Comparison

FastMate vs Solstice

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

Head to head
About

FastMate

Features
Read full description

Take control of your health with FastMate, the simple and intuitive companion for tracking intermittent fasting, hydration, and weight. Whether you are a beginner exploring the 16:8 method or an experienced practitioner doing OMAD, FastMate helps you build lasting healthy habits. FASTING TIMER & TRACKING Track your fasting sessions with a real-time countdown and detailed history. FastMate supports all major fasting protocols and allows for complete customization: • Popular plans: 16:8, 14:10, 12:12, 18:6, 20:4, and OMAD. • Circadian rhythm fasting. • Personalized fasting schedules tailored to your lifestyle. • Detailed statistics to visualize consistency and progress. WEIGHT MANAGEMENT Log your weight effortlessly and monitor trends over time. • Intelligent trend analysis to see progress beyond the daily scale number. • Visual progress charts to keep you motivated. • Support for Kilograms (kg), Pounds (lbs), and Stones (st). • Goal setting to help you reach your target milestones. HYDRATION TRACKER Proper hydration is essential for successful fasting. FastMate makes it easy: • Personalized daily water goals. • Quick-tap buttons for fast logging of 10+ beverage types. • Support for all common volume units (ml, L, oz, cups, etc.). • Visual progress indicators to help you reach your fluid intake goals. COMPLETE PERSONALIZATION • Guided onboarding to establish your baseline. • Customizable reminders and notification schedules. • Multiple visual themes to match your style. • Sync and adjust your data anytime. INTELLIGENT ANALYTICS Go beyond simple logging. See how your fasting patterns correlate with weight changes and monitor your hydration consistency throughout your fasting windows. Start tracking your journey today. Download FastMate and take control of your wellness!

About

Solstice

Track your intermittent fasting with biological precision and a clean, clutter-free design. Monitor metabolic stages and build consistent habits without subscriptions or paywalls. Offers elegant timers, visual progress tracking, and privacy-focused, on-device data storage.

Highlights
  • Elegant circular timer with tactile adjustments
  • 5 metabolic fasting stages tracking
  • Flexible and customizable fasting protocols
  • Visual calendar heatmap for consistency
  • Solar and dark mode themes
  • 100% private and on-device data
Features
Read full description

Track your fasts with elegance, biological precision, and zero clutter. Solstice is an intermittent fasting tracker built with a clean, battery-efficient design. Track your circadian rhythms, monitor real-time metabolic stages (fat burning, autophagy, deep ketosis), and build consistent fasting habits without subscriptions or paywalls. KEY FEATURES: • Elegant Circular Timer: Real-time progress with tactile dial adjustments. • 5 Metabolic Fasting Stages: Understand when your body enters Blood Sugar Reset, Glycogen Depletion, Fat Burning, Autophagy, and Deep Ketosis. • Flexible Fasting Protocols: Choose 16:8, 18:6, 20:4 (Warrior), 14:10, 23:1 (OMAD), or customize your own. • Visual Calendar Heatmap: Glanceable monthly consistency view with active streak counters. • Solar & Dark Mode Themes: Deep midnight OLED dark mode and radiant solar accents. • 100% Private & On-Device: No account required, no ads, no trackers. Your health data stays on your device. DISCLAIMER: Solstice provides general wellness tracking and is not a substitute for professional medical advice. Always consult a healthcare provider before beginning any fasting routine.

Screenshots

FastMate4 screens
Solstice4 screens

Verdict

The call

The clearest difference is ads: Solstice at none against FastMate's shown. Solstice also leads on update cadence (every 9 days vs every 5 months). FastMate's advantage is iOS requirement (15.6 vs 18.2). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

FastMate ships an update every 5 months, Solstice every 9 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
FastMate versus Solstice: the parameters behind the verdict, then further details
ParameterFastMateSolstice
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 5 monthsEvery 9 days — better
AdsYesNo — better
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS15.6 — better18.2
Further details — not scored
Size29 MB5 MB
Age rating12+4+
DeveloperTensifyTech LLPJames Grusy

In-app purchases

None

FastMate

No in-app purchases

None

Solstice

No in-app purchases

Questions

Is FastMate free?
FastMate is free to download, with no in-app purchases.
Is Solstice free?
Solstice is free to download, with no in-app purchases.
Do FastMate or Solstice have ads?
FastMate shows ads; Solstice does not.
Which is updated more often, FastMate or Solstice?
FastMate ships an update every 5 months, and Solstice every 9 days. Most recently, FastMate was updated on October 28, 2026 and Solstice on October 31, 2026.

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