Comparison

LunaLock vs Camera Scale for Grams AI Mass

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

Head to head
About

LunaLock

Features
Read full description

LunaLock is the period tracker that actually keeps your data private. No cloud sync. No accounts. No data collection. Your period data stays on your device, period. Unlike other period apps that upload your most personal health data to remote servers, LunaLock was built from the ground up with one principle: your data never leaves your phone. FREE FEATURES: - Log period start and end dates with haptic feedback - Smart cycle prediction with confidence ranges (not just averages) - Track 6 common symptoms: cramps, bloating, headache, fatigue, acne, mood swings - Log your daily mood with 6 mood options - Record flow level from spotting to heavy - Calendar view with period and prediction markers - FaceID and PIN lock with emergency shake-to-lock - Auto-lock timer for extra security - Period reminders with customizable advance notice - Onboarding privacy promise - Delete all data anytime - No ads, no accounts, no tracking PRO FEATURES (one-time $3.99 purchase): - Trend charts for cycle length, symptom frequency, and mood patterns - Data export as PDF for doctor visits or JSON for other apps - Home screen widget with countdown and cycle day - 5 beautiful color themes (Luna, Rose, Ocean, Forest, Sunset) - HealthKit write-only integration (optional) - Monthly and annual cycle reports - Emergency shake-to-lock - All future updates included WHY LUNALOCK? Other period apps like Flo and Clue require accounts, collect your data, and use subscriptions. LunaLock is different: - $3.99 once, not $4.99/month forever - Zero data collection - we literally cannot see your data - FaceID lock means even someone borrowing your phone cannot see your period info - Emergency shake-to-lock for when you need instant privacy LunaLock. Your period. Your phone. Nobody else's.

About

Camera Scale for Grams AI Mass

Features
Read full description

Mass Ai turns your camera into a smart scale. Point at almost anything and get an instant weight estimate with an honest range and a confidence read, so you always know how much to trust the number. No physical scale required. HIGHLIGHTS. - Instant weight from a photo. Capture or choose a photo and see an estimated weight in seconds. - Honest by design. Every result shows a low to high range and a LOW, MEDIUM or HIGH confidence level, never just a single guess. - More accurate with a reference. Place a coin, card or banknote in the frame to anchor the scale and tighten the estimate. Free for everyone. - Metric and imperial. Switch anytime between grams, kilograms, ounces and pounds. - A clean history. Every scan is saved with its photo, time, category and confidence. - Completely private. All data stays on your device. No account, no sign up, no tracking. DESIGNED FOR HOW YOU WEIGH - Cooks and bakers. Estimate flour, cheese, pasta and portions without the kitchen scale. - Resellers and shippers. Estimate parcel weight before the post office and match it to carrier tiers. - Fitness and portions. See a rough calorie and macro context for a serving. - Hobbyists and the curious. Coins, jewelry, crafts, fishing, or simply how heavy is that. MASS PRO - Reference calibration, unit switching, history and one AI follow up question per day. - Unlimited scans with no daily cap. - Multi object detection with a combined total for everything in one photo. - Kitchen mode with cups, tablespoons and rough calories. - Shipping mode that maps weight to carrier tiers and flags price breaks. - Batch sessions with a running total, search and filter, unlimited history, and CSV and PDF export. - Tap any result to reveal the reasoning behind the number. PRIVACY Your scans and photos never leave your device, except the single image sent securely for analysis at the moment you scan. IMPORTANT Mass provides AI estimates for general and informational use only. It is not a certified measuring device. Do not rely on Mass for medical, legal or commercial sale by weight. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

LunaLock4 screens
Camera Scale for Grams AI Mass4 screens

Verdict

The call

The clearest difference is price: LunaLock at Free against Camera Scale for Grams AI Mass's $1.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

LunaLock is free to download; Camera Scale for Grams AI Mass costs $1.99 up front. LunaLock sells 1 one-off in-app purchase and Camera Scale for Grams AI Mass sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference ยท 5 level
LunaLock versus Camera Scale for Grams AI Mass: the parameters behind the verdict, then further details
ParameterLunaLockCamera Scale for Grams AI Mass
PriceFree โ€” better$1.99
Update frequencyโ€”Every 2 months
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17 โ€” better18.6
Further details โ€” not scored
Size3 MB3 MB
Age rating9+4+
Developer่ดบ ๅ‘จAneesh Pradeep

In-app purchases

1 purchases

LunaLock

One-time1
  • LunaLock Pro$3.99
2 purchases

Camera Scale for Grams AI Mass

Subscriptions2
  • Mass Pro โ€” Monthly$4.991 Month
  • Mass Pro โ€” Annual$24.991 Year

Questions

Is LunaLock free?
LunaLock is free to download, with in-app purchases available.
Is Camera Scale for Grams AI Mass free?
Camera Scale for Grams AI Mass costs $1.99, and also offers in-app purchases.
Do LunaLock or Camera Scale for Grams AI Mass have ads?
Neither LunaLock nor Camera Scale for Grams AI Mass shows ads.

Other comparisons