SOL vs Intermittent Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SOL
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SOL (솔) is Korean for pine tree. Like the pine that endures through every season, SOL stands with you through every fast. WHAT MAKES SOL DIFFERENT Most fasting apps just show a timer. SOL shows you what is happening inside your body as the hours pass, with the research behind it. As you fast, SOL guides you through eight phases: Fed State, Insulin Dropping, Fat Burning, Ketosis, Autophagy, Deep Autophagy, Growth Hormone Surge and Immune Reset. FEATURES • A calm timer with a progress ring and phase markers • Your fast on the lock screen and in the Dynamic Island • All 8 phases explained, with links to the published studies • A goal dial from 12 to 72 hours, or an open fast with no limit • Started earlier? Set the time you last ate, and correct it later • Switch the timer between time elapsed and time to go • A daily reminder to start your fast • Your Journey: stats, streaks, a 7 day view and your history • Edit, add or delete past fasts • Guidance on breaking your fast gently • Home screen widget • "Start my fast" with Siri • Share your results with a beautiful card • Light and dark mode with handcrafted watercolor textures FASTING TOGETHER If you like, join the live count of people fasting right now. It is optional, anonymous and off until you turn it on. YOUR DATA No account, no ads, no tracking. Your fasting data stays on your device unless you choose to join the community count or turn on iCloud backup. DESIGNED WITH INTENTION SOL is inspired by the simplicity of nature. No clutter and no paywall. Just you, your fast, and a clearer picture of what your body is doing. SOL is free. If you enjoy it, you can leave a tip. ABOUT THE SCIENCE Phase information is based on peer-reviewed research, with direct links to the sources. Some findings come from animal studies, and every body responds differently. SOL offers general wellness information and is not medical advice. Please talk to a doctor before fasting, especially for longer fasts. Begin your fast. Know your body. Grow like the pine.
Intermittent Timer
This app helps you build healthy habits with a simple and flexible fasting timer. Track your progress, receive smart notifications, and visualize your fasting and eating windows with elegant design and home screen widgets. It focuses on consistency without unnecessary complexity.
- Flexible fasting timer
- Smart notifications
- Visual progress timeline
- Home screen widgets
- Progress & trends tracking
- Fasting history
- iCloud sync
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Fast with clarity. Intermittent Timer is a beautiful, flexible fasting timer designed to help you build consistent habits without unnecessary complexity. Whether you follow a 16:8 schedule, OMAD, or a custom routine, the timer adapts to your day. FEATURES • Flexible Fasting Timer Adjust your fasting duration, eating window, or start time whenever life changes. • Smart Reminders Receive helpful notifications when your current fasting or eating window ends. • Visual Progress See your fasting and eating windows on a clear circular timeline. • Home and Lock Screen Widgets Keep your active timer visible without opening the app. • Progress and Trends Track consistency, average fasting duration, completed goals, and long-term progress. • Fasting History Review completed fasts in a simple calendar and timeline. • Automatic iCloud Backup Keep a private backup of your fasting data and restore it on your Apple devices. OPTIONAL SUPPORTER SUBSCRIPTION If Intermittent Timer is useful to you, an optional monthly subscription adds supporter status and helps fund ongoing maintenance and future improvements. It does not unlock app functionality. PRIVACY FIRST No account required. No ads. No tracking. Your fasting data remains yours. Intermittent Timer focuses on what matters: a calm, attractive, distraction-free way to maintain your fasting routine. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://doc-hosting.flycricket.io/intermittent-timer-privacy-policy/9e90d8b9-e8e6-447f-9448-7fff18111f09/privacy
Screenshots
Verdict
SOL and Intermittent Timer are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. SOL sells 3 one-off in-app purchases and Intermittent Timer sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
SOL ships an update fortnightly, Intermittent Timer every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | SOL | Intermittent Timer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 16 | 15.1 — better |
| Further details — not scored | ||
| Size | 7 MB | 49 MB |
| Age rating | 4+ | 17+ |
| Developer | Danny Linsner | Michael Bright |
In-app purchases
SOL
- Seedling Tip$1.99
- Sapling Tip$3.99
- Pine Tip$8.99
Intermittent Timer
- Intermittent Timer Premium$0.991 Month









