Comparison

SOL vs Intermittent Timer

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

Head to head
About

SOL

Read full description

SOL (솔) — 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's actually happening inside your body — in real time. As you fast, SOL guides you through each biological phase: Fed State → Insulin Dropping → Fat Burning → Ketosis → Autophagy → Deep Autophagy → Growth Hormone Surge → Immune Reset FEATURES • Beautiful minimal timer with progress ring • Real-time body phase updates with scientific sources • Full body timeline — see all 8 phases and your progress • Tap any phase for in-depth science and PubMed sources • Smart notifications at each milestone • Stats dashboard — track your fasting journey • Background timer — keeps running when you close the app • Light & dark mode with handcrafted watercolor textures • Home screen widget • Community pulse — you're not fasting alone • Share your results with a beautiful card FASTING GOALS Choose from 16h, 18h, 20h, 24h, 36h, 48h, 72h, or go Open with no time limit. Hit your goal? Extend to the next level. DESIGNED WITH INTENTION SOL is inspired by the simplicity of nature. No clutter, no ads, no unnecessary features. Just you, your fast, and the knowledge of what your body is doing. All body phase information is based on peer-reviewed scientific research with direct links to PubMed sources. Begin your fast. Know your body. Grow like the pine.

About

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.

Highlights
  • Flexible fasting timer
  • Smart notifications
  • Visual progress timeline
  • Home screen widgets
  • Progress & trends tracking
  • Fasting history
  • iCloud sync
Read full description

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

SOL4 screens
Intermittent Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: SOL at none against Intermittent Timer's 1. On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Intermittent Timer sells 1 in-app purchase, starting at $0.99 per month. SOL asks for nothing beyond the download.

UpkeepUpdate frequency

SOL ships an update fortnightly, Intermittent Timer every 3 weeks. The most recent releases landed on September 22, 2026 and July 31, 2026 respectively.

Scorecard1 real difference · 8 level
SOL versus Intermittent Timer: the parameters behind the verdict, then further details
ParameterSOLIntermittent Timer
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS1615.1 — better
Further details — not scored
Size6 MB49 MB
Age rating4+17+
DeveloperDanny LinsnerMichael Bright

In-app purchases

None

SOL

No in-app purchases

1 purchases

Intermittent Timer

Subscriptions1
  • Intermittent Timer Premium$0.991 Month

Questions

Is SOL free?
SOL is free to download, with no in-app purchases.
Is Intermittent Timer free?
Intermittent Timer is free to download, with in-app purchases available.
Do SOL or Intermittent Timer have ads?
Neither SOL nor Intermittent Timer shows ads.
Which is updated more often, SOL or Intermittent Timer?
SOL ships an update fortnightly, and Intermittent Timer every 3 weeks. Most recently, SOL was updated on September 22, 2026 and Intermittent Timer on July 31, 2026.

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