Diary Journal - With Lock icon
Diary with Lock - iDiary icon
FamilyNest - Family Organizer icon
+6

Heyou Co.

For privacy-conscious individuals seeking secure, password-protected environments for personal journaling, note-taking, and media storage.

9apps3.6(507) Multi-theme

Snapshot

Who is Heyou Co.?

Providing private, password-protected digital spaces for personal journaling, note-taking, and secure media storage.

Target audience

Privacy-conscious individuals seeking securePassword-protected environments for personal journalingNote-taking

Active nemesis

Legendary Software Labs

Other rivals

Portfolio

Free 9
9
apps
Lifestyle4
Productivity3
Medical1
Photo & Video1

Last updated

Diary Journal - With Lock

v3.7

7mo ago

Steady

Publisher DNA

What defines Heyou Co.?

Publisher DNA

Primary focus

Privacy-focused lifestyle and productivity utilities

Scale

indie

Target audience

Privacy-conscious individuals seeking secure, password-protected environments for personal journaling, note-taking, and media storage.

Signature Patterns

  • Core security focus across all titles, including password protection and fake-passcode features.
  • Monetization primarily through free-to-use models with select subscription-based premium tiers.
  • Functional design prioritizing data privacy for personal lifestyle and productivity tasks.
  • Consistent inclusion of multimedia support (photos/videos) within secure containers.
Steady

Portfolio momentum

Released 4 updates across 9 apps in the last 6 months, with a mix of active and maintenance-stage titles.

Last release 103d agoActive apps 4Abandoned 5

Portfolio

What does Heyou Co. ship?

Tightly focused on 4 markets (Japan, Mexico, Spain, United States).

Based on 1 of 9 apps with localized market data, more coverage rolling in as scans complete · last scanned .

Americas (2)

  • Mexico1 / 1
  • United States1 / 1

Europe (1)

  • Spain1 / 1

Asia-Pacific (1)

  • Japan1 / 1

Core markets (1/1 apps)

JapanMexicoSpainUnited States

User Sentiment

How do users feel about their apps?

0

Positive apps

0

Neutral / mixed

1

Negative apps

10/100

Avg sentiment score

Rivals

Who does Heyou Co. compete with?

The rivals identified

Nemeses(1)

Legendary Software Labs

known forPrivate Photo Vault - Pic Safe

1 app4.8Photo & Video

The dominant market leader with an aggressive 14-release cadence in the last six months, maintaining high feature velocity compared to the target's stagnant 2023 update status.

Contenders(3)

Anuj Tenani

known forHide Photos Video -Hide it Pro

1 app4.7Photo & Video

An established rival that utilizes a 'disguised app' strategy similar to the target but with significantly higher market penetration.

KeepSafe Software

known forSecret Photo Vault: Keepsafe

1 app4.7Photo & Video

A high-scale rival focusing on 'Shared Albums' and social privacy, areas where the target app is currently feature-void.

LockMyPix

known forLockMyPix Secret Photo Vault

1 app4.7Photo & Video

Users report: A modern contender that matches the target's 'Fake Passcode' and 'Break-in Alert' features while maintaining active development.

Same space(4)

IdeaSolutions S.r.l.

known forSecret photos - KYMS

1 app4.7Photo & Video

A legacy peer that pioneered the 'Calculator' decoy interface, a specific sub-genre of the vault market.

Kyle Allen

known forHiddenVault Secret Photo Vault

1 app4.7Photo & Video

A direct feature-match peer that competes on simplicity and a 'no-logs' privacy promise.

NQ Mobile

known forVault - Hide photos & videos

1 app4.2Photo & Video

A productivity-oriented vault that targets a more professional user base.

RV AppStudios

known forBest Secret Folder

1 app4.7Photo & Video

Positions as a utility-first folder manager rather than a photo-specific gallery.

New entrants(1)

AppMadang

known forClock Vault - My Secret Album!

1 app4.6Photo & Video

A rising threat that uses a unique 'Time-based' unlock mechanism to differentiate in a crowded market.

The Analyst's Read

The bottom line on Heyou Co.

Bottom line

Heyou Co., Ltd. is a specialized indie publisher that has successfully carved out a niche in privacy-centric personal utilities. Their ability to maintain high user ratings in the lifestyle and productivity categories suggests strong product-market fit, though future growth depends on their ability to modernize legacy apps currently in maintenance.

Frequently asked questions

How many apps does Heyou Co. publish?
Heyou Co. has 9 apps tracked by Marlvel, primarily in the Lifestyle category.
What kind of apps does Heyou Co. make?
Heyou Co.'s portfolio is concentrated in Lifestyle and Productivity, with an average rating of 3.6/5 across rated apps.
What is Heyou Co.'s top app?
By review volume across the portfolio, Diary Journal - With Lock is Heyou Co.'s best-known app tracked by Marlvel.
In how many countries are Heyou Co.'s apps available?
Marlvel has tracked Heyou Co.'s apps across 4 countries.

What fed this analysis

Apps analyzed:
9
With full intel:
1
With overview:
9
Website scraped:
yes
Social presence:
no

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Heyou Co., its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Heyou Co. intelligence.” Updated 2026-05-10. https://marlvel.ai/publishers/heyou-co-ltd

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Data licensed under CC-BY-NC 4.0