# Rot13 (Unix Flashback) vs Bulk Temp Mail

The clearest difference is rating: Bulk Temp Mail at 4.5 against Rot13 (Unix Flashback)'s 3.7. Bulk Temp Mail also leads on update cadence (every 3 months vs every 26 months) and iOS requirement (13.0 vs 18.0). Rot13 (Unix Flashback)'s advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Bulk Temp Mail holds the better App Store score, 4.5 against 3.7. Both are backed by a comparable volume of ratings — 3 and 8 respectively.

Rot13 (Unix Flashback) ships an update every 26 months, Bulk Temp Mail every 3 months. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Rot13 (Unix Flashback) | Bulk Temp Mail |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/rot13-unix-flashback/id995122989/reviews) | **[4.5 (8 ratings)](https://appshunter.io/ios/app/bulk-temp-mail/id6468552848/reviews)** |
| Number of ratings | 3 | **8** |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 26 months | **Every 3 months** |
| Monetization | **Free** | Ad-supported |
| Size | 1 MB | 30 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Macplugins](https://appshunter.io/developer/364191414) | [DREAMER NETWORK CO., LTD](https://appshunter.io/developer/1613694335) |

## What reviewers say

### Rot13 (Unix Flashback)

[App page](https://appshunter.io/ios/app/rot13-unix-flashback/id995122989)

This utility app performs a simple letter substitution cipher, rotating English letters by 13 positions. It's useful for obscuring text like spoilers or sensitive content from casual viewers. You can type directly, share text from other apps, or integrate it with shortcuts.

**Highlights:** Letter substitution cipher, Rotate by 13 positions, Hide spoilers and sensitive content, Share text from other apps, Integrate with shortcuts

**Features:** macOS Compatibility

**In-app purchases:** none


### Bulk Temp Mail

[App page](https://appshunter.io/ios/app/bulk-temp-mail/id6468552848)

Quickly generate and manage multiple temporary email addresses for registrations and confirmations. This utility app offers a user-friendly interface for real-time checking and flexible management of disposable inboxes, enhancing privacy and preventing spam.

**Highlights:** Bulk email creation, Real-time checking, Flexible management, Swift account-free creation, User-friendly interface, Optimized for multiple emails

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Rot13 (Unix Flashback) free?

Rot13 (Unix Flashback) is free to download, with no in-app purchases.

### Is Bulk Temp Mail free?

Bulk Temp Mail is free to download, with no in-app purchases.

### Which has better reviews, Rot13 (Unix Flashback) or Bulk Temp Mail?

Bulk Temp Mail is rated higher. Rot13 (Unix Flashback) averages 3.7 out of 5 from 3 ratings, while Bulk Temp Mail averages 4.5 from 8 ratings.

### Do Rot13 (Unix Flashback) or Bulk Temp Mail have ads?

Bulk Temp Mail shows ads; Rot13 (Unix Flashback) does not.

### Which is updated more often, Rot13 (Unix Flashback) or Bulk Temp Mail?

Rot13 (Unix Flashback) ships an update every 26 months, and Bulk Temp Mail every 3 months. Most recently, Rot13 (Unix Flashback) was updated on November 11, 2026 and Bulk Temp Mail on November 3, 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.*