Comparison

WattTools vs Nota6

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

Head to head
About

WattTools

Features
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An audio, video, picture, GIF, document converter tool. 【Video】 1. Support MP4, AMV, AVI, MOV, MPG, M4V, MKV, WMV, FLV, MPEG, RM, VOB, TS, WEBM, ASF, 3GP, SWF, MXF, F4V, 3G2, OGV formats. 2. Support functions: format conversion, video audio extraction, video compression, video cropping, video merging, video speed changing, volume adjustment, and video noise reduction. 【Audio】 1. Support MP3, WAV, FLAC, M4A, AAC, OGG, AC3, AMR, OPUS, AIFF, MP2, GSM, DTS, AU, CAF, OGA, W64, VOC, SPX, IRCAM, WMA formats. 2. Support functions: format conversion, audio compression, audio cropping, audio merging, audio speed changing, volume adjustment, audio noise reduction, audio to text, text to audio. 【Image】 1. Support JPG, PNG, JPEG, WEBP, TGA, BMP, JP2, GIF, PXC, TIF, TIFF, PBM, PGM, EXR, PAM, PFM, RAS, SGI, SUN, XBM, XWD, YUV formats. 2. Support functions: format conversion, image compression, ID photo. 【GIF】 Support video to GIF. 【Document】 Supports converting images to PDF. More features will be added in the future. 【WattTools automatic renewal VIP service statement】 1. After the purchase is confirmed, your iTunes account will be charged and the subscription will be automatically renewed unless automatic renewal is turned off at least 24 hours before the end of the current subscription. Your account will be charged for renewal within the last 24 hours prior to the end of the current subscription, and the cost of the renewal will be determined. 2. If you need to cancel your subscription, please manually open "Settings" on your Apple phone --> Enter "iTunes Store and App Store" --> Click "Apple ID", select "View Apple ID", enter the "Account Settings" page, and click "Subscribe", select WattToolsVIP to cancel the subscription User Agreement:https://doc-hosting.flycricket.io/watttoolsterms/9af75cf3-424d-4c82-bc73-fc895bfd953a/terms Privacy Policy:https://doc-hosting.flycricket.io/watttools/83c8178a-3717-4dd6-8181-376aaa46900d/privacy

About

Nota6

Features
Read full description

Reader-first Markdown app for the AI era — with a built-in Reference Library so it's useful the moment you open it. BUILT-IN LIBRARY (12 references, all offline) The welcome screen has a "Browse Library" button. Tap it and you have 12 curated documents available immediately, in English and Simplified Chinese: • Markdown / GFM syntax references • Mermaid Diagram Gallery — 10 diagram types (flowchart, sequence, class, state, ER, gantt, pie, mindmap, timeline, git graph), each with source + rendered output • KaTeX Math Reference — symbols, operators, matrices, common formulas • Code Highlighting Gallery — Swift, Python, TypeScript, Go, Rust, SQL, and more (190+ languages bundled) • Reading AI-Generated Markdown — four shapes of agent output and how to read each • CLAUDE.md & AGENTS.md spec — how AI-instruction files work • README Patterns, Design Doc & RFC Patterns • Nota6 Tips & Tricks, iPad Keyboard Shortcuts, Themes Showcase These aren't placeholders — they're useful reading material for anyone who works with AI coding assistants and the .md files they produce. WHAT MAKES IT DIFFERENT FROM A BROWSER • Mermaid diagrams, KaTeX math, syntax-highlighted code, all rendered offline. No network requests during rendering. Safari Reader can't do Mermaid; Nota6 can. • Auto-refresh on file change with smart scroll anchoring: when an external editor rewrites the file, the preview re-renders in place and stays at the same heading even if the document length shifts. • Open files from anywhere via the system share sheet, Files, iCloud Drive, or the "Open in Nota6" action. iOS-NATIVE INTEGRATIONS • Shortcuts / App Intents: "Open Markdown File" and "Export Markdown as HTML" are first-class Shortcuts actions. Automate from Siri or your iPad keyboard. • iCloud sync: your theme, font, width, and Custom-theme colors follow you across iPhone, iPad, and Mac. • Workspace full-text search (⌘⇧F) across an entire folder of .md files. • Bookmark self-heal: if AI tooling renames or moves files in your workspace, Nota6 reattaches by content fingerprint instead of breaking. • Deep links: nota6://open?path=...&heading=... jumps to a specific heading. READING EXPERIENCE • Quick Edit: switch to Source, correct raw Markdown, and save with Command-S on a hardware keyboard. Nota6 preserves the original encoding, BOM, and line endings, and warns before overwriting external changes. • 5 themes: GitHub · Paper · Notion · Terminal · Custom. Custom lets you pick body + monospace fonts and 4 colors (background, text, heading, code block) right inside the app. • 4 font sizes, 3 reading widths, Light / Dark / Auto appearance. • Outline panel with live filter and scroll-synced active heading; floating breadcrumb when the outline is closed. • Per-file reading-progress dots in the workspace sidebar. • Click-to-zoom for Mermaid diagrams and images; long-press to Copy or Save as PNG. iPAD HARDWARE KEYBOARD Full shortcut set: ⌘O · ⇧⌘O · ⌘F · ⌘P · ⌥⌘O · ⌘R · ⌘[ / ⌘] · ⌘W. Press-and-hold ⌘ for the discoverability HUD. EXPORT PDF or self-contained HTML via the system share sheet — straight to Files, Mail, Slack, Notion, or any other destination. PRIVACY No analytics. No third-party SDKs. No network requests unless the document itself references remote images. Rendering libraries (KaTeX, Mermaid, highlight.js) are bundled offline. English + Simplified Chinese.

Screenshots

WattTools2 screens
Nota64 screens

Verdict

The call

The clearest difference is in-app purchases: Nota6 at none against WattTools's 2. Nota6 also leads on update cadence (every 2 days vs every 3 weeks). WattTools's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. WattTools sells 2 in-app purchases, starting at $0.99 per 7 days. Nota6 asks for nothing beyond the download.

UpkeepUpdate frequency

WattTools ships an update every 3 weeks, Nota6 every 2 days. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 3 level
WattTools versus Nota6: the parameters behind the verdict, then further details
ParameterWattToolsNota6
PriceFreeFree
Update frequencyEvery 3 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 — better17.0
Further details — not scored
Size101 MB11 MB
Age rating4+4+
Developer源 张笑天 刘

In-app purchases

2 purchases

WattTools

Subscriptions1
  • Weekly subscription$0.997 Days
One-time1
  • 3Credits$0.99
None

Nota6

No in-app purchases

Questions

Is WattTools free?
WattTools is free to download, with in-app purchases available.
Is Nota6 free?
Nota6 is free to download, with no in-app purchases.
Do WattTools or Nota6 have ads?
Neither WattTools nor Nota6 shows ads.
Which is updated more often, WattTools or Nota6?
WattTools ships an update every 3 weeks, and Nota6 every 2 days. Most recently, WattTools was updated on October 2, 2026 and Nota6 on October 7, 2026.

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