Synthy vs Fast Annotate
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Synthy
Transform documents, books, and web content into audio with advanced text-to-speech technology. Scan physical documents or import digital files and listen to them read aloud with natural-sounding AI voices. Adjust playback speed and enjoy background listening for a seamless audio experience.
- Scan and read documents
- Text to speech with AI voices
- Adjustable reading speed
- Import files and web links
- Background listening mode
- Type and listen functionality
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Introducing Synthy — Your Ultimate Audio Books & Reading App! Do you have a mountain of documents, books, or material to read but no time? Synthy is the perfect PDF reader, text to speech tool, and voice aloud reader to save your day! Simply scan and read, upload text, document or web-link and listen to any text aloud. Whether it’s book reading, articles, or newspapers, our app reads everything for you with natural TTS voices. Key Features of Synthy: Text to Speech & Voice Reader Transform any text into audio! Use your phone’s camera to scan and read books (PDF, EPUB, DOCX, etc.), and let Synthy read text aloud like a personal audio book reader. Perfect for multitasking or book reading on the go! Realistic AI Voices for Document Reader No more robotic sounds! Enjoy voice reader technology with lifelike voices. Whether for PDF read aloud, screen reader tasks, or reading apps, Synthy adapts to your style. Adjustable Speed Reading App Customize pacing for read aloud comfort. Speed up for quick reviews or slow down to savor content—ideal for audio books and document reader needs. Type & Listen with Voice Aloud Reader Need to read text aloud from notes? Type anything, and Synthy will turn text to voice instantly. Great for students and professionals! Import Files & Web Content Import PDFs, eBooks, or links—Synthy acts as a screen reader for all formats. Even online articles become audio books with our TTS! Background Mode Keep listening while your phone is locked. A must-have for book reading fans and voice reader enthusiasts! Why Choose Synthy? More than a PDF reader or text to speech tool, Synthy is your all-in-one voice aloud reader and audio book reader. Whether for scan and read convenience, read aloud flexibility, or document reader functionality. Book reading lovers Professionals needing PDF read aloud Anyone who wants a screen reader or voice reader to speak for me effortlessly! Privacy policy: https://speechie.app/privacy.html Terms of use: https://speechie.app/terms.html Support: • Email: support@speechie.app • FAQ: https://speechie.app/faq.html
Fast Annotate
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Edit and annotate your images: - Overlay text - Rectangles, circles, lines, arrows, stars, polygons - Multiple images - Custom drawn lines - Squaring images - Comic annotations Enjoy intelligent snapping for edits. With support for HDR-images.
Screenshots
Verdict
The clearest difference is price: Synthy at Free against Fast Annotate's $4.49. Synthy also leads on iOS requirement (16.6 vs 18.0). Fast Annotate's advantage is in-app purchases (none vs 7). On update cadence, ads and device support 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
Synthy is free to download; Fast Annotate costs $4.49 up front. Synthy sells 7 in-app purchases, starting at $4.99 per 7 days. Fast Annotate asks for nothing beyond the download.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.
| Parameter | Synthy | Fast Annotate |
|---|---|---|
| Price | Free — better | $4.49 |
| Rating | 4.2 (384 ratings) — better | — |
| Positive reviews | 81.3% of reviews | — |
| Number of ratings | 384 — better | — |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 213 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Dating onlain, ooo | Oliver Letterer |
Bugs and requests
Synthy
Reported bugs
4 issues- Scanning issues with page breaks
- Playback pauses at paragraph ends
- Inconsistent text recognition
- Subscription cancellation problems
Requested features
5 requests- Highlight and annotate text
- Background playback with screen lock
- More language and voice options
- Improved OCR accuracy
- Easier file management and organization
Fast Annotate
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Synthy
- Synthy Scan & Read Premium$4.997 Days
- Endless Listening with Synthy$5.991 Month
- Endless Listening with Synthy$9.991 Month
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- Endless Listening with Synthy3 Days trial$12.991 Month
- Three months$34.993 Months
- 6 month premium3 Days trial$49.996 Months
- Synthy Premium3 Days trial$79.991 Year
Fast Annotate
No in-app purchases
Questions
Is Synthy free?
Is Fast Annotate free?
Do Synthy or Fast Annotate have ads?
Which is updated more often, Synthy or Fast Annotate?
Other comparisons
