Comparison

Donna vs Second Brain

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

Head to head
About

Donna

Features
Read full description

Donna is your AI Personal Assistant

About

Second Brain

Features
Read full description

Your brain was built to think, not to remember. SecondBrain turns any spoken thought into a filed, titled, dated record in about three seconds. No folders. No tagging. No deciding where it goes. Just talk. Your second brain does the rest. SUBSCRIPTION REQUIRED Second Brain requires an auto-renewable subscription ($7.99 per week or $29.99 per month). Every feature described below is included with an active subscription - there are no extra purchases. HOW IT WORKS Hold the button and say what's on your mind - in the car, on a walk, halfway out the door. SecondBrain transcribes it, works out what you meant, and files it in the right project with the right due date. Then it buzzes back to confirm. "Call the accountant next Friday about the trust" becomes a task, in Client Work, due Friday. You never picked a project. You never set a date. EVERYTHING IN ONE PLACE โ€ข Today - your daily brief, what's due, and what's coming up next โ€ข Tasks - organized by project and due date, automatically โ€ข Calendar - tasks and events together in one month view โ€ข Brain - every note, photo, link and file you've ever captured โ€ข Projects - see what's active and what's gone quiet CAPTURE ANYTHING Voice, typed notes, photos, links, files. It all lands in the same place and gets sorted for you. Anything the app isn't confident about goes to a review inbox instead of being filed wrong - so nothing is ever lost or buried in the wrong folder. ASK YOUR BRAIN Get answers from everything you've captured. Your notes stop being a graveyard and start being something you can actually use. PRIVATE BY DESIGN Your content lives in a private database. Nothing is shared, nothing is public, and your notes are never sold or used to train AI models. Export or delete everything at any time. SUBSCRIPTION SecondBrain requires a SecondBrain Pro subscription - $7.99/week or $29.99/month. All features shown, including voice capture, AI filing, the Daily Brief, and instant search, are part of Pro. Payment is charged to your Apple ID; subscriptions auto-renew unless cancelled at least 24 hours before the period ends. Manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://second-brain.app/terms Privacy Policy: https://second-brain.app/privacy

Screenshots

Donna4 screens
Second Brain4 screens

Verdict

The call

The clearest difference is in-app purchases: Donna at none against Second Brain's 2. Donna also leads on iOS requirement (15.1 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Second Brain sells 2 in-app purchases, starting at $7.99 per 7 days. Donna asks for nothing beyond the download.

UpkeepUpdate frequency

Donna ships an update every 8 days, Second Brain every 5 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

Scorecard2 real differences ยท 4 level
Donna versus Second Brain: the parameters behind the verdict, then further details
ParameterDonnaSecond Brain
PriceFreeFree
Update frequencyEvery 8 daysEvery 5 days โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS15.1 โ€” better18.0
Further details โ€” not scored
Size40 MB55 MB
Age rating12+4+
DeveloperKishan SagathiyaTerra Innovations

In-app purchases

None

Donna

No in-app purchases

2 purchases

Second Brain

Subscriptions2
  • Weekly$7.997 Days
  • Monthly$29.991 Month

Questions

Is Donna free?
Donna is free to download, with no in-app purchases.
Is Second Brain free?
Second Brain is free to download, with in-app purchases available.
Do Donna or Second Brain have ads?
Neither Donna nor Second Brain shows ads.
Which is updated more often, Donna or Second Brain?
Donna ships an update every 8 days, and Second Brain every 5 days. Most recently, Donna was updated on November 5, 2026 and Second Brain on November 10, 2026.

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