Comparison

SolarFocus vs Liminal Time

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

Head to head
About

SolarFocus

Features
Read full description

“Through hardships to the stars —— Per aspera ad astra” In an era where attention is constantly fractured by distractions, it is easy to lose our rhythm in anxiety and noise. Yet in the vast expanse of deep space, Mercury, Venus, Earth, Mars... every celestial body travels faithfully along its predetermined orbit, calm and unhurried. No chaos, no rush — only eternal gravity and disciplined order. SolarFocus transforms each focus session into an interstellar journey across the cosmos. When you tap start, you enter your own planetary orbit — every minute and second of dedicated effort is no longer merely time slipping away, but energy powering your exploration and shimmering cosmic stardust. --- Core Features & Highlights 【The Sun & 8 Planetary Focus Modes】 • The Sun Infinite Count-Up: Unrestricted immersive flow, recording every moment of deep, sustained effort. • 8 Planetary Pomodoro Timers: - Mercury (10 min): Meditation / Quick Mind Clearing - Venus (15 min): Micro-tasks / Utilizing spare time - Earth (25 min): Classic Pomodoro Technique - Mars (30 min): Daily light work & study - Jupiter (40 min): Design concepts / Deep reading - Saturn (50 min): High-efficiency creative flow - Uranus (90 min): Intensive brainstorming - Neptune (120 min): Deep research & specialized mastery 【Authentic Keplerian Orbits & NASA Celestial Sync】 • Built-in high-precision Keplerian planetary orbital algorithm reproducing real celestial physics. • Live celestial data sync to observe current solar system planetary longitudes in real time. • Freely adjust orbital speed from 1x to 1000x, pinch-to-zoom and command your personal celestial chart. 【Cosmic Odyssey Mileage & Stardust Achievements】 • Focus Mileage Visualization: Calculates your distance traveled across the galaxy and orbital angle around the Sun. • Stardust & Progression: Build focus streaks to gather stardust and witness the compound power of discipline. • Interstellar Exploration Badges: Time Apprentice, Interstellar Voyager, Night Guardian, Dawn Watcher, and many more. 【Multi-Dimensional Cosmic Statistics】 • Clear daily focus heatmaps and weekly/monthly/annual productivity trends. • Planetary time distribution pie charts to analyze your energy allocation. 【Dynamic Island & Lock Screen Live Activities】 • Full support for iOS Dynamic Island and Lock Screen Live Activities: glance at your orbit progress without unlocking your phone. 【Elegant & Versatile Home Screen Widgets】 • Multi-sized solar system dashboards, cosmic travel stats, daily inspirational quotes, and quick-control widgets. 【Personal Customization & iCloud Sync】 • Custom Celestial Bodies: Freely configure name, color, size, orbital period, and target focus duration. • Seamless iCloud Multi-Device Sync: Safe local-first storage with automatic cloud backup across all your Apple devices. • Immersive cosmic white noise and refined haptic feedback. --- Ideal For - Deep study sessions, exam preparation, and cramming - Coding, system architecture, writing, and design - Pomodoro-based daily workflow and GTD time management - Mindfulness meditation, morning routines, and reading habits May this tranquil starry sky accompany you through the noise and guide you to your own shining stars. --- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Liminal Time

This app transforms focus time into a visual journey through space. Choose from celestial worlds like planets and black holes, each with its own unique clock rhythm. Track your sessions and enjoy an uncluttered, single-screen experience.

Highlights
  • Celestial world themes
  • Customizable focus durations
  • Local time preview
  • Session tracking and achievements
  • Desk-clock view
  • Multi-language support
Features
Read full description

Liminal Time brings a space clock, moving celestial worlds and focus timers into one quiet screen. Choose a world, set aside some time, and give your attention to the thing in front of you. A clock with a universe around it Visit Mercury, Mars, Earth and Jupiter, or settle beside Cygnus X-1, Sagittarius A* and M87*. Each of the seven worlds has its own visual character. Use the clock in portrait or landscape. After a short pause, the clock and its world move into a centered view; tap to return to the controls. Time at your own pace Set a countdown or start counting up. Choose hours and minutes with the wheel controls, then pause, continue or finish as needed. Save focus-and-rest itineraries and tap to continue after each stage. Choose an arrival sound or keep reminders silent. Make the display your own Choose a clock typeface, color and celestial layout. Save your world, style, sound and usual duration together. Adjust the soundscape volume or mute it. Celestial clock widgets bring a little universe to your Home Screen and open your chosen world. See where your time went Completed focus voyages appear in your star map and history. Look back at a weekly constellation and collect achievements as you go. A daily streak is not required. A gentler evening display Evening settings can dim the screen, reduce motion and use warmer colors. Choose 15, 30 or 60 minutes, with sound fading near the end. No account is required. Preferences, focus history and achievements stay on your device. You choose what to share. Planet-paced time and celestial visuals are artistic interpretations, not astronomical or physical measurements. Real-world time is shown separately, and focus sessions are measured in real time.

Screenshots

SolarFocus4 screens
Liminal Time4 screens

Verdict

The call

The clearest difference is price: SolarFocus at Free against Liminal Time's $1.99. Liminal Time's advantage is in-app purchases (none vs 3). On update cadence, ads, device support and iOS requirement 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

SolarFocus is free to download; Liminal Time costs $1.99 up front. SolarFocus sells 3 in-app purchases, starting at $1.99 per month. Liminal Time asks for nothing beyond the download.

UpkeepUpdate frequency

SolarFocus ships an update weekly, Liminal Time every 11 days. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 8 level
SolarFocus versus Liminal Time: the parameters behind the verdict, then further details
ParameterSolarFocusLiminal Time
PriceFree — better$1.99
Rating—4.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyWeekly — betterEvery 11 days
AdsNoNo
In-app purchasesYesNo — better
Monetization—Paid
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better17.0
Further details — not scored
Size42 MB108 MB
Age rating4+4+
Developer厚然 曾嘉远 李

In-app purchases

3 purchases

SolarFocus

Subscriptions2
  • 行星专注 Pro - 月度订阅$1.991 Month
  • 专注行星 Pro - 年度订阅$5.991 Year
One-time1
  • SolarFocus Pro - Lifetime$17.99
None

Liminal Time

No in-app purchases

Questions

Is SolarFocus free?
SolarFocus is free to download, with in-app purchases available.
Is Liminal Time free?
Liminal Time costs $1.99, with no in-app purchases.
Do SolarFocus or Liminal Time have ads?
Neither SolarFocus nor Liminal Time shows ads.
Which is updated more often, SolarFocus or Liminal Time?
SolarFocus ships an update weekly, and Liminal Time every 11 days. Most recently, SolarFocus was updated on October 15, 2026 and Liminal Time on October 13, 2026.

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