Comparison

Prism Notes vs Eidra

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

Head to head
About

Prism Notes

Capture thoughts and links quickly with a familiar texting interface. Organize ideas with AI-suggested tags and develop them across linked threads. Review notes to keep what matters and easily search by keyword or meaning.

Highlights
  • Texting-like note capture
  • AI-suggested tags
  • Threaded idea development
  • Review mode for notes
  • Sync across devices
  • Natural language reminders
  • Lock screen capture
Features
Read full description

Prism is the private place for quick thoughts and links. It feels like texting, rather than writing in a document. Capture easily, organize with tags, develop ideas across threads, review to keep only what matters. Free to try! Features: - Private and on-device - Opt in to iCloud sync between iPhone and Mac - Voice transcription and voice memos - Lock screen widgets for text and voice capture - AI-suggested tags to make organizing easy or automatic AI tagging (requires apple intelligence) - Review mode to keep notes alive or let them go - Threads to evolve a thought and link them together - Search by keyword - Natural language reminders - just say "remind me tomorrow at 2pm" (requires apple intelligence)

About

Eidra

Effortlessly capture and recall details about people in your life. This AI-powered memory aid extracts names, interests, and follow-ups from your spoken or typed notes, making it easy to remember important information for both personal and professional connections.

Highlights
  • AI-powered information extraction
  • Voice and text input
  • Effortless recall of names and details
  • Personal and professional use cases
  • Automatic profile updates
  • Connection linking
  • Important dates and reminders
Read full description

Eidra is a quiet memory for the people in your life. Tap once. Speak. Or type a few words. The AI listens, extracts the names, places, interests, and follow-ups, and holds them for you. Months later, when you bump into someone and your mind goes blank, you ask Eidra. The answer is already there. WHO IT'S FOR The friend you saw at a dinner party last spring (whose new partner's name you keep almost remembering). The neighbor you've waved at for two years and never quite caught the name of. The mentor you met at a conference whose advice you can never relocate when you need it. Your kid's teacher, your cousin's husband, the barista who knows your order, the new colleague who mentioned a hobby you wanted to ask about. The dating app match whose stories you want to hold onto. The mom of your daughter's classmate. Anyone you've ever wanted to remember a little better. FOR WORK, TOO Sales reps building rapport with prospects across long deal cycles. Founders tracking the people they meet at every dinner, conference, and intro coffee. Recruiters keeping context on candidates and clients. Investors holding onto the threads of every founder pitch. Anyone whose job depends on remembering people well. Eidra is a personal CRM that does not feel like a CRM. The same fast capture, the same effortless recall, just as useful for the prospect you met last quarter as the friend you saw last weekend. WHAT MAKES IT FEEL DIFFERENT Most apps make you do the work of organizing. Eidra does it the moment you speak. You say, "had drinks with Leslie, she just got back from Lisbon and is starting sourdough lessons." Eidra extracts Leslie, the trip, the new interest, and the date. It writes a one-line entry into her timeline. It updates her structured profile so the next time you ask, "what's Leslie been up to," it remembers all of it. Her card even grows with her: as you capture more, Eidra reconciles the details over time, remembers the family and pets around her, and links her to the people she's connected to. It is not a note-taking app. It is not a journal. It is a memory aid that makes the small details feel effortless to keep. WHAT YOU CAN ASK Once you've captured something, you can ask Eidra anything about anyone: • When did I last see Marcus? • What was the name of Sarah's daughter? • Who did I meet last month interested in startups? • What was that book Olivia mentioned? Eidra answers in your own words, the moment you need it. ALSO INSIDE • Important dates & reminders: a calendar of every birthday, anniversary, and follow-up, with an optional heads-up two days before so you never miss one • Connections: link people together and remember how they relate • Family & pets: Eidra quietly remembers the people (and pets) around the people you know • Briefings: a 30-second AI recap before you see someone again • Custom prompts: ask anything specific ("what should I bring up with Eli?") • Hidden contacts: lock private notes behind Face ID • Voice or text capture, your choice every time SUBSCRIPTION TIERS Eidra is free to start, with limits. Unlock more with a 7-day free trial: • Eidra Casual ($2.99/month): unlimited contacts, 20 captures/day, 5 briefings/day, custom prompt briefings • Eidra Business ($4.99/month): unlimited contacts, 40 captures/day, 10 briefings/day, custom prompt briefings, priority support Subscriptions auto-renew monthly until canceled. Manage or cancel anytime in iOS Settings, Apple ID, Subscriptions. PRIVACY Your notes stay in your account. Audio is deleted right after transcription. AI runs server-side and never trains on your data. Read the full policy at eidra-site.vercel.app/privacy. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Questions or feedback: eidra.app@gmail.com

Screenshots

Prism Notes4 screens
Eidra4 screens

Verdict

The call

The clearest difference is update cadence: Prism Notes at every 3 days against Eidra's every 3 weeks. Prism Notes also leads on monetization model (free vs freemium) and ratings volume (38 vs 1). Eidra's advantage is iOS requirement (15.1 vs 18.6). On price, rating, ads and in-app purchases 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. Prism Notes sells 2 one-off in-app purchases and Eidra sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Prism Notes against 5.0 for Eidra. That said, the two scores are not equally well evidenced: Prism Notes has 38 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Prism Notes ships an update every 3 days, Eidra every 3 weeks. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard5 real differences · 5 level
Prism Notes versus Eidra: the parameters behind the verdict, then further details
ParameterPrism NotesEidra
PriceFreeFree
Rating4.9 (38 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings38 — better1
Update frequencyEvery 3 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPod
Requires iOS18.615.1 — better
Further details — not scored
Size24 MB44 MB
Age rating4+4+
DeveloperTommy JosephMikel Whiting

Customer experience

Prism Notes

All ratings38 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews15 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Eidra

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Prism Notes

One-time2
  • Lifetime Unlock$6.99
  • Lifetime Unlock$12.99
2 purchases

Eidra

Subscriptions2
  • Eidra Casual7 Days trial$2.991 Month
  • Eidra Business7 Days trial$4.991 Month

Questions

Is Prism Notes free?
Prism Notes is free to download, with in-app purchases available.
Is Eidra free?
Eidra is free to download, with in-app purchases available.
Which has better reviews, Prism Notes or Eidra?
Eidra is rated higher. Prism Notes averages 4.9 out of 5 from 38 ratings, while Eidra averages 5.0 from 1 ratings.
Do Prism Notes or Eidra have ads?
Neither Prism Notes nor Eidra shows ads.
Which is updated more often, Prism Notes or Eidra?
Prism Notes ships an update every 3 days, and Eidra every 3 weeks. Most recently, Prism Notes was updated on October 24, 2026 and Eidra on October 21, 2026.

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