Comparison

Copin Text Stock Notes vs Prompt Planter

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

Head to head
About

Copin Text Stock Notes

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Copy, come back to Copin, and you're done. Copin saves what you copied as a card, so it's waiting when you come back. β€’ Copy, come back to Copin, and it's saved automatically β€’ Cleans up the extra spacing in AI responses β€’ Read long answers one block at a time β€’ Sort cards into boxes so nothing piles up β€’ Copy All and paste into another AI or notes app β€’ Undo deletes and moves With Pro β€’ Rip mode: pull the triangle at the seam to split a card in two β€’ Unlimited cards, blocks and boxes β€’ Search and backup Great for AI chat logs, saved prompts and reusable snippets.

About

Prompt Planter

Features
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Write, test, and grow your prompts. Track versions of your AI prompts with diff view, version restore, and {{template}} variables - now synced across iPhone, iPad, and Mac. Prompt Planter is a calm, private home for the AI prompts you actually want to keep. If you reuse the same prompts across different AI assistants, you know the pain: the good version is buried somewhere in a chat history, and you end up rewriting it from scratch. Prompt Planter lets you save your best prompts, improve them over time, and grab the right one in seconds. THE SAME LIBRARY ON EVERY DEVICE - Syncs automatically over iCloud. Start a draft on your iPhone and finish it on your iPad or Mac. - Nothing to set up. If you are signed in to iCloud, everything is already there when you open the app. - You can check the sync status any time in Settings. GROW YOUR PROMPTS - Keep prompts, project instructions, skills, CLAUDE.md files, and system prompts in one library. - Every prompt has a full version history. Save a new version whenever you tweak it, with a short note on what changed. - See exactly what changed between versions, highlighted with + and - marks. - Restore any past version at any time. Restoring adds a new revision, so your history is never lost. - Rate each version and record how it actually performed, so you always know which one works best. ONE PROMPT, TUNED FOR EVERY AI - Create variants of the same prompt for different models. - Tag prompts by AI and by purpose so you can find exactly what you need. Give AI tags a color to tell them apart at a glance. - Duplicate a whole prompt, version history included, when you want to take it in a different direction. CAPTURE IDEAS FAST - Jot a quick draft, then save it to your library as a new prompt, a new version, or a new variant. - One-tap copy to the clipboard, ready to paste into any chat. - Write {{name}} in a prompt body and a fill-in form appears when you copy it or send it to Drafts. FIND WHAT YOU ARE LOOKING FOR - Pin your go-to prompts to the top. - Mark favorites and filter by kind, AI, or purpose. - Search covers change notes and result notes too, not just the prompt body, so you can find that one insight you wrote down. - Your sort order and filters are remembered between launches. YOUR DATA STAYS YOURS - No account, no sign-in, no ads, no tracking. - Sync uses your own iCloud private database. The developer cannot see its contents. - Not using iCloud? Everything stays on your device and every feature still works. - Export and import your whole library as a JSON file for backup or moving between devices. FULLY BILINGUAL - Use the app in English or Japanese, switchable anytime. Prompt Planter is designed to be quiet, fast, and out of your way, so your prompts can grow alongside your work.

Screenshots

Copin Text Stock Notes4 screens
Prompt Planter4 screens

Verdict

The call

The clearest difference is in-app purchases: Prompt Planter at none against Copin Text Stock Notes's 1. Copin Text Stock Notes's advantage is update cadence (weekly vs monthly) and iOS requirement (17.0 vs 26.0). On price, ads 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. Copin Text Stock Notes sells 1 one-off in-app purchase. Prompt Planter asks for nothing beyond the download.

UpkeepUpdate frequency

Copin Text Stock Notes ships an update weekly, Prompt Planter monthly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

Scorecard3 real differences Β· 3 level
Copin Text Stock Notes versus Prompt Planter: the parameters behind the verdict, then further details
ParameterCopin Text Stock NotesPrompt Planter
PriceFreeFree
Update frequencyWeekly β€” betterMonthly
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPad, Mac β€” betteriPhone, iPad
Requires iOS17.0 β€” better26.0
Further details β€” not scored
Size3 MB3 MB
Age rating4+4+
DeveloperEri TakemiyaYusuke Nakashima

In-app purchases

1 purchases

Copin Text Stock Notes

One-time1
  • Copin Pro (One-time Purchase)$4.99
None

Prompt Planter

No in-app purchases

Questions

Is Copin Text Stock Notes free?
Copin Text Stock Notes is free to download, with in-app purchases available.
Is Prompt Planter free?
Prompt Planter is free to download, with no in-app purchases.
Do Copin Text Stock Notes or Prompt Planter have ads?
Neither Copin Text Stock Notes nor Prompt Planter shows ads.
Which is updated more often, Copin Text Stock Notes or Prompt Planter?
Copin Text Stock Notes ships an update weekly, and Prompt Planter monthly. Most recently, Copin Text Stock Notes was updated on October 28, 2026 and Prompt Planter on October 25, 2026.

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