# OT Subnet Calculator vs DevIndex

The clearest difference is in-app purchases: DevIndex at none against OT Subnet Calculator's 1. DevIndex also leads on update cadence (weekly vs every 2 months) and iOS requirement (15.1 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. OT Subnet Calculator sells 1 one-off in-app purchase. DevIndex asks for nothing beyond the download.

OT Subnet Calculator ships an update every 2 months, DevIndex weekly. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | OT Subnet Calculator | DevIndex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 7 MB | 37 MB |
| Requires iOS | 26.2 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dominik Gausmann](https://appshunter.io/developer/1870320985) | [Dao Duong](https://appshunter.io/developer/1851400410) |

## What reviewers say

### OT Subnet Calculator

[App page](https://appshunter.io/ios/app/ot-subnet-calculator/id6758581610)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IP Calc Profi Features | $0.99 | one-time |


### DevIndex

[App page](https://appshunter.io/ios/app/devindex/id6758738242)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OT Subnet Calculator free?

OT Subnet Calculator is free to download, with in-app purchases available.

### Is DevIndex free?

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

### Do OT Subnet Calculator or DevIndex have ads?

Neither OT Subnet Calculator nor DevIndex shows ads.

### Which is updated more often, OT Subnet Calculator or DevIndex?

OT Subnet Calculator ships an update every 2 months, and DevIndex weekly. Most recently, OT Subnet Calculator was updated on October 5, 2026 and DevIndex 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.*