Comparison

SDay vs WeightSnap AI

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

Head to head
About

SDay

Simplify your life and enhance productivity with this straightforward application. It aims to cut through complexity, offering tools to help you achieve more. Designed for ease of use, it focuses on improving daily routines.

Highlights
  • Life improvement tools
  • Productivity boost
  • Simplified interface
  • Focus on daily routines
Features
Read full description

A super-simple app to improve your life and boost your productivity in a world that is too complicated.

About

WeightSnap AI

Effortlessly track your weight and body metrics with AI-powered photo recognition. Scan scale readings and food plates for instant logging and nutritional estimates. Get personalized insights and analyze trends to support your health journey.

Highlights
  • Instant OCR weight logging from scale photos
  • AI nutritional estimates from food photos
  • Personalized AI insights and trend analysis
  • Track waist measurements and progress photos
  • Smart workout logging with weather data
  • Local data backups and privacy-focused storage
  • Unit conversion for weight, length, and temperature
Features
Read full description

Track your weight effortlessly with WeightSnap, the AI-powered health companion that eliminates manual data entry. Simply snap a photo of your scale, and our advanced OCR technology instantly recognizes and logs your weight. Key Features: •Instant OCR Recognition: Use your camera or gallery to scan scale readings with high precision using native Vision frameworks. •Food & Meal Snap: Snap a photo of your plate to get AI-powered nutritional estimates (calories, protein, carbs, fat) and track your eating habits. •AI Insights: Get personalized reports on weight fluctuations, waist correlations, and trend analysis powered by AI. •Comprehensive Body Metrics: Track waist measurements, custom parameters (like body fat or clothes weight), and progress photos. •Smart Workout Logging: Log indoor and outdoor sessions. Automatically retrieve local weather data (temperature/humidity) to see how environment affects your performance. •Privacy First: Your data stays yours. Enjoy daily local backups and secure storage recovery policies. •Unit Conversion: Seamlessly switch between kg/lb, cm/inches, and Celsius/Fahrenheit. •Integration with Garmin, Fitbit, Withings, Wyze and many other Smart Watches and Scales through HealthKit Whether you're on a weight loss journey or tracking fitness gains, WeightSnap provides the analytics you need to succeed.

Screenshots

SDay4 screens
WeightSnap AI4 screens

Verdict

The call

The clearest difference is ads: SDay at none against WeightSnap AI's shown. WeightSnap AI's advantage is update cadence (every 3 days vs monthly) and monetization model (ad-supported vs freemium). On price, rating, review sentiment and ratings volume 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. SDay sells 3 in-app purchases, starting at $4.99 per month and WeightSnap AI sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for SDay against 5.0 for WeightSnap AI. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews are what separate them: 96% of SDay's written reviews are positive against 100% of WeightSnap AI's.

UpkeepUpdate frequency

SDay ships an update monthly, WeightSnap AI every 3 days. The most recent releases landed on October 18, 2026 and October 5, 2026 respectively.

Scorecard3 real differences · 7 level
SDay versus WeightSnap AI: the parameters behind the verdict, then further details
ParameterSDayWeightSnap AI
PriceFreeFree
Rating5.0 (3 ratings)5.0 (4 ratings)
Positive reviews95.8% of reviews100.0% of reviews — better
Number of ratings34 — better
Update frequencyMonthlyEvery 3 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumAd-supported — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.0 — better15.6
Further details — not scored
Size54 MB84 MB
Age rating17+4+
DeveloperKirill KaravaevOLEG STASYUK

Customer experience

SDay

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews24 reviews
Positive95.8%
Neutral0.0%
Negative4.2%

WeightSnap AI

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

SDay

Subscriptions2
  • SDay Pro Monthly$4.991 Month
  • SDay Pro Annual$49.991 Year
One-time1
  • SDay Pro Lifetime$149.99
2 purchases

WeightSnap AI

Subscriptions2
  • Monthly Premium7 Days trial$7.991 Month
  • Annual Premium7 Days trial$79.991 Year

Questions

Is SDay free?
SDay is free to download, with in-app purchases available.
Is WeightSnap AI free?
WeightSnap AI is free to download, with in-app purchases available.
Which has better reviews, SDay or WeightSnap AI?
SDay and WeightSnap AI are both rated 5.0 out of 5 on the App Store, from 3 and 4 ratings respectively.
Do SDay or WeightSnap AI have ads?
WeightSnap AI shows ads; SDay does not.
Which is updated more often, SDay or WeightSnap AI?
SDay ships an update monthly, and WeightSnap AI every 3 days. Most recently, SDay was updated on October 18, 2026 and WeightSnap AI on October 5, 2026.

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