Comparison

No Sugar Challenge vs Sour

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

Head to head
About

No Sugar Challenge

This app helps you quit sugar with a simple daily check-in. Track your sugar-free streak, estimate sugar avoided, and identify personal triggers. Choose from various challenge lengths and customize your detox plan.

Highlights
  • Daily sugar-free check-in
  • Sugar-free streak counter
  • Estimated sugar avoided tracking
  • Customizable challenge plans
  • Weekly stats and insights
  • Evening reminders
  • Shareable progress cards
Features
Read full description

No Sugar Challenge — Quit sugar with one tap a day. Are you looking for a simple sugar detox tracker? Every other sugar tracker forces you to log every meal, scan barcodes, track calories, or pay for a subscription. This no sugar diet app is different. Open the app, tap Sugar Free or Sweet Day, and you are done. HOW IT WORKS - Pick a plan: Start a 7 day, 21 day, or 30 day no sugar challenge, up to 365 days. - Each evening, tap once: Sugar Free or Sweet Day. - Watch your sugar free streak grow and your sugar avoided pile up. - Tag your Sweet Days to learn your weak spots and overcome your sugar addiction. FEATURES - Sugar-free streak counter: Build a habit and do not break the chain. - Sugar Avoided: Track estimated grams, sugar cubes, and cans of Coke. - Calendar view: A simple health challenge calendar that fills with green. - Weekly stats: Break down your sweet day reasons and see your progress. - Evening reminder: So you never forget to check in. - Shareable streak cards: Show off your no sugar challenge tracker success. - Natural vs added sugar mode: Eat fruit and low sugar diet meals without guilt. - 100% free, offline sugar tracker: No account, no ads before check-in. Your data never leaves your phone. MULTIPLE PLANS - 7-Day Kickstart: Reset your sweet tooth. - 30-Day No Sugar Challenge: Build a lasting sugar free habit. - 100-Day Challenge: Change your palate completely. - 365-Day Sugar Free Year: Go all the way. - Weekdays Only: Weekends free. - Custom Plan: Your own rules for your sugar detox. WHAT THIS APP WILL NEVER DO - No calorie tracking (true sugar intake tracker no calories) - No weight tracking - No barcode scanner - No food database - No paywall or trial - No account or email required Whether you want to cut sugar, start a sugar free challenge, or just need a simple quit sugar tracker app, start your sugar free days today. Your body will thank you.

About

Sour

Features
Read full description

Scan any label. See the teaspoons hiding in it. Sour is a gentle companion for cutting added sugar — no judgment, no deprivation, no shame. Point your camera at a barcode and see what's really in there, in teaspoons, in about two seconds. Then start your first week. Download free. WHAT'S INSIDE - Barcode scanner that surfaces hidden added sugar - Daily tracking, designed to take seconds - no weighing, no grams - AI meal logger - describe what you ate, get the math - Streak system with science-backed milestones - Knowledge hub: why sugar affects sleep, mood, focus, skin - Calorie + macro guide to anchor a healthy baseline - Recipes that earn their sweetness honestly - Lemo, your steady companion through the ups and dips YOUR FIRST WEEK The first 24 hours are the hardest. Sour walks you through them. After three days, the cravings start to quiet. After two weeks, food you used to love starts tasting different. Sour keeps you company through all of it. SUBSCRIPTION Sour Premium unlocks the full experience: $8.99/month or $44.99/year (3 days free). Manage or cancel anytime in iOS Settings. PRIVACY We collect only what we need to run the app. Your data is yours. Read more at getsour.app/privacy. TERMS Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ DISCLAIMER Sour is for general wellness, not medical advice. Talk to a healthcare provider before changing your diet — especially with diabetes, an eating disorder, medication, or pregnancy.

Screenshots

No Sugar Challenge4 screens
Sour4 screens

Verdict

The call

The clearest difference is in-app purchases: No Sugar Challenge at none against Sour's 2. Sour's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price, 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. Sour sells 2 in-app purchases, starting at $8.99 per month. No Sugar Challenge asks for nothing beyond the download.

UpkeepUpdate frequency

No Sugar Challenge ships an update every 2 months, Sour every 3 weeks. The most recent releases landed on October 11, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 6 level
No Sugar Challenge versus Sour: the parameters behind the verdict, then further details
ParameterNo Sugar ChallengeSour
PriceFreeFree
Rating4.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size40 MB52 MB
Age rating4+4+
DeveloperSeulki EomBartolomeo Steccanella

In-app purchases

None

No Sugar Challenge

No in-app purchases

2 purchases

Sour

Subscriptions2
  • Sour Premium Monthly3 Days trial$8.991 Month
  • Sour Premium Yearly$44.991 Year

Questions

Is No Sugar Challenge free?
No Sugar Challenge is free to download, with no in-app purchases.
Is Sour free?
Sour is free to download, with in-app purchases available.
Do No Sugar Challenge or Sour have ads?
No Sugar Challenge shows ads; Sour does not.
Which is updated more often, No Sugar Challenge or Sour?
No Sugar Challenge ships an update every 2 months, and Sour every 3 weeks. Most recently, No Sugar Challenge was updated on October 11, 2026 and Sour on October 5, 2026.

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