📊 29K iOS Apps Tracked Updated 1 min ago ⚡ Revenue Forecasts
Create Account 🔑 Sign In
Home ⚡ Optimize
65
BU Score
Solid

Kilonotes-Notes & Mark up PDF

4.6 ✍️ Editor
✍️ BU Analytics Review

Kilonotes-Notes & Mark up PDF is an iOS app from Hefei T-Stack Information Technology Co., Ltd. in the Productivity category, currently rated 4.6★ across 4,840 ratings. Initial signal reads as largely positive sentiment, users highlighting consistency and feature depth.

Our BU Score puts it at 65Solid (established niche player). For a Productivity app, that means established niche player.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

📊 Performance Tracking LIVE

Loading…
idle
0%
Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
0
since first record
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 11 of 11 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Excellent rating (4.6★)METRIC
+$2,200
bugsREVIEW
−$1,800
5 starREVIEW
+$1,800
Low install base (4,840 ratings)METRIC
+$1,500
Multilingual (22 languages)METRIC
+$1,500
highly recommendREVIEW
+$1,400
slowREVIEW
−$1,200
annoying adsREVIEW
−$1,100
too expensiveREVIEW
−$1,000
Established app (5y old)METRIC
+$800
Ad-supported / freemiumMETRIC
+$600
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Apr 25
May 25
Jun 25
Jul 25
Aug 25
Sep 25
Oct 25
Nov 25
Dec 25
Jan 26
Feb 26
Mar 26

⭐ 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.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 471 MB🔞 4+📱 iOS 15.6+🔖 v3.39.1🔄 updated 2w ago🌐 AR, CS, NL, EN, FR +17📂 Productivity💰 Free🚀 Launched 2020 (5y old)

📝 About this app

We sincerely invite you to join us in exploring more efficient ways of taking notes and jointly reshape the modern learning mode. As a companion exploring new ways of taking notes, Kilonotes can meet your various needs. Whether it is recording class notes, annotating PDFs, doing test exercises, studying online courses, or organizing reading notes, Kilonotes will be your reliable study partner. Let's take good notes together.

[Breakthrough the limitations of paper]
·Handwriting can be moved, scaled and rotated freely
・You can undo what you entered
·The size of the eraser can be adjusted to control the erasing range
·Scale paper function to make writing more comfortable
You can insert pictures or photos, and combine text and pictures to deepen memory
· Quick browsing function to help you quickly find what you need
· Unlimited creation of paper, providing endless memory space
·Recording function, allowing you to take notes while listening to lectures
·Card function, create an exclusive knowledge base, you can create your card through pictures, brushes, and typing
OCR function, convenient and fast text extraction
A variety of fun-but-practical Journaling templates

[Optimized reading experience]
·Global PDF search, quickly find what you need in the database
· Outline function, convenient and fast positioning
Multiple reading modes: eye protection, dark color, vision protection
· Quick jump function, enter the page number to quickly navigate
·Translation function to help foreign language literature reading
·Extraction function, easy to collect important information
·PDF extension function, make reading and writing more free

[Beyond the limits of the brush]
· Change brush color, create custom colors, or pick any color with the eyedropper
·Adjustable brush width to adapt to various scenes
·Graffiti pen function, make notes more colorful

[Custom Notebook]
·Provide many unique and beautiful covers for you to choose
·A variety of paper templates are available: blank paper, dot matrix paper, graph paper, to meet your needs
·You can import PDF and record freely in your own notebook

[AI Assistant]
• Built-in high-efficiency AI assistant helps you organize notes, expand knowledge points, and double your learning and work efficiency.
• Exclusive AI problem-solving function supports selecting questions and sending them with one click, helping you easily overcome learning difficulties.

[About subscription]
Users can subscribe to the monthly subscription service of kilonotes to unlock advanced content, including custom time planning books.
The subscription will be automatically renewed. If the user needs to cancel the subscription, the renewal needs to be closed 24 hours before the end of the current cycle.
Users can close and cancel subscriptions and trials in their iTunes account.

Contact us: feedback@top-stack.com
Privacy Policy: https://www.top-stack.com/page/ios_en_privacy.html
User agreement: https://www.top-stack.com/page/Kilonotes_Terms_of_use_En.html

Profile & Insights

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

Identification

App name
Kilonotes-Notes & Mark up PDF
Developer
Hefei T-Stack Information Technology Co., Ltd.
Bundle ID
com.topstack.HandNote
App Store URL
Open in App Store
Category
Productivity
Content rating
4+
Languages
AR, CS, NL, EN, FR, DE, EL, ID, IT, JA, KO, MS, PL, PT, RU, ZH, ES, TH, ZH, TR, UK, VI

Company

Website
Not found
Tagline
Not found
Description
Not found
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
Not found

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$256/mo
Top-grossing rank
Outside top 100 in US Productivity
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
Not found
Phone
Not found
Contact page
Not found
About page
Not found
📈Ratings growth4,840 ratings+73% lifetimeShow 3-year history estimate ▾May 2023Jan 2026May 2026
Tracked (50 weeks) Pre-tracking estimate (35 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.
BU Analytics
Browse BU Analytics
📚 All 55,000+ Books 🜍 Alchemy & Hermeticism 🔮 Magic & Ritual 🌙 Witchcraft & Paganism Astrology & Cosmology 🃏 Divination & Tarot 📜 Productivity ✡️ Kabbalah & Jewish Mysticism 🕉️ Mysticism & Contemplation 🕊️ Theosophy & Anthroposophy 🏛️ Freemasonry & Secret Societies 👻 Spiritualism & Afterlife 📖 Sacred Texts & Gnosticism 👁️ Supernatural & Occult Fiction 🧘 Spiritual Development 📚 Esoteric History & Biography
BU Analytics
📑 Collections 📤 Upload Your Book
Account
🔑 Sign In Create Account
Info
About BU Analytics