# Cipher vs Doomsday Trainer

The clearest difference is review sentiment: Cipher at 67% against Doomsday Trainer's 0%. Cipher also leads on rating (5.0 vs 4.0). Doomsday Trainer's advantage is price (Free vs $2.99) and update cadence (every 5 days vs every 4 months). On ratings volume, ads and in-app purchases there is nothing between them.

Doomsday Trainer is free to download; Cipher costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Cipher holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 67% of Cipher's written reviews are positive against 0% of Doomsday Trainer's.

Cipher ships an update every 4 months, Doomsday Trainer every 5 days. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Cipher | Doomsday Trainer |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cipher/id1505289366/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/doomsday-trainer/id6760719687/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | Paid | **Free** |
| Size | 38 MB | 15 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TN-TECHNOLOGY](https://appshunter.io/developer/558528402) | [Maarten Claessen](https://appshunter.io/developer/1885901059) |

## What reviewers say

### Cipher

[App page](https://appshunter.io/ios/app/cipher/id1505289366)

This app allows users to easily encode and decode messages using various secret codes. It offers offline functionality and printable translation tables for decoding without the app. Ideal for educational puzzles, treasure hunts, and creative communication.

**Highlights:** Encode and decode messages, 12+ secret codes available, Offline functionality, Printable translation tables, Export encoded messages as images, Suitable for educational puzzles

**Features:** Vision Pro support

**In-app purchases:** none


### Doomsday Trainer

[App page](https://appshunter.io/ios/app/doomsday-trainer/id6760719687)

Master the Doomsday Algorithm to instantly calculate the day of the week for any historical date. Engage in timed challenges, compete against others, and practice various calculation methods to improve your speed and accuracy.

**Highlights:** Doomsday Algorithm calculation, Timed streak challenges, 1-on-1 live battles, Multiple training methods, Targeted component drills, Step-by-step tutorial

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

**In-app purchases:** none


## Frequently asked questions

### Is Cipher free?

Cipher costs $2.99, with no in-app purchases.

### Is Doomsday Trainer free?

Doomsday Trainer is free to download, with no in-app purchases.

### Which has better reviews, Cipher or Doomsday Trainer?

Cipher is rated higher. Cipher averages 5.0 out of 5 from 1 ratings, while Doomsday Trainer averages 4.0 from 2 ratings.

### Do Cipher or Doomsday Trainer have ads?

Neither Cipher nor Doomsday Trainer shows ads.

### Which is updated more often, Cipher or Doomsday Trainer?

Cipher ships an update every 4 months, and Doomsday Trainer every 5 days. Most recently, Cipher was updated on October 5, 2026 and Doomsday Trainer on September 30, 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.*