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Secret Diary Daily with Lock vs its rivals

Side-by-side comparison against Secret Diary Daily with Lock's closest competitors: identity, store metrics, ratings & sentiment, and strategic intel.

Secret Diary Daily with Lock
This App
EMMO - 日记与笔记
Nemesis
A Lemon Diary
Contender
Feelings - Mood Journal
Contender
Doing Doing
Contender
一叶日记·极简卡片心情记录日记
Contender
Seal - Sticker calendar
Peer
Holoholo: Daily Memories
Peer
JuJo: Creative Journal & Diary
Peer
Ondo: AI Journal
Peer
Core Identity
DeveloperMadduckEMMO Corp.ZIZICICI LIMITEDJiani LiChaehui Seo荣九 蔡Daisuke KatayamaFor Pedestrians LLC.Dev2AOnda Labs, Inc.
CategoryLifestyleLifestyleLifestyleLifestyleLifestyleLifestyleLifestyleHealth & FitnessLifestyleLifestyle
PlatformiOSiOSiOSiOSiOSiOSiOSAndroid, iOSiOSiOS
Store Metrics
Rating3.0 / 54.8 / 55.0 / 54.8 / 54.6 / 54.7 / 55.0 / 54.4 / 54.6 / 55.0 / 5
Ratings Count1028,97561297101212166
PriceFreeFreeFreeFreeFreeFreeFreeFreeFreeFree
Release DateMar 19, 2020Apr 17, 2020Jul 25, 2023Aug 18, 2019Sep 26, 2020Jun 5, 2022Jul 1, 2021Jun 13, 2024Sep 26, 2025Mar 5, 2026
Last UpdatedDec 21, 2024Apr 28, 2026Dec 1, 2025Dec 16, 2024Jun 20, 2026Jun 28, 2026May 22, 2024Feb 5, 2025Mar 27, 2026May 2, 2026
Sentiment & Reviews
Sentimentpositive-------mixedexcellent
Score70/100-------50/10090/100
Praises
  • Recent updates provide necessary improvements to the core application experience for active users
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  • Friendly aesthetic and creative journal customization tools appeal to beginners in the writing space
  • Simple and classy user interface design makes the application feel approachable for new users
  • AI co-author conversational style provides genuine emotional support during challenging personal periods
  • Varied AI interaction modes prevent the assistant from simply agreeing with user perspectives
Complaints--------
  • Aggressive paywalling of core features limits the experience for non-paying users post-update
  • Difficult object placement controls hinder the precision of journal layout design
-
Requests
  • Users request additional major updates to address remaining functional gaps in the current build
-------
  • Image editing tools like cropping or erasing are needed for better journal composition
-
Strategic Intel
Strengths
  • Theme customization enables personal interface identity
--
  • "Shake to glitch" visual effect creates a unique interaction loop
  • Ad-free, minimalist utility model lowers user friction
  • iCloud integration ensures data portability across Apple devices
  • Bullet journal task states provide a familiar, low-friction workflow for productivity-focused users.
  • Image export sharing functions as a visual referral mechanism for social growth.
  • Poetic leaf metaphor provides a unique narrative structure for daily entries
  • Minimalist UI design reduces cognitive load compared to feature-heavy competitors
  • Gamified stamp interface drives intuitive daily scheduling habits
  • Theme color customization enables high-fidelity personal aesthetic expression
  • Biometric lock ensures privacy for personal daily records
  • Automated background tracking functions as a core retention loop by removing manual entry friction
  • On-device privacy acts as a defensible trust barrier for privacy-conscious users
  • Creative canvas tools enable artistic expression
  • Massive sticker and image library drives engagement
  • Long-term memory of user goals functions as a retention moat
  • AI-generated postcards create shareable keepsakes that drive organic discovery
Weaknesses
  • Password protection lacks biometric security
  • No cloud-sync functionality limits multi-device usage
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  • Zero revenue model limits long-term maintenance capacity
  • No structured journaling templates increase blank-page intimidation
  • Low review volume (12) limits social proof
  • Manual-entry requirement creates high friction compared to automated logging competitors.
  • Lack of cross-platform synchronization limits utility for power users.
  • Lack of monetization gates limits capital for aggressive feature development
  • Minimalist feature set risks churn when users seek advanced multimedia or AI-driven insights
  • Manual drag-and-drop input creates high friction for daily logging
  • Premium tier gates core visual customization, limiting free-tier appeal
  • 0 rating count on Android platform indicates low visibility and adoption outside of iOS
  • Aggressive paywalling limits free-tier utility
  • Difficult object placement controls hinder layout precision
  • Zero monetization strategy creates a long-term sustainability risk
  • Lack of cloud-save or cross-device sync limits power-user retention
Pricingfree-freefreefreefreefreemiumfreefreemiumfree
MomentumZombie-SteadyZombieMaintenanceMaintenanceZombie-MaintenanceMaintenance
Update Cadence1 versions-5 versions1 versions1 versions, 1 majors/6mo1 versions, 1 majors/6mo1 versions-1 versions, 1 majors/6mo1 versions

Compare Secret Diary Daily with Lock head-to-head

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Secret Diary Daily with Lock, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

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