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Projelli vs Heyday (and Rewind).

Different jobs, side by side

This is the most "different category" comparison on the site. Heyday and Rewind aren't competitors to Projelli the way Notion AI or Reflect are. They're complements. The honest framing:

• Heyday / Rewind: "Capture everything I look at, let me ask AI questions about it later." Passive recording.
• Projelli: "Help me intentionally write down strategic things and keep them as files." Active intentional output.

If you want both passive memory and intentional artifacts, run both. They don't conflict.

The TL;DR table

Feature	Heyday / Rewind	Projelli
Capture mode	Passive (records screen / browsing / mic)	Active (you write, AI assists)
Output	Searchable index of past activity	Markdown files of intentional content
Where data lives	Local on your machine (both Heyday and Rewind are local-first)	Local on your machine (Markdown files)
Pricing	Heyday: $29/mo. Rewind: $20/mo or $480 lifetime	$49 once + your AI provider's API costs
Storage requirement	10-50 GB+ for screen recordings	Few MB to few GB depending on archive
Privacy posture	Local index of everything you see	Local files of what you intentionally wrote
AI providers	Built-in	BYOK Claude / OpenAI / Gemini / Ollama
Founder workflow templates	No	15 specific templates
Mobile	Limited	Desktop only
Best for	"I can't remember when I read that" recall	"I want to build a strategic archive"

When you want Heyday / Rewind

The killer use case for these tools is "I read something three weeks ago and can't remember which tab it was in." With passive screen-and-browser indexing, you can ask "what was that article about pricing strategy I read in March?" and it surfaces. For knowledge workers who consume a high volume of content and need recall, this is genuinely useful.

Specific scenarios:

• Recall what was on screen during a meeting last month
• Find the email where someone mentioned a specific decision
• Surface the article you skimmed and forgot about
• Build a "what did I do this week" summary from passive recording

When you want Projelli

The killer use case for Projelli is "I want to think out loud about a hard strategic problem and have the conversation become a real document I can find later." Active, intentional, output-shaped.

Specific scenarios:

• Draft a pitch deck with structured AI assistance
• Synthesize customer interviews into personas
• Run a weekly review with the same template every week
• Build a financial projection model
• Have a long strategic conversation about pricing and have it save as a file

Privacy comparison

Both are privacy-leaning by architecture (local-first, no cloud account required for core function). The differences:

• Heyday / Rewind capture a much larger surface area of your activity. The index includes things you browsed, things on screen during meetings, voice transcripts. The local-first architecture means none of this is uploaded, but the local index is wide-ranging.
• Projelli only captures what you intentionally write. The archive is what you typed; nothing more.

If you're comfortable with passive recording (and have the storage), Heyday / Rewind's privacy posture is fine. If you'd rather only archive what you intentionally produce, Projelli's surface area is smaller.

Running both

Many founders use both, and they don't fight each other.

• Use Heyday or Rewind for passive recall ("when did I last see that customer's email?")
• Use Projelli for intentional production ("draft my Q2 pitch deck")
• The data sets are entirely separate (Heyday's index of screen activity, Projelli's folder of Markdown files)

The combined cost for both is around $30-50/month plus Projelli's one-time $49. For most founders this is reasonable; for budget-constrained founders, pick one based on whether you value passive recall or intentional output more.

The honest answer for who shouldn't use either

If you're not actively producing strategic content (pitch decks, customer research, financial models, weekly reviews), Projelli won't earn its keep. Use Apple Notes or a plain folder of text files instead.

If you're not regularly losing track of things you saw on screen, Heyday and Rewind are overkill. The 10-50 GB of storage and the privacy surface area aren't worth it for someone who just wants normal note-taking.