Prompter Duo vs SpamBlocker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prompter Duo
This iPad-exclusive application functions as both a camera and speech teleprompter, enabling smooth script scrolling for presentations and filming. It offers a compact, portable solution for various speaking and recording needs, integrating with hardware for a complete prompter system.
- Camera and speech prompter
- Smoothly scrolling scripts
- Count down function
- Inverted text display
- Remote control operation
- Dropbox compatibility
- Voice recording
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The World's First! Introducing the Revolutionary New Prompter System, "Prompter Duo"! Serving as both a camera prompter and speech prompter, we are happy to introduce an iPad-exclusive application that will surpass any expectations you may have, even of high-priced prompters! This breakthrough development is a full Prompter System, including both hardware and software. For those who have been left wanting by previous prompters, with cries such as "I'm disappointed by such poor usability," or "There are so many expensive options, but the cost-performance ratio is so low," we at PAGE ONE CO., LTD are here to help. Our Prompter System is a major breakthrough that will solve all of these problems. By combining our iPad application "Prompter Duo" and our exclusive hardware, a single piece of hardware can act as both a camera and speech prompter, forming the world's first ever Prompter System. Anyone with an iPad can take advantage of this system at no additional cost, and there is no need to have an extra PC or even a power supply handy. Compact and easy to carry, whether for personal or business use, this prompter is ready for any situation. Most of all, it will serve as the perfect support system for your speech, all at a competitive price. PAGE ONE is a developer and manufacturer of prompters, ranked number one in market share in Japan. Starting with NHK in 1995, our systems have been installed in the offices of broadcasters and large firms for years. -------------------------------------------------- The "Prompter Duo" application is an iPad-exclusive prompter that allows for simple creation of smoothly scrolling scripts. It excels as the perfect partner for anyone who may need to give a speech or presentation, including those involved in the filming of commercials, teachers and lecturers, students, event hosts, conference presenters, those recording movies for submission on the Internet, those filming merchandise advertising for e-commerce sites, and so on. "The supporting force behind your every speech!" Main Functions ・Count Down Function (ON/OFF, seconds) ・Display Direction (automatic, vertical, horizontal) ・Inverted Text Display (allows for use of half-mirrored speech and camera prompters) ・Consecutive Playback ・Automatic Start ・Scroll Speed (allows for realtime editing with locater display) ・Marker display ・Multiple Fonts ・Multiple Font Sizes ・Multiple Font Colors ・Background Colors ・Display Screen Editing (Editor Mode/Display Screen Mode) ・Setting of Cue Point (swipe to switch cue points) ・Voice recording ・Remote control operation using the dedicated remote control app "Duo Remote" Dropbox Compatibility Feature (Use Dropbox to acquire and share text) Allows for direct input, download, and sending of text via e-mail. Support Page http://www.pageone.co.jp/prompter/duo/support/ Page One Website http://www.pageone.co.jp/prompter/prompter_index.html
SpamBlocker
This app helps manage unwanted emails by reassigning spam mailboxes and filtering incoming messages. It uses machine learning and rule-based systems to identify and block junk mail, supporting IMAP/POP3 accounts. It does not have mail sending capabilities.
- Spam/Trash mailbox reassignment
- Machine learning spam filtering
- Rule-based filtering (sender, subject)
- IMAP/POP3 support
- HTML image blocking
- Multi-account support
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■SpamBlocker supports Spam/Trash mailbox’s reassignment. Some (IMAP) mail servers support a machine learning spam filtering by using the mail data in the spam mailbox. If the spam mailbox matches between SpamBlocker and the mail server, SpamBlocker can feedback its spam filtering result to the mail server. Then the spam mail traffic can be reduced. ■SpamBlocker provides a spam filtering feature SpamBlocker(the usage is explained at the online help in the App) can filter out spams(junk mails) from the incoming mail messages by a spam filter which is generated by the SpamBlocker's built-in machine learning engine. SpamBlocker also supports 'rule based' filtering by specifying "sender's mail address" or "subject"'s substring. SpamBlocker supports IMAP/POP3 and can access only Inbox, spam box, trash box. SpamBlocker has no mail sending facility. As for the POP3 mail filtering, SpamBlocker has to get started before other mailers, otherwise spams will be downloaded to other mailers because POP3 has no synchronization mechanism . SpamBlocker supports HTML image blocking. SMS/MMS are not supported. SpamBlocker adapts the advertising free application model, but it has no resident toolbar, so the client area with an advertisement banner isn't narrower than other standard iOS applications. ■Main Features: •Fast machine learning engine optimized for a mobile device ◦Learn ham and spam mail messages to generate a spam filter ◦Spam filtering time is very short compared with mail messages downloading time. ◦Multi-language. In this version, only English and Japanese are supported. European languages will be OK if it's based on alphabets. ◦Multi-account ■How to connect to an mail server: To connect an 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 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 the navigation bar to move around mailboxes * Move/Delete/Mark mail messages by the toolbar on the navigation bar * Tap/Swipe the navigation bar to turn over mail messages * Swipe To POP3 server to move back a mail to POP3 server. * Add a mail to the blacklist/spam learning data by swiping a cell ■Spam filtering: SpamBlocker 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, SpamBlocker is ready to start judging which mail is spam or not. Set the spam filter switch on the account setting if you want to start the spamfiltering. 8. Check the filtering result on Monitor. 9. Correct errors and 'Pull down to Refresh" or "Long press on the navigation bar", re-learning starts and your spam filter gets smarter. Repeat the steps(8-9) until no errors are found. ■Spam Rule Filtering: Please don't forget about turning on "Spam Rule switch" at the account setting after setting rules. ■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 ■Copyright: Some of icons in this software are designed by Icons8 (http://icons8.com)
Screenshots
Verdict
The clearest difference is rating: Prompter Duo at 4.1 against SpamBlocker's 2.8. Prompter Duo also leads on in-app purchases (none vs 1) and review sentiment (33% vs 14%). SpamBlocker's advantage is update cadence (every 3 months vs every 10 months). On price, ratings volume, ads and monetization model 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
Both are free to download. SpamBlocker sells 1 one-off in-app purchase. Prompter Duo asks for nothing beyond the download.
Prompter Duo holds the better App Store score, 4.1 against 2.8. Both are backed by a comparable volume of ratings — 9 and 6 respectively. Written reviews point the same way: 33% of Prompter Duo's written reviews are positive against 14% of SpamBlocker's.
Prompter Duo ships an update every 10 months, SpamBlocker every 3 months. The most recent releases landed on June 5, 2026 and June 25, 2026 respectively.
| Parameter | Prompter Duo | SpamBlocker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (9 ratings) — better | 2.8 (6 ratings) |
| Positive reviews | 33.3% of reviews — better | 13.9% of reviews |
| Number of ratings | 9 — better | 6 |
| Update frequency | Every 10 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 10.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 41 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Page One Co., Ltd. | Seimitsusakufu LLC |
Customer experience
Prompter Duo
SpamBlocker
In-app purchases
Prompter Duo
No in-app purchases
SpamBlocker
- Remove Ad&Limitation$0.99
Questions
Is Prompter Duo free?
Is SpamBlocker free?
Which has better reviews, Prompter Duo or SpamBlocker?
Do Prompter Duo or SpamBlocker have ads?
Which is updated more often, Prompter Duo or SpamBlocker?
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