Comparison

Alert vs Fastin

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

Head to head
About

Alert

This app allows wireless configuration of specific devices via Bluetooth. It offers intuitive setup and a range of programmable features for connected products. Ensure you save your settings to retain changes.

Highlights
  • Wireless Bluetooth configuration
  • Intuitive setup menus
  • Programmable features
  • Device scanning and connection
  • Save configuration settings
Features
Read full description

Alert-iT - app used to configure Alert-iT devices. The Alert-iT app equips your Bluetooth® enabled iOS device for wireless setup of Alert-iTs latest devices. The app provides simple intuitive config set-up and a widened array of programmable features. Parameter configuration is performed via a wireless Bluetooth connection using Alert-iTs app loaded onto a Bluetooth compatible iOS device. Once installed onto a mobile device, the app must be connected with one of our Bluetooth compatible products through Bluetooth in order to display configuration menus. Without connectivity, you will not see any of the menus. Best connection is obtained when the iOS device is within 9 meters of the device. Activate the Scan function from the Alert-iT app when in proximity of the target device, the smartphone or tablet will search for Bluetooth devices and list them by name. The default name for each device will be its P number appended with the factory serial number. Please note: some devices will require a button to be pressed before they can be connected to, please see the devices handbook for specific instructions. Make all configuration selections as desired from the various app menus. Once complete, save settings and exit app. All changes will be lost if the “Save” activity is not completed at the end of the process.

About

Fastin

This app guides you through intermittent fasting for weight loss and improved health. It offers personalized plans, tracking tools for food, weight, water, sleep, and activity, along with educational courses on fasting and nutrition. Visualize your progress with detailed statistics to stay motivated on your journey.

Highlights
  • Personalized fasting plans
  • Food, weight, water, sleep, and activity tracking
  • Fasting and nutrition courses
  • Progress statistics and charts
  • Step-by-step fasting guidance
  • Meal journal for mindful eating
Features
Read full description

Do you know how to lose weight and keep it for a lifetime? We have no way to exercise for 3 hours a day, weigh food, and count calories anytime. But we can control when to eat to Lose Weight which is FASTING. All you need to do is shift eating time to lose weight. The most popular and healthy way to lose weight from our wise ancients. Let’s guide you on how to start your fasting journey. Fastin: Intermittent Fasting is a simple fasting app, a powerful weight-loss tool. Lose weight, improve your health and simplify your lifestyle. Intermittent fasting has a powerful effect on your body and brain and may help you live a longer, healthier life. Intermittent fasting(IF) doesn’t specify which foods you should eat, but rather when you should eat them. Learn the science behind intermittent fasting(IF) so you can use it to achieve your goals. LIVE LONGER & LOOK BETTER HOW WE HELP YOU MASTER INTERMITTENT FASTING Fasting guidance A step-by-step guide to intermittent fasting Smart and flexible tracking tools that adapt to your needs Body status shows you what’s happening to your body when fasting Personalized fasting plans based on your body condition (6 plans available) Fasting Tools Food Tracker: log every meal and snack, view food values and trends and gain insights into our nutrition course Weight Tracker: record weight changes to reach your ideal weight Water Tracker: track consumption and stay hydrated Sleep tracker: aim to sleep to lose more weight Activity Tracker: track daily activity and motivate yourself to move a little more Reminders: hit every mini-goal to reach your dream target Fasting & Nutrition Courses Knowledge library for intermittent fasting and nutrition Professional content on nutrition, learn to choose the right foods Easy-to-use meal journal for mindful eating Boost your immune system, become stronger than ever Fasting Statistics(For insights & motivation) Visualize your fasting process and track changes in charts Reveal the patterns of your fasting process and body performance Find physiological harmony - Intermittent fasting connects body, mind & soul with your weight Get inspiring and self-reflective statistics - stay motivated. DISCLAIMER Intermittent fasting is a change in eating habits. It is not suitable for pregnant/nursing women, children under 18 years of age, or people with diagnosed eating disorders. Consult your doctor or health care professional. *Individual results may vary, and testimonials are not claimed to represent typical results. HEALTH APP INTEGRATION: Fastin: Intermittent Fasting - Simple Fasting App integrates with Apple Health App so you can sync your data (requires iOS 9 and above). Fastin: Intermittent Fasting also supports Face ID for security. SUBSCRIPTION POLICY Get full access to all the features and your personalized fasting plan including a nutrition guide in the Fastin: Intermittent Fasting app with an in-app purchase. Plans: $6.99 Weekly, $19.99 Quarterly Payment: Payment will be charged to your Apple account on confirmation of purchase Cancellation: Manage at your Apple Account Settings Renewal: Account will be charged for renewal 24-hours before the end of the current period TERMS & POLICY Privacy: https://s.bongmi.cn/miscs/fasting-app/en/privacy.html Service: https://s.bongmi.cn/miscs/fasting-app/en/service.html Download Fastin: Intermittent Fasting - Simple Fasting App to help you reach your goals faster and more effectively! Establish a basic eating discipline, keep yourself in good shape during self-isolation and use our educational and motivational content to stay mindful of your eating habits. Our mission is not only to offer you an Intermittent Fasting App, but also to improve your health, increase weight loss, and improve cognitive ability. Download Intermittent Fasting Tracker now. Start your new journey today!

Screenshots

Alert1 screens
Fastin4 screens

Verdict

The call

The clearest difference is in-app purchases: Alert at none against Fastin's 12. Alert also leads on iOS requirement (12.5 vs 16.6). Fastin's advantage is review sentiment (33% vs 0%) and update cadence (every 3 weeks vs every 6 months). 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. Fastin sells 10 in-app purchases, starting at $4.49 per 7 days. Alert asks for nothing beyond the download.

UpkeepUpdate frequency

Alert ships an update every 6 months, Fastin every 3 weeks. The most recent releases landed on October 7, 2026 and November 1, 2026 respectively.

Scorecard5 real differences · 5 level
Alert versus Fastin: the parameters behind the verdict, then further details
ParameterAlertFastin
PriceFreeFree
Rating—4.8 (10K ratings) — better
Positive reviews0.0% of reviews33.3% of reviews — better
Number of ratings—10K — better
Update frequencyEvery 6 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS12.5 — better16.6
Further details — not scored
Size12 MB243 MB
Age rating4+17+
DeveloperiTs Designs LimitedBongmi Global Group

Customer experience

Alert

Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Fastin

All ratings10,157 ratings
Positive96.3%
Neutral1.2%
Negative2.5%
Written reviews294 reviews
Positive33.3%
Neutral5.8%
Negative60.9%

Bugs and requests

Alert

Not enough reviews yet to summarise bugs or requests.

Fastin

Reported bugs

4 issues
  • Fasting timer resets unexpectedly
  • App crashes or freezes
  • Sync and login issues
  • Inability to edit past fasts

Requested features

6 requests
  • Ability to scan barcodes for nutrition info
  • More recipes and meal planning options
  • Integration with fitness trackers
  • Customizable fasting schedules
  • Better data tracking and analysis
Show 1 more
  • Improved customer support

In-app purchases

None

Alert

No in-app purchases

10 purchases

Fastin

Subscriptions10
  • FastingPrime1Weekly3 Days trial$4.497 Days
  • PrimeWeekly$6.997 Days
  • Fasting Prime3 Days trial$6.997 Days
Show 7 more
  • PrimeMonthly2 variants$9.991 Month
  • PrimeWeekly$9.997 Days
  • Fasting Prime3 Days trial$9.991 Month
  • PrimeQuarterly2 variants$19.993 Months
  • Fasting Prime7 Days trial$29.991 Year
  • PrimeQuarterly$29.993 Months
  • PrimeYearly$49.991 Year

Questions

Is Alert free?
Alert is free to download, with no in-app purchases.
Is Fastin free?
Fastin is free to download, with in-app purchases available.
Do Alert or Fastin have ads?
Neither Alert nor Fastin shows ads.
Which is updated more often, Alert or Fastin?
Alert ships an update every 6 months, and Fastin every 3 weeks. Most recently, Alert was updated on October 7, 2026 and Fastin on November 1, 2026.

Other comparisons