AllyFastLite vs Sippi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AllyFastLite
This app offers a clean and private intermittent fasting timer. It supports various fasting schedules and provides insights into fasting stages. All data is stored locally on your device for enhanced privacy.
- Intermittent fasting timer
- Supports multiple fasting plans
- Extended fast tracking
- Editable fasting history
- Fasting stage insights
- Local data import/export
- Dark Mode support
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AllyFast is a beautifully crafted intermittent fasting timer built with SwiftUI. Clean, lightweight, and privacy-first. Whether you follow 16:8, 18:6, 20:4, OMAD, or extended fasts, AllyFast keeps your fasting journey simple and focused. Why AllyFast? • No subscriptions. One-time $0.99. Yours forever. • 100% private. All data stays on your device. • No ads, no trackers, no accounts, no clutter. • Ultra lightweight at just 1.7 MB. Key Features • Beautiful fasting timer with smooth SwiftUI animations • Supports intermittent fasting plans: 12:12, 14:10, 16:8, 18:6, 20:4, OMAD • Extended fasts up to 72 hours • Editable fasting history with color-coded goal tracking • Science-based fasting stage insights (fed state, ketosis, autophagy, and more) • Unlimited local import and export of your fasting data • Polished for iOS 26 Liquid Glass • Full Dark Mode support Perfect Privacy Your fasting data never leaves your iPhone. No cloud sync, no servers, no tracking. Just you and your fast. Built for Everyone From beginners exploring their first 16:8 fast to experienced fasters tracking multi-day autophagy windows, AllyFast adapts to your goals without getting in the way. No cloud. No noise. Just fasting.
Sippi
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Meet Sippi, your coach for a happy skin & gut! Hydrate for radiant skin, smoother digestion, and balanced energy. Sippi helps you drink smarter tracking your hydration, glow, and gut health in one simple habit. Your hydration coach for beauty and balance, powered by smart insights. Hydrate smarter, feel better. Log your drinks in seconds and track your Hydration Score a 7-day view of how well you’re nourishing your body (and yes, your skin and gut too). Insights your body will thank you for. Sippi spots patterns like afternoon dips, bloating from travel dehydration, or dry-skin days and turns them into clear, personalized actions. Think of it as your hydration coach for a calmer body, brighter skin, and lighter days. Made for your rhythm. Whether you’re training, working, pregnant, or simply caring for your body, Sippi adapts your reminders and goals to your lifestyle. No generic advice only what fits you. Why it works: • Glow & Gut Health: see how hydration affects skin and digestion • Hydration Score (0–100): simple, motivating, trackable • Smart Insights: data-driven guidance turned into daily actions • Curated Nudges: gentle reminders that fit your rhythm • Trends & Progress: weekly and monthly charts for lasting habits • Fast Logging: one-tap add for your usual drinks Glow responsibly. Sippi supports healthy hydration habits but isn’t a medical app. For specific conditions, please consult a healthcare professional. Feedback: hello@robotdreams.studio Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: AllyFastLite at none against Sippi's 2. Sippi's advantage is update cadence (every 4 days vs every 5 months). On price, ads, device support and iOS requirement 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. Sippi sells 2 in-app purchases, starting at $1.99 per month. AllyFastLite asks for nothing beyond the download.
AllyFastLite ships an update every 5 months, Sippi every 4 days. The most recent releases landed on November 5, 2026 and October 30, 2026 respectively.
| Parameter | AllyFastLite | Sippi |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (11 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 11 — better | — |
| Update frequency | Every 5 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.2 | 18.2 |
| Further details — not scored | ||
| Size | 3 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Wonseok Lee | Robot Dreams LTD |
In-app purchases
AllyFastLite
No in-app purchases
Sippi
- Premium Monthly7 Days trial$1.991 Month
- Premium Annual7 Days trial$14.991 Year









