Comparison

Tesseract vs Luckysleep

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

Head to head
About

Tesseract

This app transforms your daily entries into a visually rich photo diary with animated themes like starlight and black holes. Add photos, organize with custom folders, and secure your memories with biometric locks. It offers journaling prompts and templates to inspire your writing.

Highlights
  • Animated visual themes
  • Photo attachments
  • Biometric entry lock
  • Journaling prompts
  • Custom folders
  • On This Day widget
  • Markdown import/export
Features
Read full description

Keep your days in a photo diary that brings memories to life. Tesseract gives your words and photos a universe of starlight, rain, and black holes. Write a little today, then return to the moments you want to remember. ◆ A space to revisit your memories Motion and depth bring the atmosphere of each entry back to life. Browse your diary horizontally, vertically, or in a grid. ◆ Words and photos that come alive Eleven visual themes inspired by starlight, rain, wormholes, and black holes add motion and depth to your words and photos. Adjust effect intensity and photo placement in supported themes to create your own atmosphere. ◆ Your day in words and photos Write a quick thought or a longer entry, at your own pace. Add photos to hold on to the moments words alone can’t capture. ◆ Revisit past entries Find any memory quickly with the calendar and search. The On This Day widget brings one past entry back to your Home Screen. ◆ Journaling Suggestions to help you begin On iPhone, bring photos, reflection prompts, and places into an entry from Apple’s Journaling Suggestions. Save text you use often as templates to make your next entry easier to begin. ◆ Personal by choice Start without an account. New entries are stored on your device. Lock individual entries with Face ID or Touch ID. Key features - Eleven visual themes - Spatial presentation for words and photos - Photo attachments - Horizontal, vertical, and grid layouts - Calendar and search - Diary templates and writing reminders - On This Day Home Screen widget - Face ID or Touch ID lock for individual entries - Real-time voice dictation on supported devices - Markdown text import and export - Custom folders - Optional iCloud sync An ordinary day can become a scene you will want to revisit. Keep today’s memory in your own universe with Tesseract. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Luckysleep

Features
Read full description

根据常见的噪音频段进行反制。搭配自然声音让白噪音更舒适

Screenshots

Tesseract4 screens
Luckysleep3 screens

Verdict

The call

The clearest difference is price: Tesseract at Free against Luckysleep's $0.99. Luckysleep's advantage is in-app purchases (none vs 3) and iOS requirement (15.2 vs 26.0). On 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

Tesseract is free to download; Luckysleep costs $0.99 up front. Tesseract sells 3 in-app purchases, starting at $1.99 per month. Luckysleep asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Tesseract versus Luckysleep: the parameters behind the verdict, then further details
ParameterTesseractLuckysleep
PriceFree — better$0.99
Rating4.5 (110 ratings) — better—
Positive reviews78.5% of reviews—
Number of ratings110 — better—
Update frequencyEvery 10 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS26.015.2 — better
Further details — not scored
Size17 MB220 MB
Age rating4+4+
DeveloperGoateractionShenzhen Julab Cultural Technology Co., Ltd.

Bugs and requests

Tesseract

Reported bugs

12 issues
  • Data deletion after app updates
  • Journal entries disappearing after switching apps
  • Edit button causing app crashes
  • Photos disappearing when adding new ones
  • Photos disappearing after editing entries
Show 7 more
  • iCloud sync not working between iPhone and iPad
  • Bluetooth keyboard Enter key not functioning
  • App freezing and lagging
  • Text alignment issues in display view
  • Paragraph spacing issues in display view
  • Premium features not working after subscription
  • App crashes on edit button press

Requested features

16 requests
  • Customizable theme colors and backgrounds
  • Additional font options (especially for Chinese)
  • PDF export functionality
  • iCloud sync support
  • Auto-save functionality
Show 11 more
  • Photo position/placement control
  • Galaxy map/note clustering visualization
  • Auto-scroll features
  • Pin/favorite entries functionality
  • Search functionality
  • Weather integration
  • Image filters
  • macOS version
  • Customizable line spacing
  • Live photo support
  • Adjustable text size for long entries

Luckysleep

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Tesseract

Subscriptions2
  • Monthly$1.991 Month
  • Annual$4.991 Year
One-time1
  • Lifetime$12.99
None

Luckysleep

No in-app purchases

Questions

Is Tesseract free?
Tesseract is free to download, with in-app purchases available.
Is Luckysleep free?
Luckysleep costs $0.99, with no in-app purchases.
Do Tesseract or Luckysleep have ads?
Neither Tesseract nor Luckysleep shows ads.

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