Celer vs BioDoc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Celer
Enhance your reading speed, focus, and comprehension with a scientifically-backed method. This app offers an immersive environment and assistive technology to help you absorb information faster and retain it better. It's an essential tool for students, professionals, and individuals with neurodivergent reading needs.
- Read 2-3x faster
- Sharpen focus with immersive environment
- Boost memory and retention
- Assistive tool for ADHD & Dyslexia
- Import EPUB, PDF, mobi, rtf, txt
- Read articles and web content
- Customizable themes
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Ever finish a page and realize you remember nothing? Read the same sentence three times and still lose your place? Celer was built for exactly that. Celer guides your eyes through the text with subtle highlighting, so your attention has a track to follow. Readers with ADHD and dyslexia tell us it's the difference between fighting a page and finishing it. HOW IT HELPS • Guided highlighting keeps your place — no more re-reading the same line • Adjustable pace: the text moves with you, not against you • Distraction-free reading screen, tuned for focus • Comprehension grows because your attention stays where the words are YOUR LIBRARY, YOUR WAY • Import EPUB, PDF, MOBI, RTF and TXT • Massive free classics library, ready to read • Follow articles and news with built-in RSS • Highlights and notes that stay with your books PRIVATE BY DESIGN No accounts required, no personal data collected. Your reading stays yours. Whether you have ADHD, dyslexia, or just a phone full of distractions, Celer helps you actually finish what you start. Try it free. Celer is an assistive reading tool, not a medical device or treatment. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
BioDoc
Enhance your reading speed and comprehension with a bionic reading method. This app guides your eyes through text, helping you absorb information faster and retain more. It's ideal for students, individuals with ADHD, or anyone seeking efficient reading.
- Bionic reading technology
- Bold reading method
- Copy and paste text input
- Send text to Kindle
- User-friendly interface
- Subscription options
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Do you struggle with long reading assignments or wish to read faster and retain more information? Look no further than Fast Read – the innovative new app that will change how you read. Using bionic reading technology, Fast Read helps guide your eyes and brain through text, allowing you to read faster and more efficiently. Copy and paste any text into the app and let Fast Read do the rest. With our bold reading method, you'll be able to absorb readers quickly and retain more of what you read. Fast Read isn't just about speed – it's also about improving your comprehension. By focusing on the most critical parts of words, our app helps you understand the context of texts more efficiently. With a user-friendly interface and a range of subscription options, you can choose the best plan for you. Plus, with the ability to send text directly to Kindle, you can easily access your reading materials on any device. Whether you're a student tackling a tough assignment, someone with ADHD looking to improve your focus, or simply looking for a quick and efficient way to read; Fast Read has got you covered. So why wait? Download Fast Read now and start boosting your reading skills today! Subscription Options: - 1 month ($0.99) - 12 months ($9.99) Note: Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. After purchase, you can manage your subscription and turn off auto-renewal by visiting your iTunes Account Settings. Privacy Policy: https://tolunaykan.github.io/biodoc-privacy-policy.html Terms of Use: https://tolunaykan.github.io/biodoc-terms-of-use.html Need help or have a question? Contact us at tolunaykandirmaz@gmail.com
Screenshots
Verdict
The clearest difference is review sentiment: BioDoc at 100% against Celer's 57%. BioDoc also leads on rating (5.0 vs 4.0) and iOS requirement (12.4 vs 17.0). Celer's advantage is ads (none vs shown) and ratings volume (21 vs 1). On price, update cadence, 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
Both are free to download. Celer sells 4 in-app purchases, starting at $7.99 per month and BioDoc sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
BioDoc holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Celer has 21 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 57% of Celer's written reviews are positive against 100% of BioDoc's.
Celer ships an update every 10 days, BioDoc fortnightly. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.
| Parameter | Celer | BioDoc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (21 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 57.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 21 — better | 1 |
| Update frequency | Every 10 days — better | Fortnightly |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 12.4 — better |
| Further details — not scored | ||
| Size | 62 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Mobile Craft MB | Tolunay Kandirmaz |
Customer experience
Celer
BioDoc
In-app purchases
Celer
- Premium month$7.991 Month
- Premium quarter$17.993 Months
- Premium Year7 Days trial$34.991 Year
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- Premium Year Plan$79.991 Year
BioDoc
- Premium Features$2.991 Month
- Premium Features$9.991 Year








