# KuCalc vs RssNotify

The clearest difference is in-app purchases: KuCalc at none against RssNotify's 3. KuCalc also leads on iOS requirement (11.0 vs 17.0). RssNotify's advantage is update cadence (weekly vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. RssNotify sells 3 in-app purchases, starting at $0.99 per month. KuCalc asks for nothing beyond the download.

KuCalc ships an update every 3 months, RssNotify weekly. The most recent releases landed on September 20, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | KuCalc | RssNotify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rssnotify/id6474471353/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 1 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Mineaki Sakatoku](https://appshunter.io/developer/1674976728) | [Signalgrid e.U.](https://appshunter.io/developer/1721703581) |

## What reviewers say

### KuCalc

[App page](https://appshunter.io/ios/app/kucalc/id6445941447)

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

**In-app purchases:** none


### RssNotify

[App page](https://appshunter.io/ios/app/rssnotify/id6474471353)

This app provides instant notifications for critical updates from multiple RSS feeds. It centralizes important technical infrastructure health information, eliminating the need for constant manual checks. Configure preferences easily and share alerts across up to five devices.

**Highlights:** Instant critical update notifications, Monitor multiple RSS feeds, Centralized technical infrastructure health, Intuitive configuration interface, Up to five devices per account, Cloud-based feed monitoring

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 Feeds | $0.99 | per month |
| 10 Feeds | $1.99 | per month |
| 15 Feeds | $2.99 | per month |


## Frequently asked questions

### Is KuCalc free?

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

### Is RssNotify free?

RssNotify is free to download, with in-app purchases available.

### Do KuCalc or RssNotify have ads?

Neither KuCalc nor RssNotify shows ads.

### Which is updated more often, KuCalc or RssNotify?

KuCalc ships an update every 3 months, and RssNotify weekly. Most recently, KuCalc was updated on September 20, 2026 and RssNotify on June 4, 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.*