Comparison

ReAct vs Fast

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

Head to head
About

ReAct

This app helps you lose weight by building willpower through a two-step planning process. Create custom plans to replace overeating with healthy actions, track your progress, and learn the science behind the method.

Highlights
  • Create 2-step willpower plans
  • Track plan completion
  • Edit and customize plans
  • Choose suggested or custom actions
  • Learn weight loss science
  • Share plans via screenshot
  • Rearrange plans in a grid
Features
Read full description

Lose weight by strengthening willpower to avoid overeating in just 2 steps. Features - Create 2-step plans to redirect your habitual action of overeating with new, healthy alternative actions. - Track the number of times you have performed your new plan. - Choose not to complete your plan, which will not add to your completion number. - View all your plans in a grid list each integrated with your successful completions. - Edit your plans for greater success by choosing actions that work better for you. - Choose from suggested scenarios and actions, or write your own. - Get help understanding the basics of the science behind this weight loss concept. - Share your plans with a full resolution screenshot. - Tap and hold on a plan, then drag to rearrange its position in the grid.

About

Fast

Features
Read full description

Fast for your body — and your soul. Most fasting apps are just timers. Fast is different. It unites the physical and the spiritual: lose weight and build healthy habits, while drawing closer to God through the ancient practice of fasting. FASTING WITH PURPOSE Set a prayer or intention over each fast and keep it in front of you while you fast. Your hunger becomes a reminder to pray — not just a number on a clock. THE 40-DAY JOURNEY A guided 40-day walk of scripture, reflection, and fasting — following the road Jesus walked in the wilderness. Begin any time, and especially during Lent (Fast knows when Lent is). Each day brings a passage, a short reflection, and a prompt to carry into your fast. SCRIPTURE, PRAYER & REFLECTION • A daily Bible verse on fasting, woven right into your day • A simple prayer and intention tracker • Reflect after each fast — how it felt, what you’re grateful for, what you prayed FOR YOUR BODY, TOO • A clean fasting timer with multiple protocols (12:12, 16:8, 18:6, 20:4, OMAD), each shown as a 24-hour ring of fasting vs. eating time • Understand every stage of a fast — from fat-burning and ketosis to autophagy — explained in plain language (timings are general estimates, never medical fact) • Weight tracking, streaks, milestones, and goals — including multi-week challenges • Science-backed lessons on fasting and healthy habits SAFE AND SUPPORTIVE Your health comes first. Fast includes a gentle safety check, never glorifies extreme fasting, and shows clear medical disclaimers. Fasting isn’t for everyone — please consult a healthcare professional. FOR EVERYONE Fast is built for Christians who want to fast with intention — and it respectfully supports other faith traditions and a secular reflection mode, too. Choose your path in onboarding; change it any time. PRIVATE BY DESIGN No account required. Your fasts, reflections, prayers, and weight stay on your device. We don’t have servers that collect your data. Fast is for general wellness and education and is not medical advice.

Screenshots

ReAct4 screens
Fast4 screens

Verdict

The call

The clearest difference is in-app purchases: Fast at none against ReAct's 1. ReAct's advantage is iOS requirement (10.0 vs 14.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ReAct sells 1 one-off in-app purchase. Fast asks for nothing beyond the download.

Scorecard2 real differences · 8 level
ReAct versus Fast: the parameters behind the verdict, then further details
ParameterReActFast
PriceFreeFree
Rating2.0 (5 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings5 — better—
Update frequency—Every 6 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS10.0 — better14.0
Further details — not scored
Size17 MB22 MB
Age rating4+4+
DeveloperZaminiti Pty LtdVirtu Apps

In-app purchases

1 purchases

ReAct

One-time1
  • ReAct Pro$5.99
None

Fast

No in-app purchases

Questions

Is ReAct free?
ReAct is free to download, with in-app purchases available.
Is Fast free?
Fast is free to download, with no in-app purchases.
Do ReAct or Fast have ads?
Neither ReAct nor Fast shows ads.

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