# Watt vs DFA

The clearest difference is update cadence: DFA at every 2 weeks against Watt's every 2 months. DFA also leads on iOS requirement (13.0 vs 15.0). 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.

Watt ships an update every 2 months, DFA every 2 weeks. The most recent releases landed on September 2, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Watt | DFA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 60 MB | 61 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Watt-Training](https://appshunter.io/developer/1835357246) | [DFA](https://appshunter.io/developer/1865180851) |

## What reviewers say

### Watt

[App page](https://appshunter.io/ios/app/watt-training/id6751487775)

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

**In-app purchases:** none


### DFA

[App page](https://appshunter.io/ios/app/dfa/id6757193000)

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

**In-app purchases:** none


## Frequently asked questions

### Is Watt free?

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

### Is DFA free?

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

### Do Watt or DFA have ads?

Neither Watt nor DFA shows ads.

### Which is updated more often, Watt or DFA?

Watt ships an update every 2 months, and DFA every 2 weeks. Most recently, Watt was updated on September 2, 2026 and DFA on September 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*