Diary - Journal with password
75
Quality Score
Strong
✍️ Bumetric analysis
“
Diary - Journal with password is an Android app from PerfectlySimple in the Lifestyle category, currently rated 4.4★ across 161,875 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 75: Strong (healthy traction). For a Lifestyle 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.
💰 Monthly revenue · now vs forecast
● Right now
$5.0K
per month
→
12-mo forecast
$5.2K – $10.8K
per month
→
24-mo forecast
$6.4K – $19.2K
per month
MID tier
💡 Grow this revenue
Free AI audit of this app’s store listing
- Title & subtitle keyword fit
- Description hook & conversion structure
- Screenshots, ratings, reviews strategy
Typical impact: +2-5× organic installs
📊 Performance Tracking LIVE
5 snapshots on record
Rating
4.4
Reviews
161,875 reviews
Forecast Revenue / mo
$5.0K
Snapshots tracked
5
since May 2026
ONE-TIME · BUILD
💰 Estimated build cost
$140K
↳ What it cost to build · not monthly revenue
Likely range $105K – $190K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Pays back in ~2.3y at current MRR
Synthetic estimate. Inputs: category complexity, file size, screen count, monetization layer, platform reach, age × team-size proxy. Calibrated against 2024-2026 indie-agency rate surveys. Full math + source list on /methodology.
Where the money goes
| 🧱 MVP baseline (design + 1-store ship) | +$28K |
| 📱 5 unique screens × $4.5K | +$22K |
| ⚙ Lifestyle complexity ×1.05 | +$2K |
| 🌐 Cross-platform reach (iOS + Android) | +$29K |
| ⚙ 9.4y maintenance × ~1-person team | +$56K |
Total estimate
$140K
ONE-TIME · EXIT VALUE
💵 Estimated acquisition value
$100K
↳ What it would sell for · not monthly revenue
Marketplace range $75K – $125K · 19× MRR multiple
💸
~0.7× build cost (under-water)
Synthetic estimate. Multiple band derived from ad-supported + 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.
How the multiple was built
| 📺 Ad-supported base | 15× MRR |
| 📅 9.4y proven track record | +20% |
| ⭐ Mature user base (100K+ ratings) | +5% |
Final multiple
19× MRR
👥 Estimated audience size
12.0M
Lifetime downloads (US-equivalent)
Monthly active
865K
Daily active
170K
Synthetic estimate from ratings × category benchmarks. Calibrated against 2024-2026 mobile-attribution retention + DAU/MAU reports. Numbers are US-storefront-equivalent — true global audience can be 5-10× larger for international apps. Full math + source list on /methodology.
How we sized it
| 📲 Lifestyle engagement | ~110 installs / rating |
| 📅 9.4y of rating accumulation | -30% |
| 🔁 Lifestyle D30 retention | 13% |
| 📍 DAU / MAU stickiness | 0.20 |
DAU / MAU
20% sticky
🛠 Estimated tech stack
🤖
Native Android (Kotlin)
High confidence · 80%
Also possible
Flutter
Heuristic guess from app bundle size, category, store description signals, and release-date stack era. Bumetric does not disassemble binaries — for binary-level certainty you would need an SDK intelligence tool or the manifest itself. Reasoning chain on the right. Full ruleset on /methodology.
Signals we read
| 🏷 Category context | Lifestyle |
| 📦 Compact Android bundle | → Native Kotlin |
💀 Maintenance status
Likely abandoned
72%
Last shipped 2025-09-26 · 368 days ago
0 · Active
50 · At risk
100 · Abandoned
Heuristic risk score from time-since-last-update + ratings velocity proxy + Editor's Choice / curated featuring signals. Calibrated against 2024-2025 app-store ranking decay reports. Not a guarantee — a quiet app with a healthy codebase looks the same as an abandoned one until something breaks. Full math on /methodology.
Risk signals
| 📅 1y 0mo since last update | Likely deprioritized |
Verdict
Likely abandoned
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$5.0K/mo · ML-estimated from 234 triggers
Growth rate
+4.0% MoM · MID tier baseline (compound monthly)
6 months
$4.7K – $7.9K
12 months
$5.2K – $10.8K
24 months
$6.4K – $19.2K
Compound growth at +4.0% MoM (tier baseline for MID). Range widens with horizon — typical noise band ±25% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Below median · 44/100MID TIERunderperforming peersRevenue Strength
3.7
Product Quality
8.8
Market Position
0.0
Growth Velocity
5.0
Defensibility
5.8
Operational Safety
7.0
Founder Strength
3.7
Monetization Maturity
1.0
- 💰 Revenue: Modest — $3K - $7K/mo · MID tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.39★ across 161,875 reviews — strong (top 10%).
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 368d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (368d since update).
🎯 For competitors: Mixed picture. Worth competing if you have a clear UX or pricing edge — otherwise crowded segment.
💵 For acquirers: Estimated asking range 18-32× monthly = $90K-$160K.
Composite of 8 dimensions computed deterministically from public signals — no LLM, every score traces back to a measurable input. Default weights shown; "compete" / "acquire" / "invest" lenses re-weight without re-fetching.
Range:
💰 Forecast Revenue / mo
MODELRevenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 6 of 6 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| High install base (161,875 ratings)METRIC | +$12,000 | |
| 5 starREVIEW | +$1,800 | |
| excellent appREVIEW | +$1,500 | |
| Mature app (9y old)METRIC | +$1,500 | |
| Good rating (4.4★)METRIC | +$800 | |
| Ad-supported / freemiumMETRIC | +$600 |
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)
📈 Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Diary - Journal with password
- Developer
- PerfectlySimple
- Bundle ID
- com.mydearjournal
- App Store URL
- Open in App Store
- Category
- Lifestyle
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- mydearjournal.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
- $5.0K/mo
- Top-grossing rank
- Not found
- All-time revenue
- Not found
- Pricing
- Not found
Founder
Founder data not yet collected for this app.
Funding
Funding data not yet collected for this app.
Press & Links
Press & Links data not yet collected for this app.
Contacts & Socials
Contacts & Socials data not yet collected for this app.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
📝 About this app
Secret thoughts and moments should always remain secret and a private diary should always be intimate, beautiful and safe. With that in mind, we dedicated our efforts to create a simple and beautiful diary application that helps you lock your secrets with your own password.
Use this diary and put down all your thoughts or even future plans and follow them as the time passes. Make it your trustworthy friend who never judges you and who's always there for you.
A good diary required good features, so here are some of the great features especially created for you:… View full description on the official store →
Use this diary and put down all your thoughts or even future plans and follow them as the time passes. Make it your trustworthy friend who never judges you and who's always there for you.
A good diary required good features, so here are some of the great features especially created for you:… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →🔖 v2.0.0🔄 updated 1y ago📂 Lifestyle💰 Free📺 Ad-supported🚀 Launched 2017 (9y old)
📅
What Worked™ · Development Pipeline
2 EVENTS TRACKEDDetected changes in this app over its tracked lifetime — each event links cause (what changed) to effect (what moved). Sorted newest first.See full history →Version history →
2026-07
📸
Refreshed store screenshots — 8 of 8 updated
→ 30 days after: reviews −65 high confidence
2026-05
🚀
First tracked snapshot — initial data captured
→ 30 days after: reviews −53 high confidence
📸
Store Page History
8 SCREENSHOT CHANGESEvery time a developer swaps a store screenshot we archive both versions. Compare side-by-side to see what messaging / visuals changed.
iPhone screenshots
Slot 1
2 ver.
2 ver.
2026-05-08
2026-07-12
Slot 2
2 ver.
2 ver.
2026-05-08
2026-07-12
Slot 3
2 ver.
2 ver.
2026-05-08
2026-07-12
Slot 4
2 ver.
2 ver.
2026-05-08
2026-07-12
Slot 5
2 ver.
2 ver.
2026-05-08
2026-07-12
Slot 6
2 ver.
2 ver.
2026-05-08
2026-07-12
🔔
Track this app’s revenue
FREEGet an email when revenue moves by your threshold. No spam, unsubscribe in one click.
📝 Description
95
BU Score · Transcendent
Full revenue analysis
Read the article-style breakdown for Diary - Journal with password: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.
More by PerfectlySimple
View all →📦 Portfolio summaryINDIE studio
2apps·$5K/mocombined
⚠ Concentrated — top app contributes 86% of combined revenue (single-app dependency)
About this analysis
Why high confidence: 161,875 ratings · no founder-verified revenue (model estimate only).
❓ Frequently Asked Questions
10 answers · auto-generated from this app's public dataHow much does Diary - Journal with password make per month?▴
Based on our ML-calibrated revenue forecast, Diary - Journal with password earns approximately $5.0K/mo. This is a US-storefront-equivalent estimate; global revenue can be several times larger for internationally-distributed apps. See the methodology page for the full formula and confidence bands.
Is Diary - Journal with password profitable?▴
With estimated build cost $140K and monthly revenue $5.0K, Diary - Journal with password looks break-even-grade — payback period sits around 2.3 years. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.
How many users does Diary - Journal with password have?▴
Estimated audience: ~12.0M lifetime downloads, ~865K monthly active users, and ~170K daily active users. Derived from ratings count × category installs-per-rating × age decay. US-storefront-equivalent — global audience can be 5-10× larger for internationally-distributed apps.
What apps are like Diary - Journal with password?▴
Browse the full Lifestyle category catalog to find similar apps with revenue, build cost, audience and tech stack data. Each /p/{slug} page also shows a Compare side-by-side widget with three peer apps from the same niche.
What is Diary - Journal with password built with?▴
Our heuristic places Diary - Journal with password on the Native Android (Kotlin) stack (High confidence, 80%). Signals: app bundle size, category context, store-description markers, release-date era. We don't disassemble binaries. Alternative possibilities: Flutter.
Is Diary - Journal with password still actively maintained?▴
Maintenance status: Likely abandoned (72% abandonment risk). Last shipped version was 1+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.
How much would Diary - Journal with password sell for?▴
Estimated acquisition value: $100K (marketplace range $75K – $125K). Calculated as 19× monthly revenue using the standard multiple for the detected monetization model + adjustments for age, rating quality and category demand. Calibrated against 2024-2026 Flippa / Acquire.com / MicroAcquire closed-deal medians.
When was Diary - Journal with password last updated?▴
Diary - Journal with password last shipped a new version on 2025-09-26 — more than 1 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.
Who makes Diary - Journal with password?▴
Diary - Journal with password is published by PerfectlySimple on the Google Play Store. See the full publisher portfolio (other apps by the same developer) via the More by developer block on the product page above.
What is Diary - Journal with password's BU Score?▴
Diary - Journal with password has a BU Score of 75/100 (Strong). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.