# Pipe Calc vs 2FA Authenticator

Pipe Calc and 2FA Authenticator are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Pipe Calc sells 1 one-off in-app purchase and 2FA Authenticator sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Pipe Calc ships an update fortnightly, 2FA Authenticator every 3 weeks. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Pipe Calc | 2FA Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 28 MB | 27 MB |
| Requires iOS | **15.1** | 16 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Transparent Blue Water LLC](https://appshunter.io/developer/1847968351) | [Aryan Catar](https://appshunter.io/developer/6818066215) |

## What reviewers say

### Pipe Calc

[App page](https://appshunter.io/ios/app/pipe-calc-hydraulic-network/id6758810548)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pipe Calc Pro | $9.99 | one-time |


### 2FA Authenticator

[App page](https://appshunter.io/ios/app/2fa-authenticator-secure-otp/id6818066213)

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $6.99 | per 7 days |
| Monthly | $19.99 | per month |
| Yearly | $49.99 | per year |


## Frequently asked questions

### Is Pipe Calc free?

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

### Is 2FA Authenticator free?

2FA Authenticator is free to download, with in-app purchases available.

### Do Pipe Calc or 2FA Authenticator have ads?

Neither Pipe Calc nor 2FA Authenticator shows ads.

### Which is updated more often, Pipe Calc or 2FA Authenticator?

Pipe Calc ships an update fortnightly, and 2FA Authenticator every 3 weeks. Most recently, Pipe Calc was updated on October 31, 2026 and 2FA Authenticator on November 10, 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.*