Zerra vs Winter Arc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zerra
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Quit sugar, stay sugar free, and finally take control of your cravings with Zerra. Zerra combines a powerful Sugar Tracker, AI Sugar Scanner, and No Sugar Challenge to help you reduce sugar, build healthier habits, and stay accountable every day. Whether you're trying to lose weight, improve energy, reduce cravings, or start a sugar detox, Zerra gives you the tools you need to succeed. — NEW: AI SUGAR SCANNER — Wondering how much sugar is hiding in your food? Simply scan your food with Zerra's AI Sugar Scanner and instantly discover the estimated sugar content in meals, snacks, desserts, drinks, and packaged foods. • Scan any food with your camera • Discover hidden sugar in seconds • Get instant sugar estimates • Make smarter food choices • Stay on track with your sugar-free goals See Hidden Sugar in a Snap. — HOW IT WORKS — Start your No Sugar Challenge. Track your progress. Beat cravings. Build lasting habits. Zerra is built around one simple idea: small daily wins create long-term transformation. Every craving resisted. Every sugar-free day completed. Every streak maintained. It all adds up. — FEATURES — AI Sugar Scanner Scan food and instantly estimate its sugar content. Discover hidden sugar before you eat. Sugar Tracker Track your sugar-free journey, monitor progress, and stay accountable every day. 7-Day No Sugar Challenge Join a structured challenge designed to help you quit sugar and build momentum fast. SOS Craving Button When cravings hit, get immediate support and guidance to stay on track. Daily Check-Ins Log your mood, cravings, meals, and progress to strengthen your awareness and consistency. Progress Dashboard View sugar-free days, cravings resisted, streaks completed, and personal milestones. Journal Reflect on your journey, identify triggers, and celebrate victories. Streak Tracking Build momentum and stay motivated as your sugar-free streak grows longer every day. — PERFECT FOR — • Anyone trying to quit sugar • People starting a sugar detox • Anyone doing a no sugar challenge • Weight loss and healthy eating goals • Reducing cravings and emotional eating • Building long-term healthy habits • Improving energy and focus • Making smarter food choices — START YOUR SUGAR-FREE JOURNEY TODAY — The first day is always the hardest. Zerra helps make it easier with a Sugar Tracker, AI Sugar Scanner, craving tools, daily accountability, and a proven No Sugar Challenge. Download Zerra today and discover how much hidden sugar is really in your food. Your sugar-free journey starts now. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.zerraapp.com/privacy.html
Winter Arc
This app helps you build lasting habits by focusing on consistency over perfection. It uses principles from behavioral psychology to make habits obvious, attractive, easy, and satisfying. Track your progress with visual cues and built-in rest days.
- Four laws of behavior change implementation
- Habit stacking and pairing
- Two-minute rule for easy habits
- Streak tracking with 'never miss twice' nudge
- Countdown ring and compounding chart
- Weekly review and streak freezes
- Identity statements and reminders
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"I want to get fit" can wait until Monday. Then next Monday. Then January. A winter arc can't. It has a finish line. Pick 30, 60 or 90 days. Decide who you're becoming. Then get on with it. WHAT IT ACTUALLY DOES Winter Arc takes the four laws of behaviour change from James Clear's Atomic Habits and turns them into things you do, rather than things you read about. Make it obvious. Decide when and where each habit happens, and stack it onto something you already do. "After I pour my coffee, I will..." No relying on remembering. Make it attractive. Pair the thing you should do with something you want to do. Podcast and a walk. Coffee and ten pages. Make it easy. Every habit gets a two-minute version for the bad days. "Read ten pages" becomes "open the book". Something beats nothing. Make it satisfying. Tick it off, watch the chain grow, see the ring move toward your finish line. Your brain likes proof. This gives it some. THE BIT THAT MATTERS Day one to ten is easy. Then it's day seventeen, it's raining, you slept badly, and you can't be bothered. That's the part that decides it. So Winter Arc doesn't punish you for missing. Miss one day and nothing happens. Miss two in a row and it says something, because two is where a habit quietly becomes a former habit. Rest days are built in. You're aiming to get back to it, not to be perfect. IN THE APP A countdown ring: day 37 of 90, always in view Don't-break-the-chain calendar for every habit Streaks, with a never-miss-twice nudge when you slip The 1 percent compounding chart, with your position marked on it A weekly review: what worked, what didn't, one thing to change Streak freezes for planned rest days Reminders at your habit time, plus one evening check An identity statement on your home screen, in case you forget who this is for NO ACCOUNT, NO FEED, NO ADS Everything lives on your phone. There's nothing to sign up for, no server holding your habits, and nobody watching your streak. Delete the app and the data goes with it. Free. All of it. Not affiliated with or endorsed by James Clear. The four laws of behaviour change are his work, from Atomic Habits (2018).
Screenshots
Verdict
The clearest difference is in-app purchases: Winter Arc at none against Zerra's 3. Winter Arc also leads on iOS requirement (16.4 vs 26.0). On price, update cadence, ads 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
Both are free to download. Zerra sells 3 in-app purchases, starting at $4.99 per 7 days. Winter Arc asks for nothing beyond the download.
Zerra ships an update monthly, Winter Arc every 3 weeks. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.
| Parameter | Zerra | Winter Arc |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.5 (2 ratings) — better |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 26.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 38 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Pankaj Wadhwa | Max Whicher |
In-app purchases
Zerra
- Weekly$4.997 Days
- Monthly$7.991 Month
- Yearly$39.991 Year
Winter Arc
No in-app purchases








