Comparison

PerfectFast vs SproutTrace

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

Head to head
About

PerfectFast

This app helps you track intermittent and extended fasting periods with a clean, focused interface. It supports various fasting schedules, custom durations, and provides detailed history and statistics to monitor your progress.

Highlights
  • Intermittent and extended fast tracking
  • Custom fasting schedules
  • Fasting history and statistics
  • Reminders and notifications
  • Apple Watch companion app
  • Live Activity support
Features
Read full description

PerfectFast helps you track intermittent and extended fasts with a calm, focused experience. Set up a fasting plan, follow your active fast, review your history, and see progress statistics without clutter. The app supports common fasting schedules, custom durations, reminders, fasting stages, history views, statistics, appearance settings, local data export, and Live Activity support on compatible devices. Log water, weight, blood glucose, and ketones beside your fasts, and read them on the fast's own clock in the Fast Timeline, with resting heart rate, heart rate variability, body composition, and sleep from Apple Health if you connect it. The Apple Watch companion lets you check your current or scheduled fast from your wrist, start or end a fast when your iPhone is nearby, and keep progress on your watch face with complications. Your fasting data stays on your device unless you choose to export or share it.

About

SproutTrace

Easily track your child's height and weight with private, organized records. Visualize growth trends, compare with reference ranges, and manage multiple children's profiles. Export data and set reminders for comprehensive child development monitoring.

Highlights
  • Record height, weight, and notes
  • View height and weight trend charts
  • Compare growth with reference ranges
  • Manage multiple child profiles
  • Export records as CSV
  • Set local reminders
  • Optional iCloud sync
Features
Read full description

Keep a clear, private record of your child’s growth. SproutTrace makes it quick to record height and weight, see changes over time, and keep each child’s history organized. KEY FEATURES • Record height, weight, date, and an optional note • View separate height and weight trend charts • Compare growth with age- and sex-appropriate reference ranges • Manage profiles for more than one child • Review, edit, and delete past records • Choose metric or imperial units • Set local reminders and export records as CSV • Optionally sync through your private iCloud database PRIVACY FIRST Your family’s records are stored on your device and, when you enable iCloud sync, in your private Apple CloudKit database. SproutTrace does not use advertising trackers or send children’s records to a developer-operated server. SproutTrace is a family record-keeping tool. It does not provide medical diagnosis, treatment, nutrition, or health advice. Growth charts and reference data are for general information only and do not replace advice from a qualified medical professional. Terms of Use: http://liangyitech.com/sprouttrace/terms-of-use/en/

Screenshots

PerfectFast4 screens
SproutTrace4 screens

Verdict

The call

The clearest difference is in-app purchases: PerfectFast at none against SproutTrace's 3. PerfectFast also leads on iOS requirement (17.6 vs 26.0). On price, review sentiment, update cadence and ads 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. SproutTrace sells 3 in-app purchases, starting at $0.99 per month. PerfectFast asks for nothing beyond the download.

UpkeepUpdate frequency

PerfectFast ships an update every 9 days, SproutTrace every 10 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
PerfectFast versus SproutTrace: the parameters behind the verdict, then further details
ParameterPerfectFastSproutTrace
PriceFreeFree
Rating5.0 (9 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings9 — better—
Update frequencyEvery 9 days — betterEvery 10 days
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS17.6 — better26.0
Further details — not scored
Size32 MB9 MB
Age rating12+4+
DeveloperIdan Lupinsky广州两仪软件有限公司

Customer experience

PerfectFast

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

SproutTrace

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

PerfectFast

No in-app purchases

3 purchases

SproutTrace

Subscriptions2
  • SproutTrace Pro Monthly$0.991 Month
  • SproutTrace Pro Yearly$0.991 Year
One-time1
  • SproutTrace Lifetime$1.99

Questions

Is PerfectFast free?
PerfectFast is free to download, with no in-app purchases.
Is SproutTrace free?
SproutTrace is free to download, with in-app purchases available.
Do PerfectFast or SproutTrace have ads?
Neither PerfectFast nor SproutTrace shows ads.
Which is updated more often, PerfectFast or SproutTrace?
PerfectFast ships an update every 9 days, and SproutTrace every 10 days. Most recently, PerfectFast was updated on October 28, 2026 and SproutTrace on October 31, 2026.

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