Pengu vs FastLeaf
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pengu
Track your intermittent fasting and meals with a gentle approach. Features include fasting timers, one-photo meal logging with auto-detection, and calorie counting. Monitor your progress with a visual mascot and calendar view.
- Intermittent fasting timers (16:8, 18:6)
- One-photo meal logging
- Calorie and nutrition tracking
- Penguin progress mascot
- Auto-detected food menus
- Calendar view of past data
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Pengu: a gentle fasting, diet, and meal tracker. Intermittent fasting timers (16:8, 18:6), one-photo meal logging, and calorie tracking — all in one app. [Key features] • Pick a plan like 16:8 or 18:6 and start the timer with one tap • A penguin mascot shifts with your fasting progress, so you can see how it's going at a glance • Snap a food photo and Pengu auto-detects the menu and nutrition • When the result looks off, edit it by hand right away • Daily totals for calories, protein, carbs, and fat • Calendar view of your past fasts and meals • Available in English, Korean, Japanese, and Chinese [Pengu Pro] Unlimited photo analysis, full history, every fasting plan, and extra insights. Cancel anytime from your subscription settings. Take it lightly, keep it going — with Pengu. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://shore-clutch-a8c.notion.site/Privacy-Policy-36cb98f789b8807fa028f82bdb713cb5
FastLeaf
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FastLeaf makes intermittent fasting simple and easy to stick with. ■ Live Fasting Timer See exactly how long you've been fasting and how far you are from your goal. It stays accurate even if you close the app or restart your phone — elapsed time is based on your real start time. ■ Your Body, Stage by Stage Digestion → blood sugar → fat burning → ketosis → autophagy. See what stage your body is in right now and how long until the next one. ■ 6 Proven Protocols From 12:12 to 16:8, 18:6, 20:4 and OMAD (23:1). Pick the plan that fits you, beginner to advanced. ■ History & Streaks Log every fast and build your streak. A 15-week heatmap and session history make consistency visible. ■ Insights Average and longest fasts, goal completion rate and weekly trends — all in clear stats. ■ Reminders Get notified when you reach your goal and when your eating window ends. FastLeaf Pro (one-time lifetime purchase) · All protocols · Unlimited history · Full body-state timeline · Advanced stats · Home widget · No ads No subscription. Pay once, yours forever. Note: This app is for general wellness information and is not medical advice. Consult a professional if you are pregnant or have a condition such as diabetes.
Screenshots
Verdict
The clearest difference is ads: Pengu at none against FastLeaf's shown. On price, update cadence, in-app purchases 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
Both are free to download. Pengu sells 3 in-app purchases, starting at $4.99 per 7 days and FastLeaf sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Pengu ships an update every 9 days, FastLeaf every 2 weeks. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.
| Parameter | Pengu | FastLeaf |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 days — better | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 58 MB | 96 MB |
| Age rating | 4+ | 4+ |
| Developer | junhee cho | SEONYONG LEE |
In-app purchases
Pengu
- Pengu Pro Weekly$4.997 Days
- Pengu Pro Monthly$5.991 Month
- Pengu Pro Yearly3 Days trial$39.991 Year
FastLeaf
- FastLeaf Pro$2.99








