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Perry the Prompter vs memsync

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Perry the Prompter compared with memsync
DetailPerry the Prompter logo Perry the Promptermemsync logo memsync
What it doesHelp your AI understand you. One set of memories across every machine you work on
StageNot given Not given
FoundedNot given Not given
Based inDE US
Pricing modelFreemium Freemium
PricingFree: €0 (5 improvements a week, 2 question rounds a week, access to all seven chat apps, no account needed). Pro, monthly: €4.99/month or €59.88/year (unlimited improvements, more thorough model, history and prompt library, profile synced across computers). Students: 30% discount (€3.49/month bille Mac app free with no account on one machine; $15 per month to sync every machine with 14 days free trial; iPhone app $7.99 once.
Key features
  • Rewrites rough prompts into clear, structured versions
  • Works across seven AI chat apps
  • Personalized profile for tone and detail preferences
  • Leaves blanks instead of guessing missing details
  • Prompt history and library for Pro users
  • Profile syncs across multiple computers
  • Session capture from Claude Code, Codex and Cursor on Mac and Linux
  • Full-text search over all memories by project, kind and machine
  • MCP tools in every session for search, recent, status and machines
  • Search from any browser at mem.i8l.tech
  • Local viewer on 127.0.0.1 answering from hub or local mirror
  • Project exclude list kept locally to prevent capture
  • Export everything as SQLite file with one-click deletion
  • One token per machine, revocable without affecting other machines
  • Sync every 15 minutes using content identity
What makes it different
  • Works with seven AI chat apps at once, not just ChatGPT
  • Runs on paid-tier Google Gemini, which does not train on prompts
  • Built in Germany with GDPR privacy from the start
  • Free plan with no account required to start
  • Content identity ensures the same memory from multiple machines lands once safely
  • Free on one Mac with no account or setup required
  • Memories retained 30 days after subscription ends for export
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)2 +2 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)30
Citation Flow (Majestic)130
Referring domains (Majestic)10

6 details filled in for both companies.

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