" your progress or make you "start over on Monday". She helps you stay connected to your goals every single day, so you never feel like you've failed. Weight loss that feels calmer Tracking shouldn't be a source of anxiety. Judy replaces the stress of calorie counting with a supportive conversation. By removing the obsession with daily numbers, Judy lowers the "mental tax" of dieting, making it easier to stay on track for months and years. Effortless logging in seconds Consistency is easier when it isn't a chore. * Snap a photo of your meal * Send a quick voice note while you walk * Type a few words about what you ate Judy handles the nutrition science behind the scenes so you can focus on living your life. Your personal coach, not a judge Judy talks to you like a warm, knowledgeable friend. She celebrates your wins, validates your struggles, and helps you navigate cravings. If you had a big meal, she doesn't punish you - she helps you enjoy it and move forward. A visual journey, not a spreadsheet We’ve replaced rigid graphs with intuitive visual metaphors that tell you how you’re actually doing: The Battery - Monitor your protein and resilience levels to help manage hunger spikes. The Heart - Track your meal satisfaction. because if you don't enjoy it, it won't stick. The Trail - Watch your weekly progress bloom into a beautiful path. Your trail absorbs every meal, showing you that one choice doesn't define your week. Daily support that actually cares Judy learns your rhythm and checks in with personalized messages. These aren't generic reminders. they are thoughtful check-ins based on your actual day to help you stay mindful and motivated. A fresh start every meal With Judy, there is no "falling off the wagon". There is only eating, logging, and learning. If you are ready for a calmer, easier, and more sustainable way to reach your goals, Judy is ready to walk the path with you. Download Judy today and build the habits that stay with you for life. By subscribing, you agree to our Terms of Use: https://withjudy.com/terms

Screenshots

Sero.4 screens
Judy4 screens

Verdict

The call

The clearest difference is in-app purchases: Sero. at none against Judy's 1. Judy's advantage is update cadence (every 3 days vs every 2 months). On price, ads, device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Judy sells 1 in-app purchase, starting at $14.99 per month. Sero. asks for nothing beyond the download.

UpkeepUpdate frequency

Sero. ships an update every 2 months, Judy every 3 days. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 4 level
Sero. versus Judy: the parameters behind the verdict, then further details
ParameterSero.Judy
PriceFreeFree
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size35 MB81 MB
Age rating12+17+
DeveloperMaayan Bar Noywithjudy, LLC

In-app purchases

None

Sero.

No in-app purchases

1 purchases

Judy

Subscriptions1
  • Judy Premium1 Month trial$14.991 Month

Questions

Is Sero. free?
Sero. is free to download, with no in-app purchases.
Is Judy free?
Judy is free to download, with in-app purchases available.
Do Sero. or Judy have ads?
Neither Sero. nor Judy shows ads.
Which is updated more often, Sero. or Judy?
Sero. ships an update every 2 months, and Judy every 3 days. Most recently, Sero. was updated on October 7, 2026 and Judy on October 11, 2026.

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