MailCat vs Ultimate Cleaner
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
Ultimate Cleaner
This utility app helps free up significant storage space on your iPhone by identifying and removing duplicate files, unwanted screenshots, and unused videos. It also offers features to merge duplicate contacts and secure private photos.
- Smart Clean & Storage Dashboard
- Merge Duplicate Contacts
- Duplicate Photos Cleaner
- Screenshot and Video Cleaner
- Calendar Cleaner
- Secret Space for Photos
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Running out of storage again? Ultimate Cleaner finds everything that clogs your iPhone — duplicate photos, huge videos, old screenshots — and clears it in a few taps. WHY ULTIMATE CLEANER • Smart Clean — one scan shows exactly what is wasting space • Duplicate Photos — keeps the best shot, removes the copies • Screenshots — sweep hundreds of old screenshots in seconds • Large Videos — find the space hogs you forgot about • Video Compressor — shrink videos with presets or exact size • Photo Compressor — smaller photos, same quality • Calendar Cleaner — clear old events in one go • Merge Contacts — combine duplicate contacts into one card • Secret Space — hide private photos behind a passcode • Speaker Cleaner — eject water & dust with sound waves • Phone Cooler — help your overheating iPhone rest HOW IT WORKS 1. Scan — the app analyzes photos, videos, contacts and more 2. Review — you choose what goes; nothing is deleted without you 3. Clean — reclaim gigabytes in seconds FREE EVERY DAY Clean a set of items daily for free, and watch a short ad for extra deletions. Ultimate Cleaner Pro removes all limits and all ads. Ultimate Cleaner Pro (subscription): Ultimate Cleaner Pro unlocks all features of the app. Payment is charged to your Apple ID at confirmation. Subscription auto-renews unless canceled at least 24 hours before the period ends. Manage in Settings > Apple ID > Subscriptions. Privacy Policy: https://sites.google.com/view/ultimate-cleaner/privacy-policy Terms of Use: https://sites.google.com/view/ultimate-cleaner/terms-of-use
Screenshots
Verdict
The clearest difference is review sentiment: Ultimate Cleaner at 100% against MailCat's 0%. Ultimate Cleaner also leads on price (Free vs $3.99) and rating (5.0 vs 1.0). MailCat's advantage is in-app purchases (none vs 3) and ads (none vs shown). On 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
Ultimate Cleaner is free to download; MailCat costs $3.99 up front. Ultimate Cleaner sells 3 in-app purchases, starting at $4.99 per 7 days. MailCat asks for nothing beyond the download.
Ultimate Cleaner holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: Ultimate Cleaner has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of MailCat's written reviews are positive against 100% of Ultimate Cleaner's.
MailCat ships an update every 4 months, Ultimate Cleaner every 10 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | MailCat | Ultimate Cleaner |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 1.0 (1 ratings) | 5.0 (7 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 7 — better |
| Update frequency | Every 4 months | Every 10 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | Seimitsusakufu LLC | Nataliia Novykova |
Customer experience
MailCat
Ultimate Cleaner
In-app purchases
MailCat
No in-app purchases
Ultimate Cleaner
- Weekly Premium$4.997 Days
- Monthly Premium Access$5.991 Month
- Premium Ultimate Cleaner3 Days trial$34.991 Year









