# BTG IOT HD vs Otterfile

The clearest difference is in-app purchases: BTG IOT HD at none against Otterfile's 3. BTG IOT HD also leads on iOS requirement (14.0 vs 17.0). Otterfile's advantage is update cadence (every 2 months vs every 19 months). On price, ads and device support there is nothing between them.

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

BTG IOT HD ships an update every 19 months, Otterfile every 2 months. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | BTG IOT HD | Otterfile |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 2 months** |
| Size | 204 MB | 120 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [bolide](https://appshunter.io/developer/373005177) | [宁 权](https://appshunter.io/developer/1710975082) |

## What reviewers say

### BTG IOT HD

[App page](https://appshunter.io/ios/app/btg-iot-hd/id6443791172)

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

**In-app purchases:** none


### Otterfile

[App page](https://appshunter.io/ios/app/otterfile/id6760924129)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Month Purchase | $0.99 | per month |
| Year Purchase | $6.99 | per year |
| Lifetime Prucahse | $9.99 | one-time |


## Frequently asked questions

### Is BTG IOT HD free?

BTG IOT HD is free to download, with no in-app purchases.

### Is Otterfile free?

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

### Do BTG IOT HD or Otterfile have ads?

Neither BTG IOT HD nor Otterfile shows ads.

### Which is updated more often, BTG IOT HD or Otterfile?

BTG IOT HD ships an update every 19 months, and Otterfile every 2 months. Most recently, BTG IOT HD was updated on November 3, 2026 and Otterfile on November 9, 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.*