Comparison

Hakaru vs Fasting Tracker

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

Head to head
About

Hakaru

Features
Read full description

Hakaru is an app for logging your weight. That's it. No meal tracking. No calorie counting. No workout logs. You type in the number from this morning's scale, and you're done. It takes about three seconds. β–  Your numbers, drawn as they are The chart connects the values you actually logged, so today's number and the right end of the line always agree. Behind it sits a faint line: the 7-day average. Your weight swings by a kilo or more from water and food alone, and this second line tells you whether a bump is just noise or an actual change of direction. Drag your finger across the chart to see what you logged on any day, and its smoothed value. β–  Set a goal, get an estimate Enter a goal weight and Hakaru shows roughly how many days it would take at your current pace. Once you get there, it shows a range to stay within. β–  Missed days are fine There's no streak to break, no red warning, no guilt. You can go back and fill in a day from the calendar, or you can leave it blank. Come back after a week away and the chart just carries on. β–  What it does - Log weight (drag a ruler or type it in) - Log body fat percentage (hide it if you don't need it) - A chart of what you logged, with the 7-day average behind it - Goal weight with an estimated arrival - BMI - Calendar and list views of your history - Weekly and monthly summaries - A daily reminder at a time you choose - Hide the numbers when someone's looking - Share a progress card as an image - iCloud backup, so your entries follow you across devices - Export to CSV - Write to the Health app - English and Japanese - Light and dark themes β–  Privacy Your entries are stored on your iPhone. Nothing is sent to the developer's servers. There's no account and no login. Turn on iCloud backup and your entries are stored in your own iCloud. Health integration writes only; Hakaru never reads your Health data. β–  A note Hakaru is a tool for keeping records. It isn't a substitute for diagnosis or treatment. If something about your health concerns you, please talk to a doctor. Hakaru is free. We'd love to hear from you by email.

About

Fasting Tracker

Features
Read full description

Sablo is a fasting timer that stays out of your way. Start a fast, see exactly where you are, and get a nudge when you reach your goal. Begin with a 7-day free trial, then continue monthly or buy lifetime access once. Every feature is included either way. EVERYTHING IN SABLO β€’ 16:8, 18:6, 20:4, OMAD and custom windows β€’ Set the start time after the fact, so a fast you forgot to tap still counts β€’ Edit or delete any past fast β€’ Streaks and your current metabolic phase β€’ A reminder when you reach your goal, and one before your eating window closes β€’ Unlimited history β€’ Trends, averages and completion rate β€’ Home Screen and Lock Screen widgets, Live Activity and Dynamic Island β€’ Weight logging, with optional Apple Health sync β€’ Export your data as CSV whenever you want β€’ Five accent themes IT ALL STAYS ON YOUR PHONE No account. No email. No sign-up. Your fasts never leave the device. That also means nothing to sync, and nothing to lose when you are offline. TWO WAYS TO PAY Start with a 7-day free trial and continue monthly, or pay once for lifetime access. The lifetime option costs less than three months of the subscription and never renews. Sablo describes the phases your body moves through while fasting. It is a timer and a log, not medical advice β€” talk to a doctor before changing how you eat. SUBSCRIPTION TERMS Sablo Premium is billed monthly, at the price shown in the app, after a 7-day free trial. Payment is charged to your Apple Account when you confirm the purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period, and your account is charged for renewal within the 24 hours before the current period ends. You can manage or cancel it in Settings β€Ί Apple Account β€Ί Subscriptions. Any unused part of a free trial is forfeited if you buy the lifetime unlock. The lifetime unlock is a single purchase. It does not renew. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Hakaru4 screens
Fasting Tracker4 screens

Verdict

The call

The clearest difference is in-app purchases: Hakaru at none against Fasting Tracker's 2. Hakaru also leads on update cadence (every 6 days vs every 2 weeks). Fasting Tracker's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

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

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

Both are free to download. Fasting Tracker sells 2 in-app purchases, starting at $7.99 per month. Hakaru asks for nothing beyond the download.

UpkeepUpdate frequency

Hakaru ships an update every 6 days, Fasting Tracker every 2 weeks. Both last shipped on October 29, 2026.

Scorecard3 real differences Β· 3 level
Hakaru versus Fasting Tracker: the parameters behind the verdict, then further details
ParameterHakaruFasting Tracker
PriceFreeFree
Update frequencyEvery 6 days β€” betterEvery 2 weeks
AdsYesNo β€” better
In-app purchasesNo β€” betterYes
DevicesiPhoneiPhone
Requires iOS17.017.0
Further details β€” not scored
Size6 MB9 MB
Age rating4+12+
DeveloperJun TsudaSnir Tam

In-app purchases

None

Hakaru

No in-app purchases

2 purchases

Fasting Tracker

Subscriptions1
  • Monthly7 Days trial$7.991 Month
One-time1
  • Sablo Lifetime$19.99

Questions

Is Hakaru free?
Hakaru is free to download, with no in-app purchases.
Is Fasting Tracker free?
Fasting Tracker is free to download, with in-app purchases available.
Do Hakaru or Fasting Tracker have ads?
Hakaru shows ads; Fasting Tracker does not.
Which is updated more often, Hakaru or Fasting Tracker?
Hakaru ships an update every 6 days, and Fasting Tracker every 2 weeks. Most recently, Hakaru was updated on October 29, 2026 and Fasting Tracker on October 29, 2026.

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