How much does 一生必學的英文字首字根字尾，正體中文版 make per month?

Low-confidence model estimate. 一生必學的英文字首字根字尾，正體中文版 has only 0 App Store ratings, so our revenue model has very little signal to work with — treat the ~$2.9K/mo figure as directional only, not a verified MRR. No founder-verified revenue data is available for this app. See methodology for the formula and confidence bands.

What apps are like 一生必學的英文字首字根字尾，正體中文版?

Browse the full Education 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 一生必學的英文字首字根字尾，正體中文版 built with?

Our heuristic places 一生必學的英文字首字根字尾，正體中文版 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 一生必學的英文字首字根字尾，正體中文版 still actively maintained?

Maintenance status: Likely abandoned (93% abandonment risk). Last shipped version was 4+ years ago. The risk score combines time-since-last-update with Editor's Choice / curated featuring + user-base maturity adjustments.

When was 一生必學的英文字首字根字尾，正體中文版 last updated?

一生必學的英文字首字根字尾，正體中文版 last shipped a new version on 2022-05-22 — more than 4 year(s) ago. This is the date Apple / Google last accepted a new build, not a content-only push.

Who makes 一生必學的英文字首字根字尾，正體中文版?

一生必學的英文字首字根字尾，正體中文版 is published by Otek International Inc. 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 一生必學的英文字首字根字尾，正體中文版's BU Score?

一生必學的英文字首字根字尾，正體中文版 has a BU Score of 5/100 (Niche). The score combines App Store rating, ratings count, monetization model and revenue signals calibrated against founder-verified MRR anchors. See the BU Score formula.

一生必學的英文字首字根字尾，正體中文版

Quality Score

Niche

一生必學的英文字首字根字尾，正體中文版

Name: 一生必學的英文字首字根字尾，正體中文版 — app revenue, audience, build cost & risk profile
Creator: Bumetric
License: https://creativecommons.org/licenses/by/4.0/
Keywords: 一生必學的英文字首字根字尾，正體中文版 revenue, 一生必學的英文字首字根字尾，正體中文版 app analytics, mobile app revenue estimate, Education revenue, Android app revenue

by Otek International Inc.

Low confidence

— Google Play rating

✍️ Bumetric analysis

“

一生必學的英文字首字根字尾，正體中文版 is an Android app from Otek International Inc. in the Education category, currently rated — across few ratings. Initial signal reads as no scraped reviews yet: judgment based on metadata only.

Quality Score is 5: Niche (micro-niche or pre-traction stage). For a Education app, that means micro-niche or pre-traction stage. 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

$2.9K

per month

→

12-mo forecast

$2.5K – $9.2K

per month

→

24-mo forecast

$2.4K – $21.2K

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

Run free AI audit →

Typical impact: +2-5× organic installs

📊 Performance Tracking LIVE

1 snapshots on record

idle

Rating

—

Reviews

0 reviews

Forecast Revenue / mo

$2.9K

Snapshots tracked

since May 2026

ONE-TIME · BUILD 💰 Estimated build cost

$155K

↳ What it cost to build · not monthly revenue

Likely range $115K – $210K

$25K · MVP floor $100K · indie scale $500K+ · studio build

📈 Pays back in ~4.4y 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
⚙ Education complexity ×1.20	+$10K
🌐 Cross-platform reach (iOS + Android)	+$33K
⚙ 10.4y maintenance × ~1-person team	+$62K

Total estimate $155K

ONE-TIME · EXIT VALUE 💵 Estimated acquisition value

$50K

↳ What it would sell for · not monthly revenue

Marketplace range $40K – $75K · 19× MRR multiple

💸 ~0.3× 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
📅 10.4y proven track record	+20%
🏷 Education category multiple	+6%

Final multiple 19× MRR

🛠 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	Education
📦 Compact Android bundle	→ Native Kotlin

💀 Maintenance status

Likely abandoned

93%

Last shipped 2022-05-22 · 1625 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

📅 4y+ since last update	Likely abandoned
• 10y old + 1y+ no update	+5% (API deprecation drift)

Verdict Likely abandoned

🔬

How we forecast this revenue

MEDIUM CONFIDENCE

Baseline

$2.9K/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

$2.5K – $5.8K

12 months

$2.5K – $9.2K

24 months

$2.4K – $21.2K

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 · 37/100INDIE TIERlimited signal

Growth Velocity

5.0

Founder Strength

6.0

Product Quality

0.0

Revenue Strength

3.5

Monetization Maturity

1.0

Defensibility

7.5

Market Position

0.0

Operational Safety

7.0

💰 Revenue: Modest — $1K - $7K/mo · INDIE tier · medium confidence, trajectory unclear.
⭐ Quality: None★ across 0 reviews — weak — significant quality concerns.
📍 Market: Not yet charting in any of the 9 monitored markets.
📈 Growth: ⚠ last update 1622d ago — possibly dormant.
⚠️ Risk: Moderate — dormant (1622d 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 = $52K-$93K.

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.

📥 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: 一生必學的英文字首字根字尾，正體中文版
Developer: Otek International Inc.
Bundle ID: com.otek.imprefixrootsuffixtch
App Store URL: Open in App Store
Category: Education
Content rating: Not found
Languages: Not found

Company

Website: www.transwhiz.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: $2.9K/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

一個一個字母背單字的時代已經過去，「土法煉鋼」永遠跟不上迅速成長的全球英語競爭力！ 現在換一招，勝過埋頭苦練找絕招。先摸清單字的底細，再破解、理解、一次記憶！

專為想背單字卻不得其門而入的學習者設計！不用抱著書死記、硬背，用全世界都在用的「單字拆解記憶法」，輕鬆將單字記起來！本 app 根據名師蔣志榆編著之「一生必學的英文字首字根字尾」一書製作而成，善用本書內容，讓您學習單字更有效率。

全球獨創「單字拆解樹狀圖」！

將單字依照「字源」做分類，再將組合拆解成字首、字根或字尾，獨創「樹狀圖」的結構作呈現，一目瞭然，輕鬆背記所有單字。搭配字首、字根、字尾詳細解說，深入瞭解單字組成，遇到任何單字都能輕鬆拆解，讓你舉一反三，事半功倍！

哈佛、牛津、劍橋、台大高材生都是用這招！

為什麼高材生學起英文總是一派輕鬆？教你如何見字拆字，先「拆解」後「理解」。輕鬆背記2,000、7,000甚至20,000單字！任何單字一看就會背！ 

一生受用的單字基礎記憶法

學單字最怕學一忘了二，只有最完整的學習內容，才能保證奠定最強基本功，全書每個單字搭配音標、例句、衍生單字、中文對照，穩紮穩打你的英文單字實力。，任何考試、不同年齡均適用，再搭配專業外籍英文名師錄製發音，是聽說讀寫一次克服的絕佳學習方案！

本 app 檔案超過 50M，須使用 wi-fi 才能下載。… View full description on the official store →

App Specs

🔐 Own this app? Claim & verify MRR →

🔖 v1.30🔄 updated 4y ago📂 Education💰 Free🚀 Launched 2016 (10y old)

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