# Outflow Diary vs FireCal

The clearest difference is in-app purchases: Outflow Diary at none against FireCal's 2. FireCal's advantage is update cadence (fortnightly vs every 6 months) and iOS requirement (16.4 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. FireCal sells 2 in-app purchases, starting at $3.99 per month. Outflow Diary asks for nothing beyond the download.

Outflow Diary ships an update every 6 months, FireCal fortnightly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Outflow Diary | FireCal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Fortnightly** |
| Size | 6 MB | 40 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [FlyOver Solutions, LLC](https://appshunter.io/developer/1608073409) | [Jia Chi Kwan](https://appshunter.io/developer/1896483071) |

## What reviewers say

### Outflow Diary

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

**Features:** macOS Compatibility

**In-app purchases:** none


### FireCal

[App page](https://appshunter.io/ios/app/firecal-ai-calorie-tracker/id6767517533)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FireCal Pro Monthly | $3.99 | per month |
| FireCal Pro Yearly | $29.99 | per year |


## Frequently asked questions

### Is Outflow Diary free?

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

### Is FireCal free?

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

### Do Outflow Diary or FireCal have ads?

Neither Outflow Diary nor FireCal shows ads.

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

Outflow Diary ships an update every 6 months, and FireCal fortnightly. Most recently, Outflow Diary was updated on October 25, 2026 and FireCal on October 28, 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.*