History Book - Browse & Search
49
Quality Score
Emerging
History Book - Browse & Search
Low confidence
✍️ bumetric analysis
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History Book - Browse & Search is an iOS app from And a Dinosaur in the Productivity category, currently rated 4.4★ across 14 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.
Quality Score is 49: Emerging (early traction worth watching). For a Productivity app, that means early traction worth watching. 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
$1.8K
per month
→
12-mo forecast
$1.6K – $5.6K
per month
→
24-mo forecast
$1.4K – $13.0K
per month
INDIE 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
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
ONE-TIME · BUILD
💰 Estimated build cost
$55K
↳ What it cost to build · not monthly revenue
Likely range $40K – $75K
$25K · MVP floor
$100K · indie scale
$500K+ · studio build
📈
Slow ROI — current MRR is well below build cost
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 |
| ⚙ Productivity complexity ×1.10 | +$5K |
Total estimate
$55K
🛠 Estimated tech stack
🍎
Native iOS (SwiftUI)
High confidence · 95%
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
| 📝 Stack mentioned in store description | Native iOS (SwiftUI) |
🔬
How we forecast this revenue
MEDIUM CONFIDENCEBaseline
$1.8K/mo · ML-estimated from 234 triggers
Growth rate
+6.0% MoM · INDIE tier baseline (compound monthly)
Direction
Headwinds: rating drift may slow acquisition
6 months
$1.5K – $3.6K
12 months
$1.6K – $5.6K
24 months
$1.4K – $13.0K
Compound growth at +6.0% MoM (tier baseline for INDIE). Range widens with horizon — typical noise band ±40% at 6mo.. Ranges widen with horizon — distant futures carry more uncertainty.
📊
BU Investment Matrix
Early-stage solo · 41/100INDIE TIERexpected for tierGrowth Velocity
5.0
Founder Strength
7.1
Product Quality
3.5
Revenue Strength
3.3
Monetization Maturity
1.0
Defensibility
6.0
Market Position
0.0
Operational Safety
7.0
- 💰 Revenue: Modest — $715 - $4471/mo · INDIE tier · medium confidence, trajectory unclear.
- ⭐ Quality: 4.36★ across 14 reviews — weak — significant quality concerns.
- 📍 Market: Not yet charting in any of the 9 monitored markets.
- 📈 Growth: ⚠ last update 611d ago — possibly dormant.
- ⚠️ Risk: Moderate — dormant (611d 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 = $32K-$57K. Portfolio play ($42K/mo combined) commands premium.
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 5 of 5 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Paid app ($6.99)METRIC | +$2,800 | |
| Good rating (4.4★)METRIC | +$800 | |
| Established app (4y old)METRIC | +$800 | |
| Single-language (English only)METRIC | −$400 | |
| Pre-traction phase (14 ratings)METRIC | −$300 |
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.
🆕 What's New · v1.1.3
- Implemented debouncing for search to improve performance and reduce redundant calls.
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- History Book - Browse & Search
- Developer
- And a Dinosaur
- Bundle ID
- com.andadinosaur.HistoryBook
- App Store URL
- Open in App Store
- Category
- Productivity
- Content rating
- 4+
- Languages
- EN
Company
- Website
- Not found
- Tagline
- Zhenyi Tan And a Dinosaur
- Description
- Not found
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Available
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $144/mo
- Top-grossing rank
- Outside top 100 in US Productivity
- 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
- Socials
- facebook facebook.com/help/instagram/280495901… · youtube youtube.com/watch?v=Zq6-b9_V9lA
- feedback@technotesapp.com
- Phone
- Not found
- Contact page
- andadinosaur.com/lucky-now-supports-b…
- About page
- andadinosaur.com/about
📈Ratings growth14 ratings+600% lifetimeShow 3-year history estimate ▾
Tracked (10 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
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
History Book automatically saves your browsing history for searching later.
By default, it only auto-saves pages that contain an article, so you don’t have to worry about it saving your sensitive data.
If you want, you can configure it to auto-save every webpage. If you are feeling paranoid, you can disable auto-save entirely. You can also exclude websites that you never want to auto-save.
You can use it as a read-it-later app, but I mostly use it as a search app.
For privacy reasons, History Book stores your browsing history in iCloud.… View full description on the official store →
By default, it only auto-saves pages that contain an article, so you don’t have to worry about it saving your sensitive data.
If you want, you can configure it to auto-save every webpage. If you are feeling paranoid, you can disable auto-save entirely. You can also exclude websites that you never want to auto-save.
You can use it as a read-it-later app, but I mostly use it as a search app.
For privacy reasons, History Book stores your browsing history in iCloud.… View full description on the official store →
App Specs
🔐 Own this app? Claim & verify MRR →💾 3 MB🔞 4+📱 iOS 15.0+🔖 v1.1.3🔄 updated 0d ago🌐 EN📂 Productivity💰 Paid
📅
What Worked™ · Development Pipeline
6 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 →
2026-04
📈
Crossed 10 ratings — social-proof flywheel kicking in
2026-04
💲
Went paid — introduced $6.99 price point
2023-02
⭐
Rating ↑ 3.67 → 4.00 (improved 0.33★)
2022-06
⭐
Rating ↑ 3.00 → 3.67 (improved 0.67★)
2022-06
🚀
First tracked snapshot — initial data captured
2022-06
⭐
Rating ↑ 1.00 → 3.00 (improved 2.00★)
🔔
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📝 Description
95
BU Score · Transcendent
More by And a Dinosaur
View all →📦 Portfolio summaryINDIE studio
8apps·$42K/mocombined
Lead-app heavy — top app contributes 54%
Similar apps in Productivity
About this analysis
Why low confidence: only 14 ratings · no founder-verified revenue (model estimate only) · revenue figure is directional only.
📌 Final verdict — read this before you trust the numbers above
History Book - Browse & Search is a early-stage iOS app in the productivity space with weak public traction — only 14 ratings, no founder-verified MRR, and not ranked in any monitored grossing chart. The app appears to be monetised, but public signals are too sparse for a precise revenue estimate.
Bottom line: treat all revenue, audience and acquisition-value numbers on this page as directional only — not founder-verified facts.
❓ Frequently Asked Questions
4 answers · auto-generated from this app's public dataHow much does History Book - Browse & Search make per month?▴
Our model estimates History Book - Browse & Search earns roughly $143/mo, but with only 14 ratings the confidence interval is wide. No founder-verified MRR is available for this app, so this is a model output calibrated against comparable apps in the same category. See methodology for the formula.
What apps are like History Book - Browse & Search?▴
Browse the full Productivity 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.
Who makes History Book - Browse & Search?▴
History Book - Browse & Search is published by And a Dinosaur on the Apple App 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 History Book - Browse & Search's BU Score?▴
History Book - Browse & Search has a BU Score of 49/100 (Emerging). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.