Comparison

WILLMA vs HydrateLock

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

Head to head
About

WILLMA

Effortlessly track your nutrition with advanced meal scanning technology. Understand your food intake with detailed macro breakdowns and connect with a supportive community to achieve your health goals faster.

Highlights
  • Instant meal scanning via camera
  • Detailed macro tracking (protein, carbs, fats)
  • Vibrant health-focused community
  • Nutrition logging
  • Diet control
Features
Read full description

Is tracking your food taking up too much time? Willma is here to change that. We’ve redesigned your health journey to focus on what matters most: your nutrition. With our advanced Meal Scanning feature, logging your food is as easy as taking a picture. No more typing, no more guessing. Willma helps you understand exactly what you’re eating so you can reach your fitness goals faster. Key Features: Instant Meal Scan: Turn your camera into a nutrition tracker. Detailed Macro Tracking: Monitor protein, carbs, and fats with precision. Vibrant Community: Join others on the same path to a healthier lifestyle. Take control of your diet the easy way. Download Willma and see the difference a scan makes! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

HydrateLock

Features
Read full description

Most water reminders are easy to swipe away—and just as easy to forget. Unlike regular reminders, make drinking water something you have to do HydrateLock you should Pick up your drink and show your cup or bottle to complete the reminder. HydrateLock is built for the moment when a normal notification is not enough. Set your preferred water times, get a short 30-second chance to act, and then receive a persistent alarm. To complete the reminder inside HydrateLock, pick up your drink and show your cup or bottle to the camera. No complicated water logging. No calorie-style dashboards. No guilt. Just a focused reminder that helps turn “I should drink water” into a small physical action. HOW HYDRATELOCK WORKS 1. Choose the times you want to be reminded. 2. When a reminder begins, HydrateLock starts a 30-second grace countdown. 3. If you have not acted, the reminder becomes a persistent system alarm. 4. Open HydrateLock and show your cup or bottle to complete the reminder. 5. Your local daily progress updates automatically. WHY DOES IT LOOK FOR A CUP OR BOTTLE? Because the goal is not to make hydration feel like a test. The goal is to get your drink into your hand. Once you remember—or physically pick up your cup—you are already much closer to taking a sip. HydrateLock deliberately focuses its on-device recognition on common drink containers instead of trying to understand every possible hydration behavior. This focused approach keeps the experience fast, lightweight, and reliable while reducing unnecessary complexity and mistaken detections. It is a purposeful product choice, not a lack of intelligence: HydrateLock uses smart recognition only where it helps you act, without adding more work or pressure. HARDER-TO-IGNORE WATER REMINDERS HydrateLock uses iPhone system alarm experiences so your reminder can remain visible beyond an ordinary notification. The countdown and active reminder can appear through system surfaces such as the Lock Screen, Live Activities, and Dynamic Island on supported devices. You always retain access to iPhone’s system controls. HydrateLock does not attempt to block or override them. FEATURES • Persistent water alarms • 30-second grace countdown • On-device cup and bottle recognition • Flexible daily reminder schedule • Today view with upcoming reminder times • Local daily progress and completion history • Automatic camera opening when an active reminder is detected • Clear permission and privacy controls • No account or sign-in • No subscription, advertising, or analytics in version 1.0 • No cloud connection required PRIVATE BY DESIGN Drink recognition runs entirely on your iPhone using on-device machine learning. Camera frames are processed only while verification is open. They are not saved, uploaded, or shared. Your reminder schedule, settings, and completion history stay in local app storage. HydrateLock does not require an account and does not build a profile about you. SIMPLE, NOT STRESSFUL HydrateLock is designed for people who already know they want to drink more regularly but keep dismissing ordinary reminders. It focuses on remembering and acting—not measuring every milliliter or judging whether you reached a perfect daily score. HydrateLock recognizes the presence of a cup or bottle. It does not measure water volume, verify swallowing, calculate personal hydration requirements, provide medical advice, or diagnose, prevent, or treat any condition.

Screenshots

WILLMA4 screens
HydrateLock4 screens

Verdict

The call

The clearest difference is in-app purchases: HydrateLock at none against WILLMA's 2. WILLMA's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 26.0). On price and ads 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. WILLMA sells 2 in-app purchases, starting at $9.99 per month. HydrateLock asks for nothing beyond the download.

Scorecard3 real differences · 7 level
WILLMA versus HydrateLock: the parameters behind the verdict, then further details
ParameterWILLMAHydrateLock
PriceFreeFree
Rating4.7 (82 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings82 — better—
Update frequencyEvery 5 weeks—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better26.0
Further details — not scored
Size116 MB10 MB
Age rating4+4+
DeveloperWillmaZHUO KANG

In-app purchases

2 purchases

WILLMA

Subscriptions2
  • Willma Premium monthly$9.991 Month
  • Willma Premium yearly$34.991 Year
None

HydrateLock

No in-app purchases

Questions

Is WILLMA free?
WILLMA is free to download, with in-app purchases available.
Is HydrateLock free?
HydrateLock is free to download, with no in-app purchases.
Do WILLMA or HydrateLock have ads?
Neither WILLMA nor HydrateLock shows ads.

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