# KrakenSDR RDF vs eMeter Reader

The clearest difference is update cadence: eMeter Reader at every 2 weeks against KrakenSDR RDF's every 2 months. eMeter Reader also leads on iOS requirement (15.1 vs 17.0). 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.

KrakenSDR RDF ships an update every 2 months, eMeter Reader every 2 weeks. The most recent releases landed on November 4, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | KrakenSDR RDF | eMeter Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 73 MB | 37 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KrakenRF Inc](https://appshunter.io/developer/1750892327) | [Raltech Solutions](https://appshunter.io/developer/1847668124) |

## What reviewers say

### KrakenSDR RDF

[App page](https://appshunter.io/ios/app/krakensdr-rdf/id6504110939)

**Features:** macOS Compatibility

**In-app purchases:** none


### eMeter Reader

[App page](https://appshunter.io/ios/app/emeter-reader/id6754286076)

**In-app purchases:** none


## Frequently asked questions

### Is KrakenSDR RDF free?

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

### Is eMeter Reader free?

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

### Do KrakenSDR RDF or eMeter Reader have ads?

Neither KrakenSDR RDF nor eMeter Reader shows ads.

### Which is updated more often, KrakenSDR RDF or eMeter Reader?

KrakenSDR RDF ships an update every 2 months, and eMeter Reader every 2 weeks. Most recently, KrakenSDR RDF was updated on November 4, 2026 and eMeter Reader 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.*