# FlyCalm vs Gulpo

The clearest difference is in-app purchases: FlyCalm at none against Gulpo's 3. FlyCalm also leads on device support (3 vs 1) and iOS requirement (13.4 vs 26.1). Gulpo's advantage is update cadence (every 2 days vs every 2 weeks). On price and ads there is nothing between them.

Both are free to download. Gulpo sells 3 in-app purchases, starting at $1.99 per month. FlyCalm asks for nothing beyond the download.

FlyCalm ships an update every 2 weeks, Gulpo every 2 days. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | FlyCalm | Gulpo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/gulpo/id6800241908/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 136 MB | 31 MB |
| Requires iOS | **13.4** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Juan Camilo Yepes Celis](https://appshunter.io/developer/6790434973) | [Raja Vijayaraman](https://appshunter.io/developer/562575890) |

## What reviewers say

### FlyCalm

[App page](https://appshunter.io/ios/app/flycalm-calm-flying/id6790434971)

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

**In-app purchases:** none


### Gulpo

[App page](https://appshunter.io/ios/app/gulpo/id6800241908)

This app helps you track your hydration by visualizing your progress and offering flexible logging methods. It accounts for water content in various beverages and adjusts goals based on factors like weather and workouts. Your data is kept private and synced via iCloud.

**Highlights:** Pace line visualization for hydration progress, Flexible logging: manual, voice, camera, bottle tracking, Accounts for water content in various beverages, Dynamic goal adjustment based on weather and workouts, Private data storage and iCloud syncing

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $9.99 | per year |
| Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is FlyCalm free?

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

### Is Gulpo free?

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

### Do FlyCalm or Gulpo have ads?

Neither FlyCalm nor Gulpo shows ads.

### Which is updated more often, FlyCalm or Gulpo?

FlyCalm ships an update every 2 weeks, and Gulpo every 2 days. Most recently, FlyCalm was updated on October 6, 2026 and Gulpo on October 12, 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.*