Winter Princess Diary: Lock

73
Winter Princess Diary: Lock is an Android app from Cards in the Tools category, currently rated 4.6β across 19,603 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Quality Score is 73: Strong (healthy traction). For a Tools app, that means healthy traction. The full BU Investment Matrix below scores 8 dimensions including monetisation, growth, and operational risk.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
- Title & subtitle keyword fit
- Description hook & conversion structure
- Screenshots, ratings, reviews strategy
π Performance Tracking LIVE
Synthetic estimate. Inputs: category complexity, file size, screen count, monetization layer, platform reach, age Γ team-size proxy. Calibrated against 2024-2026 indie-agency rate surveys. Full math + source list on /methodology.
| π§± MVP baseline (design + 1-store ship) | +$28K |
| π± 5 unique screens Γ $4.5K | +$22K |
| π In-app purchase plumbing | +$9K |
| β Tools complexity Γ0.90 | $-5949 |
| π Cross-platform reach (iOS + Android) | +$29K |
Synthetic estimate. Multiple band derived from iap / freemium model + age, rating quality, category demand, and user-base maturity. Calibrated against 2024-2026 indie-app-marketplace closed-deal medians. Full math + comparable deal list on /methodology.
| π IAP / freemium model base | 28Γ MRR |
| β β rating β₯ 4.4 (solid) | +8% |
| π· Tools category multiple | -8% |
Synthetic estimate from ratings Γ category benchmarks. Calibrated against 2024-2026 mobile-attribution retention + DAU/MAU reports. Numbers are US-storefront-equivalent β true global audience can be 5-10Γ larger for international apps. Full math + source list on /methodology.
| π² Tools engagement | ~190 installs / rating |
| π Tools D30 retention | 22% |
| π DAU / MAU stickiness | 0.18 |
How we forecast this revenue
MEDIUM CONFIDENCEBU Investment Matrix
Mixed signals Β· 60/100BIG TIERcompetitive but cautious- π° Revenue: Healthy β $280K - $1540K/mo Β· BIG tier Β· medium-low confidence, trajectory unclear.
- β Quality: 4.64β across 19,603 reviews β exceptional (top 1% in category).
- π Market: Not yet charting in any of the 9 monitored markets.
- π Growth: β last update 788d ago β possibly dormant.
- β οΈ Risk: Moderate β dormant (788d since update).
π° Forecast Revenue / mo
MODEL| Mid install base (19,603 ratings)METRIC | +$5,500 | |
| Excellent rating (4.6β )METRIC | +$2,200 | |
| highly recommendREVIEW | +$1,400 | |
| Established app (6y old)METRIC | +$800 | |
| Ad-supported / freemiumMETRIC | +$600 |
π Reviews Growth
LIVEβ Rating Trend
LIVEProfile & Insights
Identification
- App name
- Winter Princess Diary: Lock
- Developer
- Cards
- Bundle ID
- pl.netigen.winterprincess
- App Store URL
- Open in App Store
- Category
- Tools
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- cardsapp.com
- Tagline
- Not found
- Description
- Not found
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Reported revenue signal / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- Model estimate / mo
- $700K/mo
- Top-grossing rank
- Not found
- All-time revenue
- Not found
- Pricing
- $0.99 - $99.99 per item
Founder
Funding
Press & Links
Contacts & Socials
π About this app
<h2>A Magical Place for Your Memories</h2>
β <b>Winter Princess Diary</b> is beautifully designed for those who cherish their memories! Perfectly suited for girls, this app features enchanting graphics of frozen crystals, snowflakes, and a magical winter princess. πβ
<h2>Record Your Thoughts and Dreams</h2>
β Use this <b>Diary with Lock</b> to jot down your thoughts, future plans, or daily reflections. It's your trustworthy friend, always ready to listen without judgment.β¦ View full description on the official store β
What Workedβ’ Β· Development Pipeline
2 EVENTS TRACKEDStore Page History
8 SCREENSHOT CHANGES2 ver.
2 ver.
2 ver.
2 ver.
2 ver.
2 ver.
Tech & Domain Intel β cardsapp.com
- Mail provider
- Google Workspace
- Tech stack
- Google Workspace
Track this appβs revenue
FREEπ Description
95
More by Cards
View all βWhy high confidence: 19,603 ratings Β· no founder-verified revenue (model estimate only).










