Comparison

Optical Toolkit vs Mail Hub

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

Head to head
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

Mail Hub

Instantly create and manage multiple custom email addresses from a single, organized inbox. Receive emails with attachments and multimedia, and easily download or share them. Ideal for temporary registrations or anonymous communication.

Highlights
  • Create multiple custom email addresses
  • Unified inbox management
  • Receive emails with attachments
  • View embedded multimedia
  • Download and share attachments
  • Temporary email generation
Features
Read full description

Using Mail Hub app, you can instantly generate a custom email address and receive emails instantly, including photos or any other attachments. By using Mail Hub, you can: - Create and view multiple custom email addresses - Manage your mail easily from one unified page. - Track all received emails - View all information in a well-organized inbox. - View embedded multimedia emails - Emails with embedded images and multimedia let you understand more in-depth. - Download and share email attachments - Save or share email attachments with just one click. Use cases: - When you need temporary email addresses to register for various services. - When you want to send anonymous emails. - When an emergency email address is needed. - When communicating with people you don't want to disclose your normally used email address to. Mail Hub will be your best partner in handling emails, helping you focus on what really matters. Download Mail Hub now and start your worry-free mail experience. If you choose to purchase Mail Hub, payment will be charged to your iTunes account, and your account will be charged for renewal within 24 hours before the end of the current period. Automatic updates can be turned off at any time through the iTunes store settings. The price of premium subscriptions may vary by user country/region, please see specific terms and prices on the purchase screen. Any unused portion of a free trial period will be forfeited when you purchase a subscription. All personal data are stored according to the privacy policy and terms of service, which can be obtained here: Privacy Policy: https://www.revenuebee.top/pp/6475181369/ Terms of Service: https://www.revenuebee.top/tou/6475181369/ Please note: You cannot use this app to send emails, only to receive them.

Screenshots

Optical Toolkit3 screens
Mail Hub4 screens

Verdict

The call

The clearest difference is in-app purchases: Optical Toolkit at none against Mail Hub's 5. Optical Toolkit also leads on ads (none vs shown). Mail Hub's advantage is update cadence (every 2 weeks vs every 12 months) and iOS requirement (15.0 vs 17.0). On price 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. Mail Hub sells 5 in-app purchases, starting at $1.99 per 7 days. Optical Toolkit asks for nothing beyond the download.

UpkeepUpdate frequency

Optical Toolkit ships an update every 12 months, Mail Hub every 2 weeks. The most recent releases landed on October 1, 2026 and September 15, 2026 respectively.

Scorecard4 real differences · 6 level
Optical Toolkit versus Mail Hub: the parameters behind the verdict, then further details
ParameterOptical ToolkitMail Hub
PriceFreeFree
Rating—4.3 (15 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—15 — better
Update frequencyEvery 12 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size10 MB35 MB
Age rating4+17+
DeveloperLuka Kovac国良 李

In-app purchases

None

Optical Toolkit

No in-app purchases

5 purchases

Mail Hub

Subscriptions5
  • 1 Week3 Days trial$1.997 Days
  • WEEKLY ACCESS$1.997 Days
  • MONTHLY ACCESS$3.991 Month
Show 2 more
  • YEARLY ACCESS$24.991 Year
  • 12 Months$49.991 Year

Questions

Is Optical Toolkit free?
Optical Toolkit is free to download, with no in-app purchases.
Is Mail Hub free?
Mail Hub is free to download, with in-app purchases available.
Do Optical Toolkit or Mail Hub have ads?
Mail Hub shows ads; Optical Toolkit does not.
Which is updated more often, Optical Toolkit or Mail Hub?
Optical Toolkit ships an update every 12 months, and Mail Hub every 2 weeks. Most recently, Optical Toolkit was updated on October 1, 2026 and Mail Hub on September 15, 2026.

Other comparisons