VDWrite vs Unit Circle Calculator PRO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VDWrite
This writing app offers text-to-speech proofreading to catch errors, a word finder for better vocabulary, and an active outline for organizing and restructuring documents. It's designed to help users write more effectively and efficiently.
- Text-to-speech proofreading
- Phonetic and meaning word search
- Active document outline
- Voice dictation support
- iCloud synchronization
- Cloud storage integration
Read full descriptionHide full description
Voice Dream Writer helps everyone write better: Text-to-speech proofreading reduces mistakes, phonetic and meaning search help you use the right words, and an active outline helps you organize and improve the structure of your writing. • Featured in the US App Store Education Collection. • "Voice Dream Writer's technically designed for people with reading disabilities, but it's useful for just about anyone who needs a little help proofing." - Lifehacker Text-To-Speech Proofreading. Professional proofreaders recommend reading out loud as the best way to catch mistakes. Like a personal proofreader, Voice Dream Writer reads your writing using text-to-speech, so you can easily spot awkward sentences, grammatical errors and typos. Also, it can read words and sentences as you type or voice dictate. This way, you can type faster because you no longer have to look up to check the text you just wrote. Word Finder. Voice Dream Writer helps you find the right words using phonetic search and meaning search. For example, search for "inuf" phonetically, and you will find "enough", and search for "Fast Africa Cat" by meaning and you will find "Cheetah." Word Finder also shows you the dictionary definition of a word as you type without you having to select anything or open another program. Outline. As you write, Voice Dream Writer automatically creates an outline of headings, paragraphs and sentences. The Outline helps you structure your document better by giving you an always-on overview. You can also quickly navigate to a section in a long document without endless scrolling. Finally, you can drag and drop elements in the Outline to organize your writing. No more selecting, cutting and pasting large blocks of text. Besides these unique features, Voice Dream Writer also comes with everything you would expect from any great writing tool: • Comprehensive settings for text appearance • Uncluttered writing area • Search for text • Search for misspelled words • Word count • Synchronize and backup with iCloud • Import and export for Dropbox, Google Drive, and Box • Preview and print with multiple themes • Markdown support for formatting • Export to Microsoft Word format (compatible with Apple Pages) • Support for Bluetooth keyboard The app is not only fully accessible, it was designed with students and adults with print disabilities in mind. There are special tools for VoiceOver users to manage the cursor, select text, and find and correct misspelled words by stepping through them. Voice-based Proofreading and Phonetic Search are invaluable for people with dyslexia. Also included is the research-proven Dyslexie font. Voice Dream Writer will continue to evolve. We would love to hear from you!
Unit Circle Calculator PRO
Visualize and understand the unit circle with step-by-step calculations, diagrams, and animations. Supports various input formats including negative values, decimals, fractions, and pi. Save, share, and revisit past calculations.
- Unit circle visualization
- Step-by-step calculation
- Diagrams and animations
- Supports negative values, decimals, fractions, and π
- Calculation history
- Shareable solutions
Read full descriptionHide full description
The unit circle is visualized and explained with calculation steps, diagrams and animations. Enter the radian or the angle α to calculate the results. Negative values, decimals, fractions and π are supported. The solution is displayed step by step. All calculations are saved in the history. The solution can be shared. [ Contents] - all important quantities for the unit circle - results are also calculated as π-value - animation to show the angle α - diagrams for sine and cosine - history function to save the input - detailed solution - negative values, decimal numbers, fractions and π are supported - no ads! [ Usage ] - there are fields for entering values using a special keyboard - press the check mark button at the bottom right to start the calculation - if values are missing, all fields will be marked orange - if the values are wrong, the affected field will be highlighted red - the entries in the history can be deleted or sorted - if you select an entry in the history, it will be automatically loaded for the calculation - the whole history can be deleted by pressing a button - solutions can be shared
Screenshots
Verdict
The clearest difference is price: VDWrite at Free against Unit Circle Calculator PRO's $1.99. Unit Circle Calculator PRO's advantage is rating (4.7 vs 4.1) and review sentiment (100% vs 68%). On ratings volume, update cadence, ads and in-app purchases 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
VDWrite is free to download; Unit Circle Calculator PRO costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Unit Circle Calculator PRO holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 65 and 25 respectively. Written reviews point the same way: 68% of VDWrite's written reviews are positive against 100% of Unit Circle Calculator PRO's.
Both ship on a similar rhythm, roughly monthly. Both last shipped on September 29, 2026.
| Parameter | VDWrite | Unit Circle Calculator PRO |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.1 (65 ratings) | 4.7 (25 ratings) — better |
| Positive reviews | 67.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 65 — better | 25 |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 47 MB | 181 MB |
| Age rating | 4+ | 4+ |
| Developer | Opus Noma LLC | Glindemann, Sennoun, Langer GbR |
Customer experience
VDWrite
Unit Circle Calculator PRO
In-app purchases
VDWrite
No in-app purchases
Unit Circle Calculator PRO
No in-app purchases
Questions
Is VDWrite free?
Is Unit Circle Calculator PRO free?
Which has better reviews, VDWrite or Unit Circle Calculator PRO?
Do VDWrite or Unit Circle Calculator PRO have ads?
Which is updated more often, VDWrite or Unit Circle Calculator PRO?
Other comparisons















