# LoRaAMR vs SIDEN

The clearest difference is update cadence: SIDEN at every 7 months against LoRaAMR's every 27 months. LoRaAMR's advantage is iOS requirement (12.0 vs 18.0). 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.

LoRaAMR ships an update every 27 months, SIDEN every 7 months. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | LoRaAMR | SIDEN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 7 months** |
| Size | 28 MB | 77 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Chongqing ADDUNION Information Technology Co.,LTD](https://appshunter.io/developer/1614985326) | [VivoKey Japan LLC](https://appshunter.io/developer/1463916189) |

## What reviewers say

### LoRaAMR

[App page](https://appshunter.io/ios/app/loraamr/id1630690953)

**In-app purchases:** none


### SIDEN

[App page](https://appshunter.io/ios/app/siden/id6752128234)

**In-app purchases:** none


## Frequently asked questions

### Is LoRaAMR free?

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

### Is SIDEN free?

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

### Do LoRaAMR or SIDEN have ads?

Neither LoRaAMR nor SIDEN shows ads.

### Which is updated more often, LoRaAMR or SIDEN?

LoRaAMR ships an update every 27 months, and SIDEN every 7 months. Most recently, LoRaAMR was updated on October 16, 2026 and SIDEN on October 17, 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.*