Comparison

ClipStackX vs K.ai

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

Head to head
About

ClipStackX

Features
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Save, manage, and instantly access your clipboard history with ClipStackX. Never lose important copied text again – pin, search, and create quick memos for easy access. Key Features ・Clipboard History Manager – Keep track of everything you copy. ・Pin Important Items – Save frequently used text for quick access. ・Quick Memo – Write instant notes and copy them anytime. ・Tagging & Search – Organize and find items faster. ・Quick Actions – Copy, share, or use with one tap. ・Privacy First – 100% local storage, no data sent online. ClipStackX is the ultimate clipboard manager & quick memo tool for productivity. Terms of Use: https://mysterylog.com/apps/clipstackx/terms.html Privacy Policy: https://mysterylog.com/apps/clipstackx/privacy.html

About

K.ai

Features
Read full description

Kai is a private AI that does things for you. It searches the web, reads your calendar, saves notes and adds events after your Allow. It talks with you, interprets between two languages, reads your documents and photos, makes pictures, and runs commands in a small sandbox on your phone. There is no sign-up and no subscription. ERRANDS, DONE FOR YOU Give Kai a job in plain words, like "find three dentists open on Saturday and save the best one in a note". Kai searches, reads each page, compares what it finds and brings back the result. You see every step, what each step cost and the limit you set. TALK TO KAI Tap the voice button and talk without your hands. Kai answers out loud and stops to listen when you speak. Turn on the interpreter, choose two languages, and Kai interprets both ways while you talk. Choose from eight voices. SEE AND READ Attach PDFs, photos, Word files and spreadsheets to one ask, and Kai reads them together. Point your camera with Kai Lens and ask what you see: a menu, a plant, a label or a math problem. Share a web page to Kai and it reads the page to you. MAKE PICTURES Describe a picture and Kai draws it. Give Kai a photo and say what to change, and Kai changes it. Save the result to Photos or share it. MEMORY AND SKILLS Tap Keep on an answer and Kai keeps it as a note in Memory. Your notes are plain files that you can read and edit. Skills teach Kai new errands: eight come with Kai, and you can add more as folders. YOUR CALENDAR AND NOTES Kai reads your calendar and reminders to plan your week and find clashes. It adds events and reminders, and changes or deletes an event, only after you tap Allow. A note that an errand saves waits for your Allow too. FROM YOUR MAC Install K.ai Link on your Mac, and Kai can answer from the files in the folders you choose. The connection is encrypted, and only the passages that answer your question leave the Mac. PRIVATE BY DESIGN There is no account to make. Your phone makes an anonymous key, and the key is your account. Our servers keep no logs of your conversations. Your phone can remove personal details from a document before it sends it, and your history stays on your phone for seven days. One tap clears everything. HONEST PRICING You get $5 of credit to start. Most answers cost about one cent, and every answer shows its price. There is no subscription: buy prepaid credit only when you want more, and set a limit for each errand. SMART, BUT STILL LEARNING Kai can make mistakes, so check its work. Kai shows every step and what it cost, so you can see how it got there. Nothing changes on your calendar, reminders or notes until you tap Allow. Ask Kai from Siri, Shortcuts or the Action button. Use Kai on iPhone, iPad, Mac with one key and one balance.

Screenshots

ClipStackX3 screens
K.ai4 screens

Verdict

The call

The clearest difference is ads: K.ai at none against ClipStackX's shown. ClipStackX's advantage is update cadence (every 3 days vs weekly) and iOS requirement (15.0 vs 17.0). On price, in-app purchases and device support 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. ClipStackX sells 1 in-app purchase, starting at $0.99 per month and K.ai sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ClipStackX ships an update every 3 days, K.ai weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard3 real differences Β· 3 level
ClipStackX versus K.ai: the parameters behind the verdict, then further details
ParameterClipStackXK.ai
PriceFreeFree
Update frequencyEvery 3 days β€” betterWeekly
AdsYesNo β€” better
In-app purchasesYesYes
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS15.0 β€” better17.0
Further details β€” not scored
Size46 MB56 MB
Age rating4+4+
DeveloperSatoshi YokokawaNull Research LLC

In-app purchases

1 purchases

ClipStackX

Subscriptions1
  • Premium Monthly$0.991 Month
3 purchases

K.ai

One-time3
  • Small Credit Pack$9.99
  • Medium Credit Pack$24.99
  • Large Credit Pack$49.99

Questions

Is ClipStackX free?
ClipStackX is free to download, with in-app purchases available.
Is K.ai free?
K.ai is free to download, with in-app purchases available.
Do ClipStackX or K.ai have ads?
ClipStackX shows ads; K.ai does not.
Which is updated more often, ClipStackX or K.ai?
ClipStackX ships an update every 3 days, and K.ai weekly. Most recently, ClipStackX was updated on October 30, 2026 and K.ai on October 31, 2026.

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