WISEcode UPF Detector vs Zalza
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WISEcode UPF Detector
Instantly determine if packaged food is ultra-processed by scanning its barcode. This app provides a clear, science-backed UPF rating and ingredient breakdown, powered by an extensive food intelligence platform. Make informed choices about what you eat with detailed ingredient analysis.
- Scan food barcodes
- UPF rating and ingredient breakdown
- Ingredient-level processing analysis
- Science-backed results
- Extensive food intelligence platform
- Fast and clear information
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WISEcode™ UPF Detector Know what's really in your food. Scan any packaged food to instantly identify ultra-processed foods, understand what's in your ingredients, and make more informed food choices. WHY PEOPLE USE WISEcode™ • Scan any barcode for instant food intelligence • Instantly identify ultra-processed foods (UPFs) • Explore ingredient-level insights • Search hundreds of thousands of food products • Receive personalized food recommendations • Save favorite foods and build your personal pantry • Free to download and use GO BEYOND THE LABEL Most food apps stop at the Nutrition Facts panel. WISEcode™ goes further by helping you understand what's actually in your food—not just the calories or nutrients, but the ingredients, how they're used, and whether a product is ultra-processed. No guessing. No confusing labels. Just clear, actionable food intelligence that helps you make more informed decisions every time you shop. FOODTRUTH™ FoodTruth™ is WISEcode's mission to make food information clear, transparent, and accessible to everyone. Whether you're shopping for yourself, your family, or simply trying to make healthier choices, WISEcode™ helps you better understand the foods you eat through ingredient intelligence and ultra-processed food detection. Find Your FoodTruth™. PRIVACY Your privacy matters. WISEcode™ never sells your personal data. Learn more by reviewing our Privacy Policy at WISEcode.ai.
Zalza
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'Zalza' means 'Good night' in Korean. Your healthy life starts with how well you slept last night. From daily vitality and stress management to disease prevention—the core of all health care lies in 'Quality Sleep.' 'Zalza' finds the optimal wake-up time for you to feel most refreshed and guides you toward healthy sleep habits. [Key Features] • Sleep Cycle Calculation: Recommends the perfect wake-up time for you, from 2 to 6 cycles, considering REM and deep sleep stages. • Customizable Fall-Asleep Time: Set the time it takes for you to fall asleep for more precise calculations. • Dual Calculation Modes: Choose between "If I sleep now, when should I wake up?" or "Wake up/Sleep at a specific time" based on your situation. • Sleep Guide: Provides useful knowledge about sleep and tips on how to use the app effectively. • User-Friendly Settings: Features a 24-hour format On/Off mode and personalized cycle time settings. • Global Support: Supports 4 languages (Korean, English, Spanish, and Japanese) for convenient use anywhere in the world. Zalza sincerely cheers for your day. Please share 'Zalza' with your beloved family and friends. Your support is a great motivation for us to provide better service!
Screenshots
Verdict
The clearest difference is ads: WISEcode UPF Detector at none against Zalza's shown. WISEcode UPF Detector also leads on update cadence (every 2 weeks vs every 3 months) and chart position (#94 vs unranked). Zalza's advantage is iOS requirement (15.1 vs 17.6). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
WISEcode UPF Detector ships an update every 2 weeks, Zalza every 3 months. The most recent releases landed on October 30, 2026 and October 9, 2026 respectively.
| Parameter | WISEcode UPF Detector | Zalza |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (1.8K ratings) — better | — |
| Positive reviews | 83.8% of reviews | — |
| Number of ratings | 1.8K — better | — |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #94 — better | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 186 MB | 33 MB |
| Age rating | 4+ | 17+ |
| Developer | WISEcode | YEEUN KIM |
Bugs and requests
WISEcode UPF Detector
Reported bugs
19 issues- Can’t scan first item
- Scanner not working
- Scan button gets finicky
- Product not in database
- Won’t stop asking to do a review
Show 14 moreShow fewer
- Old version better
- High Fructose listed as excellent
- Does not tell you a product contains bioengineered ingredients
- Too many items are not part of the WISECode database
- Needs a way to clear history
- Needs to turn on the flashlight when scanning labels
- Nothing I scanned has been recognized
- It wants a photo of everything I scan
- Nothing I scanned showed up in their database
- You scan products it does nothing
- Was working fine and now it doesn’t work at all
- Most of the time can’t find item
- It won’t open past the welcome page
- Why doesn’t the scan work?
Requested features
6 requests- Search food without scanning barcode
- Wise score directly under food rating
- Manual input for food items without barcodes
- Way to clear history
- Turn on flashlight when scanning labels
Show 1 moreShow fewer
- Include nutrition information or way to tell how nutritious food is
Zalza
Not enough reviews yet to summarise bugs or requests.
In-app purchases
WISEcode UPF Detector
No in-app purchases
Zalza
No in-app purchases
Questions
Is WISEcode UPF Detector free?
Is Zalza free?
Do WISEcode UPF Detector or Zalza have ads?
Which is updated more often, WISEcode UPF Detector or Zalza?
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