Comparison

ArcFast vs Systema

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

Head to head
About

ArcFast

Track your intermittent fasting with a simple, ad-free timer. Monitor your metabolic phase, view progress charts, and customize your fasting schedule. Includes meal calorie estimates and home screen widgets.

Highlights
  • Ad-free intermittent fasting timer
  • Real-time metabolic phase tracking
  • Fasting streaks and progress charts
  • Customizable fasting schedules
  • Home screen widgets
  • Meal calorie estimation
Features
Read full description

ArcFast is a simple fasting tracker built around a free, no-ads intermittent fasting timer. Start a fast in one tap, follow your fasting window, use reminders and widgets, and review your history without clutter. KNOW YOUR BODY ArcFast displays your current metabolic phase in real-time as you fast: Sugar Burning transitions into Fat Burning, then Ketosis and Deep Ketosis. Stay informed about what's happening inside your body during every fasting window. SEE YOUR PROGRESS Fasting streaks, weekly bar charts, and detailed session history help you spot patterns and celebrate consistency. Review any missed fasts and learn from your patterns over time. BEAUTIFUL THEMES Four carefully crafted themes — Cosmos, Midnight, Cloud, and Linen — let you personalize ArcFast to match your style. Your fasting experience should feel as good as it looks. FLEXIBLE FASTING PLANS Choose from popular presets including 16:8, 18:6, 20:4, 22:2, and OMAD — or create a custom fasting schedule that fits your lifestyle. STAY ON TRACK Daily reminders to start and end your fasts, milestone notifications, and streak nudges keep you accountable without the noise. WIDGETS Add ArcFast widgets to your Home Screen for quick at-a-glance fasting status without opening the app. FOOD SCAN Add quick calorie estimates to your fasting routine. Take a photo of your meal and ArcFast gives you a clear estimate of calories and food items, so you can understand what you eat between fasting windows. Estimates are for guidance only and are not medical or nutritional advice. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Systema

Features
Read full description

Systema is a workout tracker built to make training simple, organized, and easy to follow. Track every workout in one place. Record exercise weight, reps, sets, and the difficulty of each set so you always know what you did last time and what to improve next. Create your own workout plans, choose exercises, adjust sets and reps, and keep your training structured without unnecessary complexity. With Systema you can: • Track weight, reps, and sets for every exercise • Rate the difficulty of individual sets • View your workout history • Follow your strength and training progress • Create and manage custom workout plans • Add your own exercises • Track body weight and measurements • Monitor personal records and statistics • Use rest timers during workouts • Add notes to exercises and workouts • Keep your training organized in one place Whether you're trying to get stronger, build muscle, or simply train more consistently, Systema helps you focus on your workout instead of remembering numbers. Train. Track. Progress. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ArcFast4 screens
Systema4 screens

Verdict

The call

The clearest difference is update cadence: Systema at every 4 days against ArcFast's every 6 weeks. On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ArcFast sells 2 in-app purchases, starting at $4.99 per month and Systema sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ArcFast ships an update every 6 weeks, Systema every 4 days. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.

Scorecard1 real difference · 8 level
ArcFast versus Systema: the parameters behind the verdict, then further details
ParameterArcFastSystema
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 6 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS17.016.4 — better
Further details — not scored
Size13 MB90 MB
Age rating4+4+
DeveloperKYRYL PEKAROVNazar Yurkevych

In-app purchases

2 purchases

ArcFast

Subscriptions2
  • Premium Monthly$4.991 Month
  • Premium Yearly$39.991 Year
2 purchases

Systema

Subscriptions2
  • PRO Monthly7 Days trial$4.991 Month
  • PRO Yearly7 Days trial$34.991 Year

Questions

Is ArcFast free?
ArcFast is free to download, with in-app purchases available.
Is Systema free?
Systema is free to download, with in-app purchases available.
Do ArcFast or Systema have ads?
Neither ArcFast nor Systema shows ads.
Which is updated more often, ArcFast or Systema?
ArcFast ships an update every 6 weeks, and Systema every 4 days. Most recently, ArcFast was updated on October 12, 2026 and Systema on October 3, 2026.

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