# PerfectFast vs SproutTrace

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.

Both are free to download. SproutTrace sells 3 in-app purchases, starting at $0.99 per month. PerfectFast asks for nothing beyond the download.

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.

## The numbers

| Metric | PerfectFast | SproutTrace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/perfectfast-fasting-timer/id6759067877/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 10 days |
| Monetization | **Free** | Free with in-app purchases |
| Size | 32 MB | 9 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Idan Lupinsky](https://appshunter.io/developer/1876630037) | [广州两仪软件有限公司](https://appshunter.io/developer/1682727762) |

## What reviewers say

### PerfectFast

[App page](https://appshunter.io/ios/app/perfectfast-fasting-timer/id6759067877)

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:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### SproutTrace

[App page](https://appshunter.io/ios/app/sprouttrace/id6792499517)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SproutTrace Pro Monthly | $0.99 | per month |
| SproutTrace Pro Yearly | $0.99 | per year |
| SproutTrace Lifetime | $1.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*