Comparison

Optical Toolkit vs Fast Word to PDF

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

Head to head

Word to PDF instantly

Free

🔧 Utilities

No ratingsView app →

About

Optical Toolkit

Features

Read full description

A clean and simple collection of tools to assist optical dispensers. Quickly transpose prescriptions, find compensated powers for tilt and vertex distance, estimate blank size and lens thickness, the oblique power, and more. Plus see extra details about the equations used and the studies they come from to learn more.

About

Fast Word to PDF

Convert Word documents (DOC/DOCX) to PDF format quickly and securely on your device. Ideal for professionals and students needing to share files accurately while preserving original formatting. Save and share your converted PDFs with ease.

Highlights

Convert DOC/DOCX to PDF
Fast and efficient conversion
Preserves original formatting
Secure on-device processing
Simple, user-friendly interface
Easy saving and sharing

Features

Read full description

Have a Word file you need to send as a PDF? This app lets you convert DOC or DOCX documents to PDF quickly, easily, and professionally. Whether for work, study, or sharing files, it offers accurate and secure conversion directly on your device. Key Features: Fast and efficient conversion: choose your Word file and convert it to PDF in seconds. Full compatibility: supports .doc and .docx files while preserving original formatting. Simple, user-friendly design: intuitive interface for all users. Security and privacy: files remain on your device; not uploaded to any server. Easy saving and sharing: save PDFs or share via email or AirDrop. Ideal for professionals, students, and anyone needing reliable document conversion.

Screenshots

Optical Toolkit3 screens

Fast Word to PDF4 screens

Verdict

The call

The clearest difference is in-app purchases: Optical Toolkit at none against Fast Word to PDF's 1. Fast Word to PDF's advantage is update cadence (every 8 days vs every 12 months). On price, ads, device support and iOS requirement 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. Fast Word to PDF sells 1 one-off in-app purchase. Optical Toolkit asks for nothing beyond the download.

UpkeepUpdate frequency

Optical Toolkit ships an update every 12 months, Fast Word to PDF every 8 days. The most recent releases landed on October 25, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 6 level

Optical Toolkit versus Fast Word to PDF: the parameters behind the verdict, then further details
Parameter	Optical Toolkit	Fast Word to PDF
Price	Free	Free
Positive reviews	—	0.0% of reviews
Update frequency	Every 12 months	Every 8 days — better
Ads	No	No
In-app purchases	No — better	Yes
Monetization	—	Free with in-app purchases
Devices	iPhone, iPad	iPhone, iPad
Requires iOS	17.0 — better	18.5
Further details — not scored
Size	10 MB	23 MB
Age rating	4+	4+
Developer	Luka Kovac	Antonio Gonzalez de la aleja german

In-app purchases

None

Optical Toolkit

No in-app purchases

1 purchases

Fast Word to PDF

One-time1

Remove Ads$2.99

Questions

Is Optical Toolkit free?

Optical Toolkit is free to download, with no in-app purchases.

Is Fast Word to PDF free?

Fast Word to PDF is free to download, with in-app purchases available.

Do Optical Toolkit or Fast Word to PDF have ads?

Neither Optical Toolkit nor Fast Word to PDF shows ads.

Which is updated more often, Optical Toolkit or Fast Word to PDF?

Optical Toolkit ships an update every 12 months, and Fast Word to PDF every 8 days. Most recently, Optical Toolkit was updated on October 25, 2026 and Fast Word to PDF on October 2, 2026.