# HattiWatt vs RR Hub

The clearest difference is iOS requirement: RR Hub at 15.1 against HattiWatt's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

HattiWatt ships an update every 3 weeks, RR Hub monthly. The most recent releases landed on September 9, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | HattiWatt | RR Hub |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 2 MB | 35 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Pramell Oy](https://appshunter.io/developer/1581797918) | [Risto Reipas](https://appshunter.io/developer/1706504184) |

## What reviewers say

### HattiWatt

[App page](https://appshunter.io/ios/app/hattiwatt/id6443710171)

**In-app purchases:** none


### RR Hub

[App page](https://appshunter.io/ios/app/rr-hub/id6465250787)

**In-app purchases:** none


## Frequently asked questions

### Is HattiWatt free?

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

### Is RR Hub free?

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

### Do HattiWatt or RR Hub have ads?

Neither HattiWatt nor RR Hub shows ads.

### Which is updated more often, HattiWatt or RR Hub?

HattiWatt ships an update every 3 weeks, and RR Hub monthly. Most recently, HattiWatt was updated on September 9, 2026 and RR Hub on September 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.*