Comparison

Lightpage vs Cosmic Sleep

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

Head to head
About

Lightpage

This AI-powered notebook offers a unique way to capture thoughts via voice or text. It provides daily personalized inspiration and acts as a thought partner, remembering your journey to help you discover patterns and move forward.

Highlights
  • Voice and text note capture
  • Personalized daily inspiration
  • AI guide with memory
  • Chat for perspective
  • Sync across devices
  • Private and secure
Features
Read full description

Meet Lightpage: the first notebook that writes back. Brain dump by voice or text, then watch Lightpage connect the dots across your notes over time. Every morning, Lightpage finds you art, quotes, and ideas tailored to your thoughts. On Sundays, Lightpage writes you a letter to recap your week, and to help you plan ahead. It's not quite a journal and not quite a notes app. It's a daily habit that moves your life forward, off the page. WHAT MAKES LIGHTPAGE DIFFERENT Your guide has memory Lightpage remembers your journey. It notices patterns, revisits themes, and helps you see how far you've come. Daily inspiration, personally chosen Wake up to art, quotes, and essays selected based on what you've been thinking about—not what's trending. Brain dump, your way Capture thoughts with text or voice. No structure required. Just get it out of your head. A thought partner when you need one Chat with your AI guide whenever you want perspective, clarity, or just someone to think alongside. WHAT PEOPLE ARE SAYING "This is the first time I've experienced AI actually improving my life." "By far the single most useful thing in my professional and personal life right now." "How is it this good? It's miles ahead of any other AI product I've tried." FEATURES - Voice and text capture - Daily personalized prompts and inspiration - AI guide with persistent memory - Seamless sync across mobile and web - Private and secure—your thoughts stay yours, and are never used to train AI - Beautiful, distraction-free design Download Lightpage and start your first entry today. —— Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Cosmic Sleep

Features
Read full description

Cosmic Sleep helps you track your baby’s sleep in a way that feels calm, clear, and easy to understand. Instead of digging through lists and timestamps, Cosmic Sleep turns the day into simple visual orbits so you can quickly compare planned sleep with actual sleep, spot patterns, and adjust as needed. Log naps, track night sleep, review progress over time, and get a clearer picture of your baby’s rhythm. Whether you are building a routine, watching wake windows, or just trying to make sense of the day, Cosmic Sleep gives you a more intuitive way to understand sleep. Features: Visual sleep orbits for an easy at-a-glance view Log naps and night sleep throughout the day Compare scheduled sleep with actual sleep Review sleep history across days Explore trends and day-over-day patterns Flexible settings for time, appearance, and reminders Widgets Apple Watch App Cosmic Sleep is designed to make sleep tracking feel less overwhelming and more meaningful.

Screenshots

Lightpage4 screens
Cosmic Sleep4 screens

Verdict

The call

The clearest difference is in-app purchases: Cosmic Sleep at none against Lightpage's 3. Lightpage's advantage is update cadence (every 11 days vs every 7 months) and iOS requirement (16.4 vs 26.0). On price, 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. Lightpage sells 3 in-app purchases, starting at $4.99 per 7 days. Cosmic Sleep asks for nothing beyond the download.

UpkeepUpdate frequency

Lightpage ships an update every 11 days, Cosmic Sleep every 7 months. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.

Scorecard3 real differences · 7 level
Lightpage versus Cosmic Sleep: the parameters behind the verdict, then further details
ParameterLightpageCosmic Sleep
PriceFreeFree
Rating4.9 (374 ratings) — better—
Positive reviews91.0% of reviews—
Number of ratings374 — better—
Update frequencyEvery 11 days — betterEvery 7 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS16.4 — better26.0
Further details — not scored
Size98 MB55 MB
Age rating17+4+
DeveloperLightpage, Inc.Matt Krussow

Bugs and requests

Lightpage

Reported bugs

4 issues
  • Connection issues (offline when WiFi/data is okay)
  • AI chat message limit resets instead of counting down
  • Flawed sign-in process (email verification loop)
  • Delete account option does not work

Requested features

7 requests
  • Email weekly letter
  • App to speak responses in chat (hands-free option)
  • Android version for cross-device sync
  • Ability to upload own voice recordings taken elsewhere
  • More forgiving free trial (e.g., text limits per day)
Show 2 more
  • Option to adjust AI to be more personal
  • Different prompts

Cosmic Sleep

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Lightpage

Subscriptions3
  • Weekly$4.997 Days
  • Monthly$14.991 Month
  • Yearly$139.001 Year
None

Cosmic Sleep

No in-app purchases

Questions

Is Lightpage free?
Lightpage is free to download, with in-app purchases available.
Is Cosmic Sleep free?
Cosmic Sleep is free to download, with no in-app purchases.
Do Lightpage or Cosmic Sleep have ads?
Neither Lightpage nor Cosmic Sleep shows ads.
Which is updated more often, Lightpage or Cosmic Sleep?
Lightpage ships an update every 11 days, and Cosmic Sleep every 7 months. Most recently, Lightpage was updated on November 8, 2026 and Cosmic Sleep on November 9, 2026.

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