How much does Zoo for Zotero make per month?

Based on our ML-calibrated revenue forecast, Zoo for Zotero earns approximately $500/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 Zoo for Zotero profitable?

With estimated build cost $115K and monthly revenue $500, Zoo for Zotero looks well below break-even — current monthly revenue is much smaller than the estimated build cost. Profitability also depends on paid-acquisition spend and refund rate which the public model doesn't see.

How many users does Zoo for Zotero have?

Estimated audience: ~47K lifetime downloads, ~3K monthly active users, and ~640 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 Zoo for Zotero?

Browse the full Books & Reference 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 Zoo for Zotero built with?

Our heuristic places Zoo for Zotero 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 Zoo for Zotero 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 Zoo for Zotero sell for?

Estimated acquisition value: $10K (marketplace range $5.0K – $10K). Calculated as 16× 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 Zoo for Zotero last updated?

Zoo for Zotero last shipped a new version on 2025-08-04 — more than 1 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.

Who makes Zoo for Zotero?

Zoo for Zotero is published by mickstarify 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 Zoo for Zotero's BU Score?

Zoo for Zotero has a BU Score of 57/100 (Solid). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.

Zoo for Zotero

Quality Score

Solid

Zoo for Zotero

Name: Zoo for Zotero — app revenue, audience, build cost & risk profile
Creator: Bumetric
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Zoo for Zotero revenue, Zoo for Zotero app analytics, mobile app revenue estimate, Books & Reference revenue, Android app revenue

by mickstarify

Medium confidence

4.3 Google Play rating

✍️ Bumetric analysis

“

Zoo for Zotero is an Android app from mickstarify in the Books & Reference category, currently rated 4.3★ across 620 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.

Quality Score is 57: Solid (established niche player). For a Books & Reference app, that means established niche player. 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

$500

per month

→

12-mo forecast

$437 – $1575

per month

→

24-mo forecast

$405 – $3644

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

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Typical impact: +2-5× organic installs

📊 Performance Tracking LIVE

1 snapshots on record

idle

Rating

4.3

Reviews

620 reviews

Forecast Revenue / mo

$500

Snapshots tracked

since Jun 2026

ONE-TIME · BUILD 💰 Estimated build cost

$115K

↳ What it cost to build · not monthly revenue

Likely range $85K – $155K

$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
⚙ Books & Reference complexity ×0.95	$-2525
🌐 Cross-platform reach (iOS + Android)	+$26K
⚙ 7.1y maintenance × ~1-person team	+$42K

Total estimate $115K

ONE-TIME · EXIT VALUE 💵 Estimated acquisition value

$10K

↳ What it would sell for · not monthly revenue

Marketplace range $5K – $10K · 16× MRR multiple

💸 ~0.1× 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
📅 7.1y proven track record	+20%
🏷 Books & Reference category multiple	-2%
⭐ Small user base (<1K ratings)	-8%

Final multiple 16× MRR

👥 Estimated audience size

47K

Lifetime downloads (US-equivalent)

Monthly active

3.2K

Daily active

640

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

📲 Books & Reference engagement	~110 installs / rating
📅 7.1y of rating accumulation	-30%
🔁 Books & Reference D30 retention	10%
📍 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	Books & Reference
📦 Compact Android bundle	→ Native Kotlin

💀 Maintenance status

Likely abandoned

72%

Last shipped 2025-08-04 · 431 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 2mo since last update

Likely deprioritized

Verdict Likely abandoned

🔬

How we forecast this revenue

LOW CONFIDENCE

Baseline

$500/mo · ML-estimated from 234 triggers

Growth rate

+6.0% MoM · INDIE tier baseline (compound monthly)

6 months

$426 – $993

12 months

$437 – $1.6K

24 months

$405 – $3.6K

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

Pre-traction · 39/100INDIE TIERlimited signal

Growth Velocity

5.0

Founder Strength

4.3

Product Quality

6.0

Revenue Strength

2.7

Monetization Maturity

1.0

Defensibility

5.3

Market Position

0.0

Operational Safety

7.0

💰 Revenue: Marginal — $200 - $1250/mo · INDIE tier · medium confidence, trajectory unclear.
⭐ Quality: 4.31★ across 620 reviews — solid.
📍 Market: Not yet charting in any of the 9 monitored markets.
📈 Growth: ⚠ last update 431d ago — possibly dormant.
⚠️ Risk: Moderate — dormant (431d 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 = $9K-$16K.

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

MODEL

Revenue 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:

5 starREVIEW		+$1,800
excellent appREVIEW		+$1,500
Good rating (4.3★)METRIC		+$800
Established app (7y old)METRIC		+$800
Ad-supported / freemiumMETRIC		+$600
Early-stage install base (620 ratings)METRIC		+$400

METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📥 Estimated Downloads / week

PROXY · ratings × 50/wk —

Industry-rule estimate (Sensor Tower / data.ai): one weekly install ≈ 50 new ratings. Solid points = tracked snapshots · faded line = pre-tracking model backfill.

📈 Reviews Growth

LIVE

Cumulative review count from first BU snapshot. Each point = a tracked update.

⭐ Rating Trend

LIVE

Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY

Each bar shows a tracked update and the metric delta from the previous snapshot.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name: Zoo for Zotero
Developer: mickstarify
Bundle ID: com.mickstarify.zooforzotero
App Store URL: Open in App Store
Category: Books & Reference
Content rating: Not found
Languages: Not found

Company

Website: github.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: $500/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

Zoo for Zotero is a free opensource program for viewing your Zotero Libraries!

It's reasonably fast and modern and supports collections, group libraries, webDAV, searching, annotation syncing for attachments, as well as other features.

Currently we only support using the official Zotero Account Syncing.

The app caches the library and only syncs changes so it should be friendly to large libraries! (after the initial sync of course)

I made this app as a hobby/passion project, and I would love it if you leave a review below!… View full description on the official store →

App Specs

🔐 Own this app? Claim & verify MRR →

🔖 v4.0.0🔄 updated 1y ago📂 Books & Reference💰 Free🚀 Launched 2019 (7y old)

🔔

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📝 Description

BU Score · Transcendent

Full revenue analysis

Read the article-style breakdown for Zoo for Zotero: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.

Read deep-dive →