SonikaAI turns documents and books into translated content with an optional AI voiceover โ in one workflow.
Upload a file (PDF, EPUB, DOCX, DOC, ODT, or TXT), pick a language, and get translated text and/or natural-sounding AI narration back. Headings, tables, and styles carry over cleanly in Word and OpenDocument files. You don't pick or configure translation/voice providers yourself โ the service routes that internally based on language, quality, and plan.
Most tools do only one thing โ translate, or narrate, or transcribe. SonikaAI bundles them into a single workflow, so you don't juggle separate services and interfaces.
A startup from Aachen, Germany that is founded by Mykola Orlenko.
Document Translation
Translate PDF, EPUB, DOCX, DOC, TXT, and ODT files into another language
Formatting Preservation
Headings, tables, and styles carry over cleanly in Word and OpenDocument files during translation
AI Voiceover / Narration
Generate natural-sounding audio from original or translated text, with improved voice quality on higher plans
Speech-to-Text Transcription
Turn audio into text, including DSS/DS2 recorder formats โ useful for lectures, interviews, and notes
Privacy Protection (PII Masking)
Personal data removal from text and audio before processing
No Provider Setup
Translation and voice providers are routed internally; nothing to configure
Async, Page-Range Processing
Process a full document, a page range, or a pilot run first โ built for large files
API Access (B2B/Enterprise)
Embed SonikaAI's translation and voice workflow into your own product
Because you don't need two or three separate tools. If you want to read a book in another language, translate a work document, or turn text into natural-sounding audio, SonikaAI does the whole thing in one place โ upload a file, pick a language, and get translated text and/or an AI voiceover back, without picking or configuring providers yourself.
This isn't just a consumer convenience โ it's architectural. SonikaAI's core is built to route translation and voice generation internally based on language, quality, and plan, instead of locking you into one provider. The same core is available to partners (EdTech, e-learning, publishing, LSPs) who want to embed a full translate + voiceover workflow into their own product through one API โ no need to integrate and maintain several AI providers separately.
It's also a low-risk way to start: the Demo plan is free with no credit card, and if you only need one book or document done, you can pay once without a subscription.
SonikaAI combines translation and AI voiceover in one workflow โ most tools do only one. Upload a book or document (PDF, EPUB, DOCX, DOC, ODT, TXT), and get it back translated and/or narrated, with headings, tables, and styles preserved in Word/OpenDocument files. You don't pick or configure translation/TTS providers yourself โ the service routes that internally based on language and plan.
A few things competitors in this space usually don't offer: optional EU-based personal data masking before processing, speech-to-text support for professional recorder formats (DSS/DS2) used by lawyers and journalists, and page-range control so you can preview quality on a few pages before committing to a full book. There's a free Demo plan (no card required), one-time full-document processing without a subscription, and monthly plans for regular use.
SonikaAI is for people who want books you can read or listen to in your language โ including EPUB and PDF books where format matters. Upload the file, and processing continues in the background; you don't need to manage anything manually.
More precisely, the audience spans four segments matched to how much someone reads or processes:
Curious/new users โ trying translation and voice quality on the free Demo plan, no commitment.
Readers/students โ processing chapters, course materials, or smaller books regularly (Standard plan).
Book-focused users โ power readers, researchers, educators, and non-fiction readers working through one large book a month (Pro plan).
Professionals/teams โ editors, businesses, and translation bureaus with higher volume, API access, or custom workflow needs (Contact us).
The last segment includes B2B partners โ EdTech, e-learning, and publishing platforms that embed SonikaAI into their own product via API.
SonikaAI started from a personal problem: its founder needed to learn from English-language books but wasn't reading in his original language easily โ reading quickly or listening well both took more time than he had. Good translation and natural voices used to be expensive or clunky, often landing on a robotic voice hard to listen to for long.
As AI models improved, a new problem appeared: using these tools meant juggling several services, each with its own interface and limitations. The scope became clearer watching his wife's work in the public sector, where translation and multilingual communication needs came up regularly โ the problem wasn't limited to education.
That's what led to SonikaAI: one service where translation, narration, and document work come together, without assembling the tools by hand.
The backend is built on Laravel (PHP), structured as a modular package architecture. The mobile/web client is built with Flutter, sharing one codebase across platforms. A separate Python service handles document processing โ parsing, format conversion, and file assembly across supported formats.
For AI capabilities, SonikaAI doesn't build its own translation or voice models โ it orchestrates multiple established cloud AI providers internally and routes each request to the right one based on language, quality tier, and plan. Users and partners never see or manage that routing; they just get the result.
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Check the traffic stats of SonikaAI on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
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