# MumuFit vs Red Diary

MumuFit and Red Diary are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. MumuFit sells 1 in-app purchase, starting at $3.99 per month and Red Diary sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

MumuFit ships an update daily, Red Diary every 3 days. Both last shipped on October 16, 2026.

## The numbers

| Metric | MumuFit | Red Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (9 ratings)](https://appshunter.io/ios/app/red-diary-period-tracker/id6767368239/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 days |
| Monetization | — | Freemium |
| Size | 45 MB | 8 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Ben Polley](https://appshunter.io/developer/1808276283) | [RUBINS DORMEUS](https://appshunter.io/developer/1884865930) |

## What reviewers say

### MumuFit

[App page](https://appshunter.io/ios/app/mumufit/id6744578994)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MumuFit Monthly Membership | $3.99 | per month |


### 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 MumuFit free?

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

### Is Red Diary free?

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

### Do MumuFit or Red Diary have ads?

Neither MumuFit nor Red Diary shows ads.

### Which is updated more often, MumuFit or Red Diary?

MumuFit ships an update daily, and Red Diary every 3 days. Most recently, MumuFit was updated on October 16, 2026 and Red Diary on October 16, 2026.

---

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