Comparison

Extract Numbers and SUM vs Thread Mark

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Extract Numbers and SUM

Features
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Extract the numbers from the string and add them up This app does not have OCR function. When reading characters with OCR The google app, google lens (google app) is convenient. example milk 200γ€€γ€€β†’ 200 fish 1,000 β†’ 1000 Bread 500 β†’ 500 1+2+3 β†’ 6 β€»Calculation for formulas

About

Thread Mark

Features
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Welcome to ThreadMark, the ultimate local-first Markdown reader that transforms your personal notes, development logs, and reading materials into an immersive, thread-style reading experience! Whether you're organizing a massive "Second Brain" or simply jotting down grocery lists, ThreadMark makes reading long documents on mobile incredibly fast, casual, and stress-free. β–  What is ThreadMark? ThreadMark is a unique Markdown viewer and editor that parses your local files into a message board/forum structure. Simply select your local folder (Vault), and the app automatically treats your folders as "Boards", your .md files as "Threads", and paragraphs divided by headings as numbered "Posts". β–  Who is this for? - Heavy Markdown users looking for a lightweight, mobile-friendly way to browse their vast knowledge base. - Users of desktop-based PKM (Personal Knowledge Management) tools who want a seamless, local mobile companion. - Anyone who loves the scrollable, bite-sized reading experience of timelines and forum threads. - Privacy advocates who prefer 100% offline, local storage without cloud lock-in. β–  Key Features - Innovative Thread-Style UI Documents are automatically split based on headings (e.g., ##) and displayed as numbered posts. Even a 10,000-word document becomes as easy to digest as scrolling through a social media feed. - Rich Markdown Compatibility Fully supports WikiLinks ([[Note Name]]) for bidirectional linking. Tap a dead link to instantly create a new thread. It also beautifully renders inline images, transclusions (embedding other .md files), and callouts (e.g., > [!info]). - Powerful "Quote Anchors" Navigate complex thoughts instantly. Type >>1, >>1-5, or >>1,3 to create interactive anchors. Tapping them opens a quick pop-up preview of the referenced sections without losing your scroll position. - 100% Local & Secure No accounts, no logins, and no forced cloud syncing. All data remains safely on your device's local storage, ensuring your private diaries and sensitive technical notes stay truly private. β–  Rich Customization - Dual Viewing Modes Switch seamlessly between the immersive "BBS Mode" (Board/Thread/Post layout) and the traditional "Standard Mode" (Folder/Note layout) depending on your mood. - Beautiful Themes & Typography Choose from a variety of carefully crafted themes, including a classic Retro Beige, pure Dark Mode, Dracula, and Cyberpunk. Includes a precise font scaler to build your perfect reading environment. * Note: ThreadMark is free to use with optional ads. We offer a one-time lifetime purchase to remove ads completely, or you can temporarily hide ads for 6 hours by watching a short video. * Note: This app is a local file viewer/editor. It does not connect to or browse external internet forum services.

Screenshots

Extract Numbers and SUM1 screens
Thread Mark4 screens

Verdict

The call

The clearest difference is in-app purchases: Extract Numbers and SUM at none against Thread Mark's 2. Thread Mark's advantage is update cadence (fortnightly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Thread Mark sells 2 one-off in-app purchases. Extract Numbers and SUM asks for nothing beyond the download.

UpkeepUpdate frequency

Extract Numbers and SUM ships an update every 4 months, Thread Mark fortnightly. The most recent releases landed on October 25, 2026 and October 3, 2026 respectively.

Scorecard2 real differences Β· 4 level
Extract Numbers and SUM versus Thread Mark: the parameters behind the verdict, then further details
ParameterExtract Numbers and SUMThread Mark
PriceFreeFree
Update frequencyEvery 4 monthsFortnightly β€” better
AdsYesYes
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details β€” not scored
Size22 MB49 MB
Age rating4+4+
Developerikeda tomokiKoya Kurauchi

In-app purchases

None

Extract Numbers and SUM

No in-app purchases

2 purchases

Thread Mark

One-time2
  • Buy the Developer a Coffee$2.99
  • ThreadMark Pro$9.99

Questions

Is Extract Numbers and SUM free?
Extract Numbers and SUM is free to download, with no in-app purchases.
Is Thread Mark free?
Thread Mark is free to download, with in-app purchases available.
Do Extract Numbers and SUM or Thread Mark have ads?
Both Extract Numbers and SUM and Thread Mark show ads.
Which is updated more often, Extract Numbers and SUM or Thread Mark?
Extract Numbers and SUM ships an update every 4 months, and Thread Mark fortnightly. Most recently, Extract Numbers and SUM was updated on October 25, 2026 and Thread Mark on October 3, 2026.

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