# rOb.by vs JCAlerts

The clearest difference is update cadence: JCAlerts at every 8 days against rOb.by's every 5 months. rOb.by's advantage is iOS requirement (12.0 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.

rOb.by ships an update every 5 months, JCAlerts every 8 days. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | rOb.by | JCAlerts |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 8 days** |
| Size | 39 MB | 10 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [texTomatic AG](https://appshunter.io/developer/1503319921) | [John Choi](https://appshunter.io/developer/1554167893) |

## What reviewers say

### rOb.by

[App page](https://appshunter.io/ios/app/robby/id1503319922)

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

**In-app purchases:** none


### JCAlerts

[App page](https://appshunter.io/ios/app/jcalerts/id6473765765)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is rOb.by free?

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

### Is JCAlerts free?

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

### Do rOb.by or JCAlerts have ads?

Neither rOb.by nor JCAlerts shows ads.

### Which is updated more often, rOb.by or JCAlerts?

rOb.by ships an update every 5 months, and JCAlerts every 8 days. Most recently, rOb.by was updated on October 10, 2026 and JCAlerts on September 30, 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.*