# RFID vs Kalendoo

The clearest difference is update cadence: RFID at every 4 weeks against Kalendoo's every 3 months. RFID also leads on iOS requirement (13.0 vs 16.4). 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.

RFID ships an update every 4 weeks, Kalendoo every 3 months. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | RFID | Kalendoo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/rfid-scanr/id6447556051/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 3 months |
| Size | 43 MB | 36 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [BONbLOC Inc](https://appshunter.io/developer/1629978278) | [Jules DELESSE](https://appshunter.io/developer/1811144878) |

## What reviewers say

### RFID

[App page](https://appshunter.io/ios/app/rfid-scanr/id6447556051)

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

**In-app purchases:** none


### Kalendoo

[App page](https://appshunter.io/ios/app/kalendoo/id6780181027)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RFID free?

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

### Is Kalendoo free?

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

### Do RFID or Kalendoo have ads?

Neither RFID nor Kalendoo shows ads.

### Which is updated more often, RFID or Kalendoo?

RFID ships an update every 4 weeks, and Kalendoo every 3 months. Most recently, RFID was updated on October 24, 2026 and Kalendoo on October 8, 2026.

---

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