# Volume Diary vs kontina

The clearest difference is update cadence: kontina at every 2 months against Volume Diary's every 16 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Volume Diary ships an update every 16 months, kontina every 2 months. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Volume Diary | kontina |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/volume-diary/id666529852/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 3 MB | 62 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Vincenzo Tschinke](https://appshunter.io/developer/666529855) | [Rocketlane Medical Ventures GmbH](https://appshunter.io/developer/1562318285) |

## What reviewers say

### Volume Diary

[App page](https://appshunter.io/ios/app/volume-diary/id666529852)

Track your fluid intake and voiding patterns with this digital diary. Generate shareable text and PDF reports for easy analysis and sharing with healthcare professionals.

**Highlights:** Record fluid intake, Log voiding data, Generate text reports, Create PDF reports, Email reports, View and elaborate data in other apps

**In-app purchases:** none


### kontina

[App page](https://appshunter.io/ios/app/kontina/id1616830349)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Volume Diary free?

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

### Is kontina free?

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

### Do Volume Diary or kontina have ads?

Neither Volume Diary nor kontina shows ads.

### Which is updated more often, Volume Diary or kontina?

Volume Diary ships an update every 16 months, and kontina every 2 months. Most recently, Volume Diary was updated on October 18, 2026 and kontina on October 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.*