MailCat vs WiseBooster
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MailCat
This app helps organize your inbox by automatically categorizing emails using machine learning and custom rules. It can filter spam and move messages to designated mailboxes, supporting IMAP accounts.
- Machine learning spam filtering
- Rule-based email categorization
- IMAP account support
- Move emails to specified mailboxes
- Blacklist and spam learning data
- Multiple account switching
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■MailCat is a Mail Categorizer: MailCat is a Mail Categorization App. MailCat has two kinds of categorization method --- a machine learning categorization and a rule based categorization. MailCat can filter out spams from the incoming mail messages by the machine learning categorizer, and move mail messages to the specified mailbox by rules. MailCat has no mail sending facility and has only support for IMAP. POP/SMS/MMS are not supported. ■How to connect to an IMAP mail server: To connect an IMAP mail server, just specify your full email address as your login name(username) and the password you log in to your account. If you don't know your login name/password, contact an organization or personnel in charge of the IMAP mail server to get a hostname, user id(name), password. ■Basic operation: * Pull down to Refresh/Long Press to reload&spam filtering * Push up to download older mails at the bottom of message lists *Tap/Swipe to switch accounts Tapping/Swiping the navigation bar of the Mailbox list switches the account if multiple accounts are available. * Tap/Swipe to move around mailboxes (among 'Quick View List') * Move/Delete/Mark mail messages by the toolbar on the navigation bar * Tap/Swipe the navigation bar to turn over mail messages * Add a mail to the blacklist/spam learning data by swiping *Tap a Tab bar to switch the rule view. There are 4 views to show the rules for ‘Sender’, ’Subject’, ‘Message’, ‘Compound’. ■Spam filtering: MailCat generates a spam filter by learning from spam and ham messages in INBOX. Just follow the steps, you can have your own spam filter. 1. Tap 'Edit' button in Monitor. 2. Pick up several mail messages by tapping each table cell. 3. Tap "SPAM" button on the command bar. 4. Likewise pick up mails, and "HAM" button on the command bar. 5. "Pull down to Refresh" or "Long press on the navigation bar" triggers Machine learning, then a spam filter will be generated. 6. Repeat the steps(1-5) until the number of spams and hams reaches about 16. 7. After learning 16 spams and 16 hams, MailCat starts judging which mail is spam or not. 8. Check the filtering result on Monitor. 9. Correct errors and 'Pull down to Refresh" or "Long press( 2sec) on the navigation bar", re-learning starts and your spam filter gets smarter. Repeat the steps(8-9) until no errors are found. ■Mail Rules: There are 4 conditional fields for mail rules --- sender, subject, message, compound. Mail rules are only applied for 'INBOX'. To edit or create a mail rule, tap 'Edit' button on the Mailbox list. The selection menu appears, choose 'Rule'. Mail rules for ‘Sender’ will appear. Tap a Tab bar to switch a view . ■Other usage: Please visit support page. http://www.seimitsusakufu.com/iOS/mailapps/en/support.html ■Support: To get a further support , contact through the following mail address. support_seimitsu@jcom.home.ne.jp
WiseBooster
This app helps you free up iPhone storage by identifying and removing unnecessary files, organizing media, and cleaning up your contacts. It also offers secure private storage for photos and videos, and an intelligent document assistant for summarizing and understanding file content.
- Smart storage cleaner
- Photo and video cleanup
- Contact cleanup
- Secure private storage
- Storage overview
- Smart document assistant
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Keep your iPhone clean, organized, and protected with WiseBooster: Clean Storage. Free up storage, remove duplicate and similar photos, organize contacts, protect private files with Face ID, check your internet speed, and manage your documents — all in one simple, secure app. Whether you're cleaning your gallery, organizing contacts, or keeping personal files private, WiseBooster helps you stay in control of your iPhone storage with easy-to-use tools designed for everyday use. SMART CLEANUP Free up valuable storage in just a few taps. Quickly find duplicate and similar photos, screenshots, large videos, and other unnecessary files. Review everything before deleting so you always stay in control. PHOTO CLEANUP Keep only your best memories. Identify duplicate and similar photos, blurry images, screenshots, and large videos to organize your gallery and reclaim valuable storage space. CONTACT CLEANUP Keep your contacts organized. Merge duplicate contacts, remove outdated information, and maintain a clean, organized address book with just a few taps. PRIVATE & SECURE Protect your personal content with Face ID. Store private photos, videos, and files in a secure folder that helps keep your personal content protected and easily accessible only to you. STORAGE OVERVIEW Understand how your storage is being used. View your storage usage, identify what takes up space, and decide when it's time for a cleanup. INTERNET SPEED TEST Check your internet connection anytime. Measure download speed, upload speed, and ping in seconds with the built-in speed test. DOCUMENT ASSISTANT Understand your documents faster. Upload PDFs, DOCX, TXT, or image files and quickly receive: • Clear document summaries • Easy-to-understand explanations • Answers to your questions • Important dates and key information Designed to help you understand documents faster and save valuable time. WHY CHOOSE WISEBOOSTER? • Free up storage space • Remove duplicate and similar photos • Organize your photo library • Merge duplicate contacts • Protect private files with Face ID • Check internet speed • Understand documents faster • Clean, organize, and manage your iPhone in one place WiseBooster combines powerful cleanup tools with privacy and productivity features to help keep your iPhone organized, secure, and easy to manage. Simple. Secure. Efficient. PREMIUM ACCESS Unlock unlimited access to all WiseBooster features with a subscription. Premium includes unlimited use of all available tools and future feature updates. Subscriptions are available with weekly and quarterly plans. Payment will be charged to your Apple ID account upon confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current billing period. You can manage or cancel your subscription anytime in your App Store account settings. End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: WiseBooster at Free against MailCat's $3.99. WiseBooster also leads on rating (5.0 vs 1.0) and update cadence (every 3 weeks vs every 4 months). MailCat's advantage is in-app purchases (none vs 7). On ratings volume, 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
WiseBooster is free to download; MailCat costs $3.99 up front. WiseBooster sells 7 in-app purchases, starting at $8.99 per 7 days. MailCat asks for nothing beyond the download.
WiseBooster holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
MailCat ships an update every 4 months, WiseBooster every 3 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | MailCat | WiseBooster |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 1.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 4 MB | 93 MB |
| Age rating | 4+ | 4+ |
| Developer | Seimitsusakufu LLC | LEXLEGATI IMMO |
Customer experience
MailCat
WiseBooster
In-app purchases
MailCat
No in-app purchases
WiseBooster
- One week3 Days trial$8.997 Days
- One week3 Days trial$12.997 Days
- Quarter$69.993 Months
- 3 tokens$2.99
- 7 tokens$6.99
- 30 tokens$29.99
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- 50 tokens$49.99









