Comparison

SOL vs Moodii

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

Head to head
About

SOL

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SOL (์†”) โ€” 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 โ€” in real time. As you fast, SOL guides you through each biological phase: Fed State โ†’ Insulin Dropping โ†’ Fat Burning โ†’ Ketosis โ†’ Autophagy โ†’ Deep Autophagy โ†’ Growth Hormone Surge โ†’ Immune Reset FEATURES โ€ข Beautiful minimal timer with progress ring โ€ข Real-time body phase updates with scientific sources โ€ข Full body timeline โ€” see all 8 phases and your progress โ€ข Tap any phase for in-depth science and PubMed sources โ€ข Smart notifications at each milestone โ€ข Stats dashboard โ€” track your fasting journey โ€ข Background timer โ€” keeps running when you close the app โ€ข Light & dark mode with handcrafted watercolor textures โ€ข Home screen widget โ€ข Community pulse โ€” you're not fasting alone โ€ข 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

Moodii

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Moodii is a simple mood tracker designed for fast daily reflection. Log your mood, feelings, context, and notes in seconds. Review your entries with a calendar view, see mood patterns in trends, set local reminders, and use widgets or quick actions to start logging faster. Moodii keeps the experience focused, private, and easy to use.

Screenshots

SOL4 screens
Moodii4 screens

Verdict

The call

The clearest difference is update cadence: Moodii at every 3 days against SOL's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SOL ships an update fortnightly, Moodii every 3 days. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

Scorecard1 real difference ยท 5 level
SOL versus Moodii: the parameters behind the verdict, then further details
ParameterSOLMoodii
PriceFreeFree
Update frequencyFortnightlyEvery 3 days โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS1615.0 โ€” better
Further details โ€” not scored
Size6 MB19 MB
Age rating4+17+
DeveloperDanny LinsnerChen Le Yong

In-app purchases

None

SOL

No in-app purchases

None

Moodii

No in-app purchases

Questions

Is SOL free?
SOL is free to download, with no in-app purchases.
Is Moodii free?
Moodii is free to download, with no in-app purchases.
Do SOL or Moodii have ads?
Neither SOL nor Moodii shows ads.
Which is updated more often, SOL or Moodii?
SOL ships an update fortnightly, and Moodii every 3 days. Most recently, SOL was updated on October 6, 2026 and Moodii on October 7, 2026.

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