Comparison

Blimbi vs FastKept

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

Head to head
About

Blimbi

Features
Read full description

Blimbi is the intermittent fasting tracker that stays clear, private and pressure-free. No ads and no rigid rules. You choose when to start and stop. Pick 12:12, 14:10, 16:8, 18:6, 20:4 or another rhythm. Your reference time guides you but never starts or ends a fast automatically. Eating mode clearly separates your current eating window from the next fasting goal. THE ESSENTIALS, DONE WELL • Live timer with goal, time remaining and clear backdated edits. • Editable journal, weekly overview, calm milestones and CSV export. • Educational metabolic stages shown as approximate ranges, never measurements. • Illustrated quick reads about drinks, returning to food, evidence and safety. • Widgets, Live Activities, Shortcuts, Apple Watch and configurable reminders. • End-to-end encrypted backup with your Apple or Google account. • No ads. BLIMBI PLUS Build a custom weekly rhythm, add a clinician's comment, and prepare an assisted draft that you always review before saving. Plus also expands insights and personalization. Price and terms are shown before purchase. Blimbi is not a medical device. It does not diagnose, treat, cure, prevent or measure any condition or metabolic process, and it is not a substitute for professional care. If you have diabetes, take medication, are pregnant or breastfeeding, consult your healthcare team first. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

FastKept

Features
Read full description

Track your fasts with a clear timer and a plan that fits your week. What makes FastKept different? • Every feature is completely free. No paywalls and no locked features. • Home Screen widgets show the live clock under "Fasting". The medium widget also shows the goal end time, with wording such as "Your goal is 16 hours, so you're done at 12:58 PM." Lock Screen widgets show your running time and goal progress. • Choose a weekday schedule with rest days, keep notes and mood with each fast, and export and restore your history through Files without an account. Everything is free. The only thing you can ever pay for is removing ads for other Solstice Suite apps. Choose a preset or a custom length, start and end a fast, and review week, month, and rolling range history. Keep optional water, weight, and mood logs. Set reminders and use a Live Activity while a fast is running. Privacy Fasts and logs stay on your iPhone unless you export them, enable the relevant Apple Health sharing, or choose an account backup. Local photos and records from Apple Health are excluded from online backups. This is a timer and journal, not medical advice; it does not measure ketosis or diagnose fasting stages. Optional supporter plans are billed by Apple through your App Store account, and the app checks subscription status with our purchase provider using purchase information and technical information. We do not send your personal app records to it. Crash and performance diagnostics help us fix problems; they exclude your identity, screenshots, and view attachments. Optional ad removal Removes ads in all our apps on this device. Choose $0.99 weekly, $2.99 monthly, or $19.99 yearly in the U.S.; local prices may vary. All features remain free. Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel in your Apple Account subscription settings. Deleting the app does not cancel a subscription. Support: support@solsticesuiteapps.com Privacy: https://fastkept.com/privacy/ Terms: https://fastkept.com/terms/ Part of Solstice Suite. All features free. No account needed.

Screenshots

Blimbi4 screens
FastKept4 screens

Verdict

The call

The clearest difference is update cadence: Blimbi at every 3 days against FastKept's fortnightly. Blimbi also leads on device support (3 vs 1). On price, ads, in-app purchases 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. Blimbi sells 2 in-app purchases, starting at $3.99 per month and FastKept sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Blimbi ships an update every 3 days, FastKept fortnightly. The most recent releases landed on October 18, 2026 and October 20, 2026 respectively.

Scorecard2 real differences Ā· 4 level
Blimbi versus FastKept: the parameters behind the verdict, then further details
ParameterBlimbiFastKept
PriceFreeFree
Update frequencyEvery 3 days — betterFortnightly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size92 MB17 MB
Age rating4+4+
DeveloperHURTADO GLOBAL MEDIA GROUP S DE RL DE CVTimothy Hess

In-app purchases

2 purchases

Blimbi

Subscriptions2
  • Blimbi Plus monthly$3.991 Month
  • Blimbi Plus yearly7 Days trial$24.991 Year
3 purchases

FastKept

Subscriptions3
  • Ad-free Supporter Weekly$0.997 Days
  • Ad-free Supporter Monthly$2.991 Month
  • Ad-free Supporter Yearly$19.991 Year

Questions

Is Blimbi free?
Blimbi is free to download, with in-app purchases available.
Is FastKept free?
FastKept is free to download, with in-app purchases available.
Do Blimbi or FastKept have ads?
Neither Blimbi nor FastKept shows ads.
Which is updated more often, Blimbi or FastKept?
Blimbi ships an update every 3 days, and FastKept fortnightly. Most recently, Blimbi was updated on October 18, 2026 and FastKept on October 20, 2026.

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