# Prompter Duo vs SpamBlocker

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.

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.

## The numbers

| Metric | Prompter Duo | SpamBlocker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (9 ratings)](https://appshunter.io/ios/app/prompter-duo/id531286083/reviews)** | [2.8 (6 ratings)](https://appshunter.io/ios/app/spamblocker/id570617592/reviews) |
| Number of ratings | **9** | 6 |
| Positive reviews | **33.3% of reviews** | 13.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 41 MB | 7 MB |
| Requires iOS | **10.0** | 16.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Page One Co., Ltd.](https://appshunter.io/developer/531286086) | [Seimitsusakufu LLC](https://appshunter.io/developer/459361672) |

## What reviewers say

### Prompter Duo

[App page](https://appshunter.io/ios/app/prompter-duo/id531286083)

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.

**Highlights:** Camera and speech prompter, Smoothly scrolling scripts, Count down function, Inverted text display, Remote control operation, Dropbox compatibility, Voice recording

**Features:** macOS Compatibility

**In-app purchases:** none


### SpamBlocker

[App page](https://appshunter.io/ios/app/spamblocker/id570617592)

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.

**Highlights:** Spam/Trash mailbox reassignment, Machine learning spam filtering, Rule-based filtering (sender, subject), IMAP/POP3 support, HTML image blocking, Multi-account support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ad&Limitation | $0.99 | one-time |


## Frequently asked questions

### Is Prompter Duo free?

Prompter Duo is free to download, with no in-app purchases.

### Is SpamBlocker free?

SpamBlocker is free to download, with in-app purchases available.

### Which has better reviews, Prompter Duo or SpamBlocker?

Prompter Duo is rated higher. Prompter Duo averages 4.1 out of 5 from 9 ratings, while SpamBlocker averages 2.8 from 6 ratings.

### Do Prompter Duo or SpamBlocker have ads?

Neither Prompter Duo nor SpamBlocker shows ads.

### Which is updated more often, Prompter Duo or SpamBlocker?

Prompter Duo ships an update every 10 months, and SpamBlocker every 3 months. Most recently, Prompter Duo was updated on June 5, 2026 and SpamBlocker on June 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*