Level · Baro vs LunaLock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Level · Baro
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■ The tools you reach for first. Level is a dedicated, oversized, accessible level — a big bubble and a huge degree number you can read at arm's length. iPhone has a level, but it's buried inside the Measure app; Level launches straight to the tool. No internet, no account, no ads, no tracking. Turn on airplane mode and it still works. That's the whole point. Open it and you're leveling — instantly, no menus. No subscription. ------------------------------- ● Two tools in one ------------------------------- • Lay the phone flat for a true bubble level — a single glow tells you when it's dead level. • Stand it on an edge for an angle finder / inclinometer — pitch and roll, 0 to 90°. • A huge degree readout you can read across the room. • Tap "Set zero" to calibrate against any surface — countertops are rarely perfect. ------------------------------- ● Private and offline by design ------------------------------- • Reads only the accelerometer. No microphone, no camera, no network, nothing to upload. Privacy label: Data Not Collected. • Zero network calls after install — provable in airplane mode. • No analytics, no ads, no account. ------------------------------- ● Built to be used by anyone ------------------------------- • Oversized readout for low vision · 64 × 64 pt touch targets · AMOLED black · Azure accent · WCAG-AAA contrast • English · Korean · Japanese · German · French · Simplified Chinese ------------------------------- ● No subscription, no ads ------------------------------- No subscription. No ads. No account. Level joins Magnifier and the rest of Baro — lightweight tools that respect your data. "The tools you reach for first."
LunaLock
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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.
Screenshots
Verdict
The clearest difference is in-app purchases: Level · Baro at none against LunaLock's 1. Level · Baro also leads on iOS requirement (13.0 vs 17). On price, ads 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. LunaLock sells 1 one-off in-app purchase. Level · Baro asks for nothing beyond the download.
| Parameter | Level · Baro | LunaLock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 17 |
| Further details — not scored | ||
| Size | 19 MB | 3 MB |
| Age rating | 4+ | 9+ |
| Developer | Euiseok Kim | 贺 周 |
In-app purchases
Level · Baro
No in-app purchases
LunaLock
- LunaLock Pro$3.99









