Comparison

Comet vs Bionic Reading® Font Keyboard

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

Head to head
About

Comet

This AI-powered browser serves as a personal assistant, enhancing focus and streamlining workflows. It offers unified AI search, instant context, and automation across websites for tasks like summarizing, shopping, scheduling, and research.

Highlights
  • Unified AI search
  • Instant context and automation
  • Summarize, shop, schedule, research
  • Personalized workflow adaptation
  • Tab and inspiration management
Features
Read full description

Comet is an AI-powered browser that acts as a personal assistant and thinking partner. Boost your focus, streamline your workflow, and turn curiosity into momentum. · Unified AI search, instant context, and automation across every site. Summarize, shop, schedule, and research—directly in the browser. · Enjoy the web and let the AI assistant handle your chores · Do everything on your to-do list faster with Comet · Comet adapts to how you think and work, learning your habits to keep you organized. Never lose track of tabs or inspiration. Terms of Service: https://www.perplexity.ai/tos Privacy Policy: https://www.perplexity.ai/privacy

About

Bionic Reading® Font Keyboard

Enhance your reading and typing experience with a unique font that visually emphasizes words, making text clearer and faster to process. This keyboard works across all your favorite apps, offering a private and on-device solution for a better digital reading experience.

Highlights
  • Bionic Reading® live typing
  • Adjustable visual emphasis (F1-F5)
  • One-tap conversion to Bionic Reading®
  • Convert back to system font
  • Instant Bionic Reading® conversion from clipboard
  • Private on-device autocomplete
  • Light/Dark Mode support
Read full description

Bionic Reading® Font Keyboard is the smartphone upgrade for your eyes. Write messages, posts and comments directly with the patented Bionic Reading® method – in every app where you can type normally. Words are visually emphasized so your eyes find orientation faster and your text gets a unique look. Whether WhatsApp, iMessage, Instagram, TikTok, Telegram, Snapchat, X, YouTube, Reddit, LinkedIn or many other apps: with Bionic Reading® Font Keyboard, your text instantly becomes Bionic Reading®. Everything happens directly on your iPhone. No accounts. No servers. No tracking. No storage of your texts. WHY BIONIC READING® FONT KEYBOARD? Because your smartphone is full of text every day: messages, posts, comments, captions, chats, notes, links and content. With Bionic Reading®, text feels more focused, clearer and visually stronger. For school, university, work, social media, private messages and creative texts. KEYS AND FUNCTIONS. • Bionic Reading® live while typing: Write directly with the Bionic Reading® method. • F1–F5: Choose how strongly words are visually emphasized. • BR key: Convert your text to Bionic Reading® with one tap. • Refresh key: Convert Bionic Reading® back to the system font. • Clipboard key: Paste copied text and convert it instantly to Bionic Reading®. • Bin key: Delete text quickly, in a controlled way or step by step. • Share key: Share Bionic Reading® with friends, family or people it could help. • Autocomplete: The more you use the keyboard, the better the word suggestions become – directly on your device, private, no external servers. • Alternative characters by long press: Use special characters quickly and intuitively. • Precise typing feel: Magnetic touch zones and clear tap previews make typing comfortable. • Light/Dark Mode: Optimized for your iPhone design. • Apple system font San Francisco: For a clear display on iOS. • Languages/alphabet: Designed for the Latin alphabet and available in English, German, German (Switzerland), Spanish, French, Italian and Portuguese. PRIVACY IS A MUST. Bionic Reading® Font Keyboard was built so your texts stay with you. What you type stays with you. • No storage of your typed texts. • No tracking. • No analysis of your messages. • No accounts. • No server processing. • On-device processing directly on your iPhone. • Also works without “Full Access”. • In password and security fields, iOS automatically uses the Apple system keyboard. WHO IS THE APP FOR? For everyone who reads and writes on their smartphone every day. For young people. For social media. For chats. For school and university. For work. For people who want to grasp texts faster. For people who want a special look for their messages. And especially for people who sometimes find reading difficult. Many people with ADHD, dyslexia or other reading difficulties report that Bionic Reading® helps them grasp and understand content faster. Bionic Reading® is not a medical product and does not replace diagnosis or therapy. But for many people, it can be a real “Game Changer” in everyday life. A FAIR SUBSCRIPTION FOR ALL FEATURES. With your subscription, you receive full access to all features of Bionic Reading® Font Keyboard. Subscriptions are billed monthly or annually at the rate selected in the subscription plan. The subscription is deliberately low-cost. You support not just a keyboard, but the idea of making reading on smartphones easier, more beautiful and more accessible. TYPOGRAPHY. DESIGN. SWITZERLAND. Bionic Reading® comes from Switzerland. With over 30 years of typography experience, we know that small details make a big difference. How a word looks. Where the eye stops. How quickly text is understood. That is exactly why Bionic Reading® was developed. INTERNATIONAL AWARDS FOR BIONIC READING®. Bionic Reading® is a patented method and has received international awards. • German Innovation Award 2023: Gold • German Design Award 2023: Gold

Screenshots

Comet4 screens
Bionic Reading® Font Keyboard4 screens

Verdict

The call

The clearest difference is review sentiment: Comet at 65% against Bionic Reading® Font Keyboard's 0%. Comet also leads on rating (4.7 vs 2.3) and ratings volume (7.8K vs 3). Bionic Reading® Font Keyboard's advantage is update cadence (daily vs every 8 days). On price, ads, in-app purchases and monetization model 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. Comet sells 3 in-app purchases, starting at $20.00 per month and Bionic Reading® Font Keyboard sells 2 in-app purchases, starting at $1.00 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Comet holds the better App Store score, 4.7 against 2.3. That said, the two scores are not equally well evidenced: Comet has 7.8K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 65% of Comet's written reviews are positive against 0% of Bionic Reading® Font Keyboard's.

UpkeepUpdate frequency

Comet ships an update every 8 days, Bionic Reading® Font Keyboard daily. Both last shipped on November 5, 2026.

Scorecard4 real differences · 6 level
Comet versus Bionic Reading® Font Keyboard: the parameters behind the verdict, then further details
ParameterCometBionic Reading® Font Keyboard
PriceFreeFree
Rating4.7 (7.8K ratings) — better2.3 (3 ratings)
Positive reviews65.3% of reviews — better0.0% of reviews
Number of ratings7.8K — better3
Update frequencyEvery 8 daysDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS18.017.6 — better
Further details — not scored
Size291 MB837 MB
Age rating17+4+
DeveloperPerplexity AI, Inc.Bionic Reading AG

Customer experience

Comet

All ratings7,823 ratings
Positive93.9%
Neutral2.1%
Negative4.0%
Written reviews472 reviews
Positive65.3%
Neutral11.4%
Negative23.3%

Bionic Reading® Font Keyboard

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

3 purchases

Comet

Subscriptions3
  • Perplexity Pro$20.001 Month
  • Perplexity Pro$200.001 Year
  • Perplexity Max$200.001 Month
2 purchases

Bionic Reading® Font Keyboard

Subscriptions2
  • BR® Font Keyboard$1.001 Month
  • BR® Font Keyboard$10.001 Year

Questions

Is Comet free?
Comet is free to download, with in-app purchases available.
Is Bionic Reading® Font Keyboard free?
Bionic Reading® Font Keyboard is free to download, with in-app purchases available.
Which has better reviews, Comet or Bionic Reading® Font Keyboard?
Comet is rated higher. Comet averages 4.7 out of 5 from 7.8K ratings, while Bionic Reading® Font Keyboard averages 2.3 from 3 ratings.
Do Comet or Bionic Reading® Font Keyboard have ads?
Neither Comet nor Bionic Reading® Font Keyboard shows ads.
Which is updated more often, Comet or Bionic Reading® Font Keyboard?
Comet ships an update every 8 days, and Bionic Reading® Font Keyboard daily. Most recently, Comet was updated on November 5, 2026 and Bionic Reading® Font Keyboard on November 5, 2026.

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