Comparison

Side Brain vs Notivx

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

Head to head
About

Side Brain

Features
Read full description

Your second brain for the web. Save articles, read without distractions, and find anything instantly with AI-powered search. Side Brain turns any webpage into a clean, focused reading experience. One tap in Safari saves the article, strips away ads and clutter, generates an AI summary, and makes it searchable β€” all on your device, all offline. SAVE FROM SAFARI IN ONE TAP See an interesting article? Tap the share button and select Side Brain. The article is saved, cleaned up, and processed automatically. No manual copying, no bookmarking chaos β€” just a fast, frictionless capture flow that works with any webpage. READ WITHOUT DISTRACTIONS Enjoy articles the way they were meant to be read. Side Brain removes ads, pop-ups, cookie banners, and visual clutter. What remains is pure content in a clean, beautiful reading view designed for focus. AI SUMMARIES IN SECONDS Don't have time to read the full article? Side Brain generates key takeaways so you can grasp the main points at a glance. Decide in seconds whether an article deserves your full attention or a quick skim is enough. TRANSLATE TO YOUR LANGUAGE Reading in a foreign language? Side Brain translates entire articles into your preferred language using AI. Perfect for researchers, students, and professionals who follow international sources. SMART SEARCH THAT UNDERSTANDS YOU Forget keyword matching. Side Brain uses semantic search to find articles by meaning. Ask "articles about productivity tips" or "that piece about climate change" and get relevant results β€” even if those exact words never appear in the article. WORKS OFFLINE Every saved article is stored locally on your device. Read on the plane, in the subway, or anywhere without an internet connection. Your entire article library is always with you. PRIVATE BY DESIGN Your data stays on your device. Side Brain does not collect, share, or upload your articles, reading habits, or personal information. No accounts, no tracking, no cloud sync to third-party servers. POWERED BY GOOGLE GEMINI Side Brain's AI features β€” article summaries, translations, and semantic search embeddings β€” are powered by Google Gemini. We send only the article content needed to generate each result, and nothing is retained for training. WHO IS SIDE BRAIN FOR? β€’ Busy professionals who save dozens of articles but never find time to read them β€’ Students and researchers who need to quickly understand long academic or news articles β€’ Non-native speakers who want to read international content in their own language β€’ Curious minds who collect articles from across the web and want them organized in one place β€’ Anyone tired of ads, pop-ups, and website clutter ruining their reading experience HOW IT WORKS 1. Find an article in Safari or any browser 2. Tap Share β†’ Side Brain 3. The article is saved, cleaned, and summarized automatically 4. Read, search, or translate anytime β€” even offline SUBSCRIPTION INFORMATION Side Brain requires a paid subscription. Start with a free 3-day trial to explore all features. If you love it, choose monthly or yearly billing. β€’ Payment will be charged to your Apple ID account at confirmation of purchase β€’ Subscription automatically renews unless canceled at least 24 hours before the end of the current period β€’ Your account will be charged for renewal within 24 hours prior to the end of the current period β€’ You can manage and cancel your subscriptions by going to your App Store account settings after purchase β€’ Any unused portion of a free trial period will be forfeited when you purchase a subscription Terms of Use: https://apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://cooperative-catmint-496.notion.site/Privacy-Policy-for-Side-Brain-2e3d692d254d8083b4a9e16fa40c2c96

About

Notivx

Features
Read full description

Turn β€œread it later” into notes you can find again. Notivx brings web articles, your own thoughts, photos and PDFs together. Keep research beside your notes instead of scattered across bookmarks. Start free with up to 50 notes. SAVE FROM SAFARI Save a web page from the share menu and add tags or a reason for keeping it. Supported posts and videos can appear inside a note; other content can be kept as a link. ORGANIZE AND FIND Group notes in notebooks, add tags, and search titles and body text. Combine text, checklists, images and PDFs to keep source material and your ideas together. MORE ROOM TO READ Use Notivx on iPhone and iPad. Unfold iPhone Duo to browse the note list and read the selected note side by side. Enable iCloud sync to use your notes on supported devices signed into the same Apple Account. REVISIT IDEAS WITH A QUESTION On supported setups, on-device AI helps find saved text related to your current question, with reasons and excerpts you can review. START FREE. ADD PRO WHEN YOU NEED IT. Free: up to 50 notes, basic editing, Safari web clipping, title/body search and iCloud sync. Pro: unlimited notes, video saving, image/PDF OCR, search inside attachments and backup. Monthly and lifetime purchases unlock the same Pro features. See current prices in the app. ENEX note import is also supported. Web and video capture or display depends on the site, sign-in status and network connection. On-device AI requires iOS 26 or later and an Apple Intelligence compatible device, with Apple Intelligence enabled in a supported language and region and its models ready. Purchases are charged to your Apple Account. Monthly subscriptions renew automatically unless canceled at least 24 hours before the period ends. Manage them in your App Store account settings. Lifetime access is a one-time purchase with no automatic renewal. Switching to lifetime does not cancel an existing monthly subscription. Start with one article you want to keep. Privacy Policy: https://muscle-t.com/privacy-policy-notivx Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Side Brain3 screens
Notivx4 screens

Verdict

The call

The clearest difference is update cadence: Side Brain at every 4 days against Notivx's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Side Brain sells 3 in-app purchases, starting at $2.99 per 7 days and Notivx sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Side Brain ships an update every 4 days, Notivx every 4 months. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

Scorecard1 real difference Β· 5 level
Side Brain versus Notivx: the parameters behind the verdict, then further details
ParameterSide BrainNotivx
PriceFreeFree
Update frequencyEvery 4 days β€” betterEvery 4 months
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 β€” better18.5
Further details β€” not scored
Size6 MB7 MB
Age rating4+17+
DeveloperPetr NezvalMamiko Tsukamoto

In-app purchases

3 purchases

Side Brain

Subscriptions3
  • Weekly Premium3 Days trial$2.997 Days
  • Monthly Premium$7.991 Month
  • Yearly Premium$39.991 Year
2 purchases

Notivx

Subscriptions1
  • Notivx Pro$3.991 Month
One-time1
  • Notivx Pro Lifetime$39.99

Questions

Is Side Brain free?
Side Brain is free to download, with in-app purchases available.
Is Notivx free?
Notivx is free to download, with in-app purchases available.
Do Side Brain or Notivx have ads?
Neither Side Brain nor Notivx shows ads.
Which is updated more often, Side Brain or Notivx?
Side Brain ships an update every 4 days, and Notivx every 4 months. Most recently, Side Brain was updated on November 5, 2026 and Notivx on November 9, 2026.

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