SolarFocus vs Starlit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SolarFocus
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“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/
Starlit
This app uses a unique visual approach to track study sessions, turning completed focus time into stars that form constellations. It helps users visualize their progress and stay motivated through personalized night skies and an exam countdown.
- Visual progress tracking with constellations
- Customizable focus session lengths
- Subject-specific constellations
- Weekly and monthly focus time breakdown
- Exam countdown timer
- Constellation guide collection
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Finish a focus session, and a star lights up. Each subject grows its own constellation, and every session you complete builds a night sky that is yours alone. It is a study timer that lets you feel your progress in the sky, not only in numbers. For exam prep, certification study, university reports and assignments, or daily self-study. Keep sessions short or focus for as long as you like. The time you finish becomes a star. - One tap to start a 15, 25, 45 or 60 minute session, or set any length from 1 to 180 minutes - One subject, one constellation. Which constellation appears next is a surprise, and each one fills in as you keep going - The timer keeps running when you leave the screen, and a notification tells you when it ends - See weekly and monthly focus time, with a breakdown by subject. Your study log builds itself - Exam countdown. Your home screen shows how many days remain until your next exam - Constellation guide. Every constellation you complete is collected in a guide of 36 Your study data, such as subject names and focus history, stays on your device. There are no ads and no tracking across other apps or websites. For how in-app purchases are handled, please see the privacy policy. Free to use: the default Deep Indigo Night sky and every feature, including the constellation guide and the exam countdown. Starlit+ adds 7 more skies, including Aurora, Moonlit Night, Milky Way and Night Cherry Blossoms, plus 18 Starlit+-only constellations such as Pencil and Cat. Starlit+ comes in three options, and all of them include the same content: - Yearly (auto-renewing) - Monthly (auto-renewing) - One-time purchase (a single payment) Yearly and monthly plans renew automatically unless canceled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the period ends. You can manage or cancel your subscription at any time in Settings > Apple Account > Subscriptions. Terms of Service: https://katsu345.github.io/hoshi-atsume-legal/en/terms-of-service/ Privacy Policy: https://katsu345.github.io/hoshi-atsume-legal/en/privacy-policy/
Screenshots
Verdict
SolarFocus and Starlit are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SolarFocus sells 3 in-app purchases, starting at $1.99 per month and Starlit sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
SolarFocus ships an update weekly, Starlit every 10 days. The most recent releases landed on October 30, 2026 and November 8, 2026 respectively.
| Parameter | SolarFocus | Starlit |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Weekly — better | Every 10 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 42 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | 厚然 曾 | Katsuhide Leung |
In-app purchases
SolarFocus
- 行星专注 Pro - 月度订阅$1.991 Month
- 专注行星 Pro - 年度订阅$5.991 Year
- SolarFocus Pro - Lifetime$17.99
Starlit
- Starlit+ Monthly$1.991 Month
- Starlit+ Yearly7 Days trial$14.991 Year
- Starlit+ One-time$19.99









