Comparison

Ark Nutrition vs System Lock

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

Head to head
About

Ark Nutrition

Effortlessly track your nutrition with advanced AI. Log meals instantly using your camera, voice, or by scanning receipts and barcodes. Get personalized meal plans and track hydration and intermittent fasting.

Highlights
  • AI Photo Logging (Ark Lens)
  • Hands-Free Voice Logging
  • Order & Receipt Scanner
  • Barcode & Label Scanner
  • Intermittent Fasting Tracker
  • Wearable Sync for Readiness Score
Features
Read full description

Ark Nutrition: AI Calorie & Macro Tracker Ark Nutrition is a smart nutrition tracker that eliminates tedious food logging. Powered by advanced AI, log your nutrition instantly using your camera, voice, barcodes, and delivery screenshots. KEY FEATURES: • AI Photo Logging (Ark Lens): Snap a plate or menu. Ark Lens calculates portions and extracts full macro and micronutrient breakdowns. • Hands-Free Voice Logging: Speak naturally (e.g., "Three scrambled eggs and an iced coffee"). Logged in seconds. • Order & Receipt Scanner: Screenshot your DoorDash or Uber Eats receipt for brand-accurate macro logging. • Barcode & Label Scanner: Fast barcode lookup and nutrition label OCR for verified accuracy. • Intermittent Fasting: Track fasts with a 24-hour visual clock, presets (16:8, OMAD), and fasting history. • Pour-to-Log Hydration: Interactive water tracking with daily goals and weekly trends. • Coach Ark & Meal Plans: Personalized coaching with macro-balanced weekly meal plans and easy swaps. • Wearable Sync: Sync steps, sleep, and HRV via Apple Health & Health Connect for a daily Readiness Score (0-100). *Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/*

About

System Lock

Features
Read full description

System Lock transforms focus, discipline, and productivity into a real-life progression system. Instead of endlessly scrolling, complete quests, build streaks, unlock achievements, and earn your screen time through intentional habits and focused sessions. Designed with a gamified RPG-inspired experience, System Lock helps you reclaim control over distractions while turning consistency into progression. System Lock Premium (Subscription Required) A System Lock Premium subscription is required to access the app’s core productivity and focus features, including: • Block distracting apps during focus, study, work, sleep, or deep focus sessions • Create smart schedules for automatic app restrictions • Complete quests and challenges to earn screen time • Track screen time, focus sessions, and usage trends • Unlock achievements, streaks, and progression rewards • Build discipline through gamified productivity systems • Stay intentional with your time and reduce endless scrolling Subscription pricing and available plans are displayed clearly within the app before purchase. Privacy Policy: https://systemlock.app/privacy Terms of Use (EULA): https://systemlock.app/terms

Screenshots

Ark Nutrition4 screens
System Lock4 screens

Verdict

The call

The clearest difference is iOS requirement: Ark Nutrition at 15.1 against System Lock's 17.0. On price, update cadence, ads and in-app purchases 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. Ark Nutrition sells 2 in-app purchases, starting at $4.99 per month and System Lock sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Ark Nutrition ships an update weekly, System Lock every 6 days. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

Scorecard1 real difference · 9 level
Ark Nutrition versus System Lock: the parameters behind the verdict, then further details
ParameterArk NutritionSystem Lock
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyWeeklyEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size52 MB89 MB
Age rating4+9+
DeveloperBelynx LabsMark Angelo Atienza

In-app purchases

2 purchases

Ark Nutrition

Subscriptions2
  • Arkonix Elite Monthly1 Month trial$4.991 Month
  • Arkonix Elite Annual$49.991 Year
4 purchases

System Lock

Subscriptions4
  • System Lock Pro$4.997 Days
  • System Lock Pro$9.991 Month
  • System Lock Pro$19.991 Year
Show 1 more
  • System Lock Pro$49.991 Year

Questions

Is Ark Nutrition free?
Ark Nutrition is free to download, with in-app purchases available.
Is System Lock free?
System Lock is free to download, with in-app purchases available.
Do Ark Nutrition or System Lock have ads?
Neither Ark Nutrition nor System Lock shows ads.
Which is updated more often, Ark Nutrition or System Lock?
Ark Nutrition ships an update weekly, and System Lock every 6 days. Most recently, Ark Nutrition was updated on November 9, 2026 and System Lock on November 5, 2026.

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