# Day2Day vs Guttmann

The clearest difference is update cadence: Day2Day at fortnightly against Guttmann's every 6 weeks. Guttmann's advantage is iOS requirement (13.0 vs 17.5). 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.

Day2Day ships an update fortnightly, Guttmann every 6 weeks. The most recent releases landed on September 9, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Day2Day | Guttmann |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Size | 2 MB | 53 MB |
| Requires iOS | 17.5 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Coloplast Productos Medicos S.A](https://appshunter.io/developer/1112345915) | [FUNDACIO INSTITUT GUTTMANN](https://appshunter.io/developer/1255407329) |

## What reviewers say

### Day2Day

[App page](https://appshunter.io/ios/app/day2day/id1107911529)

**Features:** macOS Compatibility

**In-app purchases:** none


### Guttmann

[App page](https://appshunter.io/ios/app/guttmann/id1598104042)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Day2Day free?

Day2Day is free to download, with no in-app purchases.

### Is Guttmann free?

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

### Do Day2Day or Guttmann have ads?

Neither Day2Day nor Guttmann shows ads.

### Which is updated more often, Day2Day or Guttmann?

Day2Day ships an update fortnightly, and Guttmann every 6 weeks. Most recently, Day2Day was updated on September 9, 2026 and Guttmann on September 17, 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.*