Comparison

Dewey vs Aelius AI

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

Head to head
About

Dewey

Features
Read full description

People's names. People's pet's names. Membership numbers. Where you put the dang batteries. Write it down once and forget about it. No folders. No tags. No organizing of any kind. When you need it back, just ask Dewey. How it works: - Jot down a quick note and save. Feels like sending a text. - Ask Dewey anything about your notes, in plain language, and get the answer. - Want to browse? Your whole library is searchable on your own, anytime. Capture from anywhere: - A home screen widget shows your latest notes at a glance. - Add Dewey to your iPhone's Action Button to jump straight to a new note. Stop trying to be organized. Just write it down. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Aelius AI

This AI assistant offers private chat, image generation, and web search capabilities. It prioritizes user privacy with its own hardware and no data selling. Optional subscription unlocks advanced features.

Highlights
  • Private AI chat
  • Image generation from text
  • Web search for current information
  • Voice input and read-back
  • Conversation saving and searching
  • Optional Pro subscription for advanced features
Features
Read full description

Aelius is an AI assistant without the meter. Ask as much as you like, upload as many files as the question needs, and make as many pictures as you want. Start in seconds as a guest, with no sign-up. ASK ANYTHING Trip plans, homework, recipes, explanations and big decisions, answered in seconds. No daily cap and no credits to run out. MAKE ANY PICTURE Describe it in a sentence and Aelius draws it. Ask for changes until it's right, then save it to your photos. PROCESS HUGE FILES Drop in PDFs, spreadsheets, documents and photos together and ask one question across all of them. Check a lease against your budget, pull the numbers out of a long report, or compare three contracts at once. SEARCH THE LIVE WEB News, prices, scores and anything recent, with the sources linked so you can check them yourself. TALK IT THROUGH Have a real voice conversation, or dictate instead of typing. Answers can be read aloud to you. IT WORKS WHILE YOU DON'T Reminders that reach you on time, scheduled tasks like a daily news brief, and real calculations run in Python in the middle of an answer. PRIVATE BY DESIGN Aelius runs on hardware we own, not a big-tech cloud. Your chats are never sold and never used to train AI. No ads and no trackers. Use incognito for chats that are never saved, and delete everything from inside the app at any time. Aelius is free. An optional Aelius Pro subscription adds a much larger context window, extended thinking and deep research. Terms of Use: https://aeliusai.com/usage Privacy Policy: https://aeliusai.com/privacy Aelius can make mistakes. Check anything important, and don't treat its answers as medical, legal or financial advice.

Screenshots

Dewey3 screens
Aelius AI4 screens

Verdict

The call

Dewey and Aelius AI are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Dewey sells 1 in-app purchase, starting at $4.99 per month and Aelius AI sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Dewey ships an update every 8 days, Aelius AI weekly. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

ScorecardNo meaningful differences
Dewey versus Aelius AI: the parameters behind the verdict, then further details
ParameterDeweyAelius AI
PriceFreeFree
Rating—5.0 (5 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—5 — better
Update frequencyEvery 8 daysWeekly — better
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.0 — better
Further details — not scored
Size85 MB8 MB
Age rating4+17+
DeveloperDendric LLCWILLIAM CARVER STRULOEFF

In-app purchases

1 purchases

Dewey

Subscriptions1
  • Dewey Patron$4.991 Month
1 purchases

Aelius AI

Subscriptions1
  • Aelius Pro$3.991 Month

Questions

Is Dewey free?
Dewey is free to download, with in-app purchases available.
Is Aelius AI free?
Aelius AI is free to download, with in-app purchases available.
Do Dewey or Aelius AI have ads?
Neither Dewey nor Aelius AI shows ads.
Which is updated more often, Dewey or Aelius AI?
Dewey ships an update every 8 days, and Aelius AI weekly. Most recently, Dewey was updated on November 5, 2026 and Aelius AI on November 6, 2026.

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