Comparison

ZenFast vs Ai Calories Deficit Tracker

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

Head to head
About

ZenFast

Features
Read full description

ZenFast, fasting that adapts to real life, your schedule rules. Whether you're new or experienced, ZenFast's intelligent tracker syncs with YOUR rhythm. ā—‡ Dynamic Fasting Windows Smart algorithms adjust fasting phases based on actual meal times - no rigid clocks. ā—‡ Effortless Logging Tap-to-record with 15-min precision + food emojis. Meal tracking made joyful. ā—‡ Motivation Engine Live progress ring + calendar heatmap + shareable achievement cards. Celebrate every win. 4 science-backed plans, start your 7-day free trial → Find YOUR sustainable fasting rhythm! *Consult a doctor before fasting. Not a medical solution.* Feel free to contact us: Official Website: https://www.beibitech.com Official Email: zenfast@beibitech.com

About

Ai Calories Deficit Tracker

Features
Read full description

Calories Deficit is a minimal, no-nonsense app for tracking weight loss through calorie deficit. The science is simple: a deficit of 7,700 kcal burns 1 kg of fat. Log your weight, calories eaten, and calories burned each day — the app handles the rest. WHAT YOU TRACK • Daily weight (kg) • Calories eaten • Calories burned • Optional notes WHAT YOU SEE • Today's deficit and estimated fat lost or gained • 7-day moving average weight • Charts for weight trend, daily deficit, and cumulative fat evolution • Weekly summaries with averages for eaten, burned, and deficit • Full entry history with edit support KEY FEATURES • No account, no cloud — all data stays on your device • Dark and light mode • Clean, distraction-free interface • Works fully offline Whether you're cutting for summer, following a diet plan, or just staying consistent — Calories Deficit gives you the numbers that matter, nothing else.

Screenshots

ZenFast4 screens
Ai Calories Deficit Tracker4 screens

Verdict

The call

The clearest difference is in-app purchases: Ai Calories Deficit Tracker at none against ZenFast's 2. On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. ZenFast sells 2 in-app purchases, starting at $0.99 per month. Ai Calories Deficit Tracker asks for nothing beyond the download.

Scorecard1 real difference Ā· 5 level
ZenFast versus Ai Calories Deficit Tracker: the parameters behind the verdict, then further details
ParameterZenFastAi Calories Deficit Tracker
PriceFreeFree
Update frequency—Every 3 days
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details — not scored
Size23 MB38 MB
Age rating4+4+
DeveloperBeibi Technology Co., Ltd.1PAPER

In-app purchases

2 purchases

ZenFast

Subscriptions1
  • All Access (1 month)7 Days trial$0.991 Month
One-time1
  • All Access (lifetime)$4.99
None

Ai Calories Deficit Tracker

No in-app purchases

Questions

Is ZenFast free?
ZenFast is free to download, with in-app purchases available.
Is Ai Calories Deficit Tracker free?
Ai Calories Deficit Tracker is free to download, with no in-app purchases.
Do ZenFast or Ai Calories Deficit Tracker have ads?
Neither ZenFast nor Ai Calories Deficit Tracker shows ads.

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