# SDF vs Gain Wellness

The clearest difference is update cadence: Gain Wellness at fortnightly against SDF's every 4 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.

SDF ships an update every 4 months, Gain Wellness fortnightly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SDF | Gain Wellness |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Size | 42 MB | 57 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Colegio de Escribanos de la Ciudad de Buenos Aires](https://appshunter.io/developer/1185879051) | [Francisco Filippa](https://appshunter.io/developer/1830742370) |

## What reviewers say

### SDF

[App page](https://appshunter.io/ios/app/sdf/id6747388469)

**In-app purchases:** none


### Gain Wellness

[App page](https://appshunter.io/ios/app/gain-wellness/id6749487969)

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

**In-app purchases:** none


## Frequently asked questions

### Is SDF free?

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

### Is Gain Wellness free?

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

### Do SDF or Gain Wellness have ads?

Neither SDF nor Gain Wellness shows ads.

### Which is updated more often, SDF or Gain Wellness?

SDF ships an update every 4 months, and Gain Wellness fortnightly. Most recently, SDF was updated on October 28, 2026 and Gain Wellness on October 25, 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.*