# Auer Twight vs Red Diary

The clearest difference is in-app purchases: Auer Twight at none against Red Diary's 2. Red Diary's advantage is update cadence (every 3 days vs every 17 months) and ratings volume (9 vs 1). On price, rating, ads and device support there is nothing between them.

Both are free to download. Red Diary sells 2 in-app purchases, starting at $0.99 per month. Auer Twight asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Auer Twight against 5.0 for Red Diary. That said, the two scores are not equally well evidenced: Red Diary has 9 ratings behind it against 1, so its average is the more settled of the two.

Auer Twight ships an update every 17 months, Red Diary every 3 days. The most recent releases landed on October 12, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Auer Twight | Red Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/auer-twight/id6742798864/reviews) | [5.0 (9 ratings)](https://appshunter.io/ios/app/red-diary-period-tracker/id6767368239/reviews) |
| Number of ratings | 1 | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 3 days** |
| Monetization | **Free** | Freemium |
| Size | 0 MB | 8 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Uri Fridman](https://appshunter.io/developer/1612958936) | [RUBINS DORMEUS](https://appshunter.io/developer/1884865930) |

## What reviewers say

### Auer Twight

[App page](https://appshunter.io/ios/app/auer-twight/id6742798864)

This app helps you stay focused on your primary goal by displaying it prominently on your device's home or lock screen. It uses a widget to keep your objective visible at all times.

**Highlights:** Goal widget for home and lock screens, Keeps your primary objective visible, Inspired by climber Mark Twight's philosophy, Simple and focused design

**In-app purchases:** none


### Red Diary

[App page](https://appshunter.io/ios/app/red-diary-period-tracker/id6767368239)

This app analyzes your symptoms, mood, energy, sleep, and activity to provide personalized insights and daily guidance tailored to your cycle phases. It offers a body weather forecast and smart recommendations for exercise, nutrition, and self-care.

**Highlights:** Personalized cycle insights, Smart daily guidance, Body weather forecast, Cycle tracking modes (fertility, pregnancy, birth control), Symptom and mood logging, HealthKit integration, Apple Watch companion app

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $0.99 | per month |
| Premium Annual | $4.99 | per year |


## Frequently asked questions

### Is Auer Twight free?

Auer Twight is free to download, with no in-app purchases.

### Is Red Diary free?

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

### Which has better reviews, Auer Twight or Red Diary?

Auer Twight and Red Diary are both rated 5.0 out of 5 on the App Store, from 1 and 9 ratings respectively.

### Do Auer Twight or Red Diary have ads?

Neither Auer Twight nor Red Diary shows ads.

### Which is updated more often, Auer Twight or Red Diary?

Auer Twight ships an update every 17 months, and Red Diary every 3 days. Most recently, Auer Twight was updated on October 12, 2026 and Red Diary on October 16, 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.*