Comparison

Voice Dream vs Speech2Math Calculator

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

Head to head
About

Voice Dream

Transform digital and scanned text into natural-sounding speech with advanced AI. Listen to PDFs, web pages, emails, and books with customizable voices and reading styles. Supports numerous document formats and cloud services.

Highlights
  • AI Text-to-Speech
  • Supports PDF, Web, Email, eBooks
  • Customizable voices and languages
  • Built-in scanner for paper documents
  • Speed-reading and distraction-free modes
  • Cloud service integration
Features
Read full description

Apple Design Award Winner! Voice Dream - Read Aloud lets you listen to PDFs, textbooks, Web pages, emails, and books using advanced AI Text To Speech! Featured by Apple as Best New App and App of the Day in 81 countries. Voice Dream - Read Aloud is also part of App Store Permanent Collections in Education. ---------------------------------------------------------------------------------------------------- “Both experts recommend Voice Dream Reader as the best app in the text-to-speech space.” - Wired “This app is one of the best educational finds of my entire career.” - Forbes “As a user myself and as a mother of a child with dyslexia, I am blown away by the features of Voice Dream.” - Quartz “Voice Dream Reader is hailed by many as the best mobile text-to-speech (TTS) app.” - Examiner ---------------------------------------------------------------------------------------------------- Text-to-Speech - 36 built-in iOS voices in 27 languages are also available for free. - 200+ additional premium voices in 30 languages from Acapela, NeoSpeech and Ivona available. - Correct pronunciation with your own pronunciation dictionary. - All voices work offline and play in the background even with the screen locked. Supported Document Formats - PDF, Plain text, MS Word, MS PowerPoint, RTF, and Google Docs. - Textbooks - Web articles. - Bookshare Books. - EPUB eBooks. (DRM-free books only. Kindle, iBooks and most commercial eBook platforms are not supported.) - DAISY text-based books and audiobook. - Audiobooks in MP3, MP4 or zipped MP3 format. - Rich text and image support for all documents. Built-in Scanner - Scan paper documents with the camera for text-to-speech. - State-of-the-art A.I. is fast and accurate, even in poor lighting conditions. - Works entirely on device: No need for internet and your data stays private. - Only languages using Latin alphabets are currently supported. Reading Styles - Tee-up a list of articles and play while you drive, walk or run. - Spoken word is highlighted to improve comprehension and retention. - Auto-scrolling and full screen, distraction-free mode to help reader focus. - Finger reading. For beginners to read by at running a finger under each word. - Pac-Man. Harvard and MIT developed speed-reading method for everyone to read at 2x speed with no loss of comprehension. - High contrast and large font size for low vision readers. - Optimized for VoiceOver, Braille and switch control. Tools - Recognize text for scanned PDF documents. - Bookmarking, text highlighting and annotation. Highlights and notes can be exported. - Full-text search. - Built-in dictionary. - Automatically skip text in PDF header and footer. Content Sources - Native support for Dropbox, Google Drive, iCloud Drive, Pocket, Instapaper and Evernote. - Native access to Bookshare. - Safari extension to save Web pages and Web addresses. - Support for Box and OneDrive via iOS Document Picker. Library Synchronization - Your entire library, including folders, reading locations, bookmarks and annotations are synchronized across all your devices using iCloud Drive A subscription is required to access the app. A free trial is offered to new users. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

Speech2Math Calculator

This app converts spoken mathematical commands into expressions for calculation. It offers a wide range of operations and supports numerous languages for voice input. An on-screen keyboard allows for manual editing of expressions.

Highlights
  • Speech to math expression conversion
  • On-screen keyboard for editing
  • Basic and scientific calculator functions
  • Multi-language voice input support
  • Trigonometric and logarithmic functions (PRO)
  • Text-to-speech (TTS) support
Features
Read full description

Speech2Math Calculator translates your speech into mathematical expressions. Speech2Math Calculator is a useful talking voice calculator application, which allows you to calculate easily by speaking. Speech2Math Calculator also has an on-screen keyboard that allows you to edit expressions. Plus, minus, times, divide operations, square, cube square root, power, and factorial operations are available. Scientific calculator features are available. You can select the input speech-language independent from your default device locale and language. Speech to Math Calculator is the only voice calculator which supports all the following languages and TTS (text to speech). Trigonometric functions such as sinus, cosine, tangent, arcsines, arccosine, arctangent, and logarithmic functions are available in the PRO version. Supported Languages: English, French, Spanish, Italian, Arabic, Bulgarian, Catalan, Danish, Greek, Estonian, Persian chandani, Finnish, Hebrew, Hindi, Hungarian, Indonesian, Japanese, Haitian, Korean, Lithuanian, Latvian, malay, Norwegian, Polish, Portuguese, Romanian, Danish, Russian, Slovak, Slovenian, Thai, Turkish, Ukrainian, Urdu, Vietnamese, Chinese.

Screenshots

Voice Dream4 screens
Speech2Math Calculator3 screens

Verdict

The call

The clearest difference is review sentiment: Voice Dream at 43% against Speech2Math Calculator's 0%. Voice Dream also leads on rating (4.5 vs 2.3) and update cadence (every 3 weeks vs every 4 months). Speech2Math Calculator's advantage is ads (none vs shown) and iOS requirement (10.0 vs 15.0). On price, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Voice Dream sells 16 in-app purchases, starting at $4.99 per month and Speech2Math Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Voice Dream holds the better App Store score, 4.5 against 2.3. That said, the two scores are not equally well evidenced: Voice Dream has 14K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 43% of Voice Dream's written reviews are positive against 0% of Speech2Math Calculator's.

UpkeepUpdate frequency

Voice Dream ships an update every 3 weeks, Speech2Math Calculator every 4 months. The most recent releases landed on October 22, 2026 and October 2, 2026 respectively.

Scorecard6 real differences · 4 level
Voice Dream versus Speech2Math Calculator: the parameters behind the verdict, then further details
ParameterVoice DreamSpeech2Math Calculator
PriceFreeFree
Rating4.5 (14K ratings) — better2.3 (3 ratings)
Positive reviews43.0% of reviews — better0.0% of reviews
Number of ratings14K — better3
Update frequencyEvery 3 weeks — betterEvery 4 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.010.0 — better
Further details — not scored
Size267 MB89 MB
Age rating+44+
DeveloperVoice Dream LLCAudiosdroid OU

Customer experience

Voice Dream

All ratings14,363 ratings
Positive86.7%
Neutral4.0%
Negative9.3%
Written reviews747 reviews
Positive43.0%
Neutral6.6%
Negative50.5%

Speech2Math Calculator

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews4 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

Voice Dream

Reported bugs

3 issues
  • Inconsistent behavior when importing files
  • Unreliable iCloud syncing
  • Jumps in playback position

Requested features

4 requests
  • Improved table of contents and navigation
  • Ability to annotate and highlight text
  • Syncing across multiple devices
  • Better support for mathematical content

Speech2Math Calculator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

16 purchases

Voice Dream

Subscriptions9
  • Monthly Subscription14 Days trial$4.991 Month
  • Annual Subscription3 Days trial$39.991 Year
  • Annual Subscription7 Days trial2 variants$59.991 Year
Show 6 more
  • Annual Subscription$59.991 Year
  • Annual Subscription3 Days trial$59.991 Year
  • Annual Subscription1 Month trial$79.991 Year
  • Annual Subscription7 Days trial$79.991 Year
  • Premium3 Days trial$79.991 Year
  • Annual Subscription7 Days trial$89.991 Year
One-time7
  • Will (Acapela US English Voice)$4.99
  • Julie (NeoSpeech US English)$4.99
  • Kate (NeoSpeech US English Voice)$4.99
Show 4 more
  • Paul (NeoSpeech US English Voice)$4.99
  • Salli (Ivona US English Voice)$4.99
  • James (NeoSpeech US English Voice)$4.99
  • Hugh (NeoSpeech US English Voice)$4.99
1 purchases

Speech2Math Calculator

One-time1
  • Speech2Math Calculator PRO$0.99

Questions

Is Voice Dream free?
Voice Dream is free to download, with in-app purchases available.
Is Speech2Math Calculator free?
Speech2Math Calculator is free to download, with in-app purchases available.
Which has better reviews, Voice Dream or Speech2Math Calculator?
Voice Dream is rated higher. Voice Dream averages 4.5 out of 5 from 14K ratings, while Speech2Math Calculator averages 2.3 from 3 ratings.
Do Voice Dream or Speech2Math Calculator have ads?
Voice Dream shows ads; Speech2Math Calculator does not.
Which is updated more often, Voice Dream or Speech2Math Calculator?
Voice Dream ships an update every 3 weeks, and Speech2Math Calculator every 4 months. Most recently, Voice Dream was updated on October 22, 2026 and Speech2Math Calculator on October 2, 2026.

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