Comparison

SOL vs SheFast

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

Head to head
About

SOL

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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

SheFast

This app offers cycle-synced fasting plans that adapt to your body's natural phases. It provides personalized fasting windows, gentle reminders, and progress tracking to support your wellness journey without demanding perfection.

Highlights
  • Cycle-aware fasting plans
  • Personalized fasting windows
  • Rest days to protect streaks
  • Guided daily wellness course
  • Fasting history and progress insights
  • Water and protein tracking
  • Gentle reminders
Features
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SheFast Premium is an auto-renewing paid subscription required for full access to SheFast’s features, including cycle-aware fasting plans, fast tracking and history, reminders, guided course content, and progress insights. Most fasting apps treat every day the same. Your body does not. SheFast is fasting designed around your cycle. It keeps track of your current phase, menstrual, follicular, ovulatory, or luteal, and suggests fasting windows that fit it, so you can stay consistent without fighting your own energy, hunger, or sleep. No pushing through. No starting over every Monday. Just a rhythm that bends when your body needs it to. FASTING THAT FOLLOWS YOUR CYCLE See your phase at a glance and get windows suggested for it. Gentler options when your body asks for ease, more room to stretch when your energy is up. A TIMER THAT KEEPS IT SIMPLE Start, adjust, or end a fast in seconds. Clear progress, calm design, no clutter. REST DAYS THAT PROTECT YOUR MOMENTUM Life happens. Period days happen. Plan rest days ahead and keep your streak intact, because taking care of yourself should never feel like falling behind. A GUIDED DAILY JOURNEY A short, friendly course that builds day by day. Learn how fasting and your cycle interact, at a pace that starts where you are. YOUR HISTORY, BEAUTIFULLY KEPT A calendar of every fast, rest day, and phase, so you can look back and watch your rhythm take shape. SMALL WINS, COUNTED Streaks and achievements that reward consistency, not perfection. WATER AND PROTEIN, ONE TAP AWAY Quick adds for water and protein, plus manual entries when you want more control. Weight tracking is there if you choose it, never in your face. REMINDERS THAT RESPECT YOU Gentle notifications for fast starts, fast ends, and hydration. You choose what you hear and when. PRIVATE AND SIMPLE Sign in with Apple or email. Your data syncs to your account and stays yours. MEMBERSHIP SheFast is a subscription with weekly, monthly, and yearly plans. Prices are shown in the app. Payment is charged to your Apple ID account at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. A NOTE FROM US SheFast is made by a small independent team. We built the app we wished existed: warm, unhurried, and shaped around real bodies and real weeks. A GENTLE NOTE ON HEALTH SheFast is for general wellness and is not medical advice. It does not diagnose, treat, or prevent any condition, and everyone's body is different. If you are pregnant, breastfeeding, trying to conceive, have a history of disordered eating, or have any health condition, please talk with your doctor before fasting. Your body already has a rhythm. SheFast helps you work with it. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

SOL4 screens
SheFast4 screens

Verdict

The call

The clearest difference is in-app purchases: SOL at none against SheFast's 3. 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. SheFast sells 3 in-app purchases, starting at $3.99 per 7 days. SOL asks for nothing beyond the download.

UpkeepUpdate frequency

SOL ships an update fortnightly, SheFast every 4 weeks. The most recent releases landed on September 22, 2026 and September 17, 2026 respectively.

Scorecard1 real difference · 9 level
SOL versus SheFast: the parameters behind the verdict, then further details
ParameterSOLSheFast
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyFortnightly — betterEvery 4 weeks
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Subscription
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS1615.1 — better
Further details — not scored
Size6 MB37 MB
Age rating4+12+
DeveloperDanny LinsnerOmnivera LLC

In-app purchases

None

SOL

No in-app purchases

3 purchases

SheFast

Subscriptions3
  • Weekly Access$3.997 Days
  • SheFast Premium Monthly$14.991 Month
  • Yearly Access1 Year trial$64.991 Year

Questions

Is SOL free?
SOL is free to download, with no in-app purchases.
Is SheFast free?
SheFast is free to download, with in-app purchases available.
Do SOL or SheFast have ads?
Neither SOL nor SheFast shows ads.
Which is updated more often, SOL or SheFast?
SOL ships an update fortnightly, and SheFast every 4 weeks. Most recently, SOL was updated on September 22, 2026 and SheFast on September 17, 2026.

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