# Outflow Diary vs Pee

The clearest difference is in-app purchases: Outflow Diary at none against Pee's 2. Pee's advantage is update cadence (every 2 days vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

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

Outflow Diary ships an update every 6 months, Pee every 2 days. The most recent releases landed on September 11, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Outflow Diary | Pee |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pee-ups/id6776003536/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 days** |
| Monetization | — | Freemium |
| Size | 6 MB | 48 MB |
| Requires iOS | **18.0** | 18.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 9+ |
| Developer | [FlyOver Solutions, LLC](https://appshunter.io/developer/1608073409) | [Hoverstone LLC](https://appshunter.io/developer/6776003538) |

## What reviewers say

### Outflow Diary

[App page](https://appshunter.io/ios/app/outflow-diary/id6737697386)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pee

[App page](https://appshunter.io/ios/app/pee-ups/id6776003536)

This app helps you build strength and stay hydrated by integrating simple exercises with your natural bathroom breaks. It uses habit stacking and frequent, low-intensity practice to build muscle without dedicated gym time.

**Highlights:** Log exercises with one tap, Track hydration and workout data, Competitive leaderboards, Apple Health integration, iOS widget and watchOS support, Habit stacking method

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

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


## Frequently asked questions

### Is Outflow Diary free?

Outflow Diary is free to download, with no in-app purchases.

### Is Pee free?

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

### Do Outflow Diary or Pee have ads?

Neither Outflow Diary nor Pee shows ads.

### Which is updated more often, Outflow Diary or Pee?

Outflow Diary ships an update every 6 months, and Pee every 2 days. Most recently, Outflow Diary was updated on September 11, 2026 and Pee on September 14, 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.*