Comparison

Clink vs Central Doc Scanner

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

Head to head
About

Clink

This keyboard app offers extensive customization for appearance, layout, and typing experience. Enjoy unique visual themes, adjustable layouts, advanced swipe typing, and offline autocorrect. It also includes helpful tools like cursor control and a clipboard history.

Highlights
  • Liquid Glass visual theme
  • Extensive theme editor
  • Multiple keyboard layouts
  • Split keyboard option
  • Advanced swipe typing
  • Offline autocorrect and predictions
  • Cursor control via spacebar
Features
Read full description

Clink is a custom keyboard for iPhone and iPad. Choose how it looks, arrange the keys, change the sounds and keep useful tools close to where you type. Start with a preset you like, or make a keyboard of your own. Choose a simple theme, metal keys, raised 3D keycaps or translucent Liquid Glass. Change colours, fonts, gradients, outlines and key shapes. Set separate themes for Light and Dark Mode. The live preview lets you type while you make changes. Add a photo background or put artwork on individual keys, with framing controls to get the placement right. Canvas mode lets you edit each key. Export your theme to share it, or import one someone else has made. Choose QWERTY, AZERTY, QWERTZ, Dvorak or a layout for your language. Try Clink Flow for two thumbs. Add a number row, use a split keyboard or switch to one-handed mode. Adjust height, width and spacing, and add custom keys and rows for text or functions. Tap or swipe to type. Two-thumb word composition lets either hand continue the same word, combining taps and glides. Keep a simple swipe trail or choose one with colour, sparks or a comet tail. Autocomplete, autocorrect and swipe decoding work on your device, without an internet connection. Clink can learn your words and the corrections you reject; learning can be switched off or reset. Text replacements, smart punctuation and automatic capitals help with everyday typing. Use combined suggestions for multiple languages or keep them separate. Clink includes Japanese kana, Chinese Pinyin and Korean input, with language packs available to download. Features depend on the language and installed resources. Slide on the spacebar to move the cursor, or use trackpad mode for more control. Adjust sensitivity and activation timing to suit your hands. Predictive flick lets you accept suggestions directly from the keys. Clipboard history keeps saved clips in groups. The notepad holds text you want to use again, and the calculator handles quick sums and conversions. Find emoji with search, recent choices and skin tones. Arrange the panels around what you use. Use dictation when you would rather speak, handwriting to write with your finger, or translation to prepare text in another language. Supported translation works offline after its resources are downloaded. Dictation may use Apple's speech services. On compatible devices, writing tools use Apple's on-device models to proofread, rewrite, shorten, expand or summarise text. Change the tone or prepare a reply, then review it before use. Apple Intelligence support and downloaded models are required. Choose a system click or sound pack, set the volume and tune the haptics. Adjust how keys move and respond. Add lighting, stickers or a small pet that reacts as you type. Save setups as profiles and switch between them from the keyboard. Optional iCloud sync carries profiles and custom themes between devices. Text clipboard history and learned vocabulary sync are separate choices, both off by default. Build custom actions for repeated tasks or write a panel using the built-in Python subset. Add compatible theme, layout, font and sound packs to extend your setup. No Clink account, ads or cross-app tracking. Ordinary typing does not send your text to a server. Core typing works without Full Access; clipboard access, haptics, custom sounds and shared settings use that permission. Downloads, purchases, iCloud and some speech features need a connection. Requires iOS 17 or later. Liquid Glass, translation and Apple Intelligence features depend on your iOS version, device, language and available resources. Setup walks you through adding Clink in iOS Settings. Switch to it with the globe key wherever custom keyboards are supported. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Central Doc Scanner

Features
Read full description

Transform your physical documents into pristine, high-resolution PDFs instantly and securely. Central Document Scanner brings enterprise-grade scanning pipeline directly to your local silicon processor, executing edge detection, angle rectification, and legibility enhancement 100% offline. No account creation. No background cloud uploads. No telemetry tracking. Just raw utility engineered for complete user data sovereignty. --- THE SECURE EDGE EXTRACTION ENGINE --- Unlike traditional scanning apps that route your private camera feeds and confidential text through remote third-party databases, Central Document Scanner processes your hardware camera layers strictly inside volatile memory parameters on your iPhone. Your visual data remains entirely within your local sandbox environment. --- CORE ARCHITECTURAL FEATURES --- • Automatic Boundary Extraction: The native edge-isolation framework locks onto document borders, eliminating messy desk backgrounds or table edges instantly. • Geometric Perspective Warping: Captured a document from an awkward angle? The engine instantly deskews and recalculates layout grids into a perfectly flat, square, professional alignment. • Monochromatic Enhanced Contrast: Advanced binarization transforms low-light, shadowed photo data into crisp, highly readable white-and-black document profiles, optimizing files for professional archiving and print-ready results. • Local Workspace Directories: Manage, append, rename, and stack scanned pages effortlessly into distinct multi-page digital books without an active network connection. • Sovereign Sharing Architecture: Compile and export your finished work instantly via standard native iOS share modules as clean PDF document chains or flat JPEG sequences. --- WHY CENTRAL ONLINE TOOLS? --- Central Document Scanner forms part of the independent Central Online Tools ecosystem—a structural framework built on single-purpose utility tools with clear privacy standards. By utilizing zero tracking SDKs and operating entirely independent of the internet, we eliminate tracking mechanisms entirely. Keep your paperwork private, your filesystem organized, and your device memory clean. Download Central Document Scanner today.

Screenshots

Clink4 screens
Central Doc Scanner3 screens

Verdict

The call

The clearest difference is in-app purchases: Central Doc Scanner at none against Clink's 3. On price, ads, device support and iOS requirement 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. Clink sells 3 in-app purchases, starting at $0.99 per month. Central Doc Scanner asks for nothing beyond the download.

Scorecard1 real difference · 9 level
Clink versus Central Doc Scanner: the parameters behind the verdict, then further details
ParameterClinkCentral Doc Scanner
PriceFreeFree
Rating3.9 (42 ratings) — better—
Positive reviews73.3% of reviews—
Number of ratings42 — better—
Update frequencyEvery 3 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.6
Further details — not scored
Size349 MB4 MB
Age rating4+4+
DeveloperWilliam WhitehouseAarush Singh

In-app purchases

3 purchases

Clink

Subscriptions2
  • Clink Monthly7 Days trial$0.991 Month
  • Clink Yearly7 Days trial$9.991 Year
One-time1
  • Clink Lifetime$14.99
None

Central Doc Scanner

No in-app purchases

Questions

Is Clink free?
Clink is free to download, with in-app purchases available.
Is Central Doc Scanner free?
Central Doc Scanner is free to download, with no in-app purchases.
Do Clink or Central Doc Scanner have ads?
Neither Clink nor Central Doc Scanner shows ads.

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