# SignPLUS vs AlphaFlow Invest

The clearest difference is in-app purchases: SignPLUS at none against AlphaFlow Invest's 1. SignPLUS also leads on ads (none vs shown). AlphaFlow Invest's advantage is update cadence (every 2 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. AlphaFlow Invest sells 1 in-app purchase, starting at $1.99 per month. SignPLUS asks for nothing beyond the download.

SignPLUS ships an update every 3 weeks, AlphaFlow Invest every 2 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | SignPLUS | AlphaFlow Invest |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Free | — |
| Size | 29 MB | 92 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Korea Information Certificate Authority Inc.](https://appshunter.io/developer/434192206) | [Sangbae Han](https://appshunter.io/developer/1895020991) |

## What reviewers say

### SignPLUS

[App page](https://appshunter.io/ios/app/signplus/id6444506543)

This app provides 2-factor authentication issuance and verification services for iOS devices. Securely manage your authentication needs directly from your smartphone.

**Highlights:** 2-factor authentication issuance, 2-factor authentication verification, 2-factor authentication management, QR code recognition, Face ID authentication, Push notifications for OTP

**In-app purchases:** none


### AlphaFlow Invest

[App page](https://appshunter.io/ios/app/alphaflow-invest/id6784160193)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AlphaFlow Pro (Monthly) | $1.99 | per month |


## Frequently asked questions

### Is SignPLUS free?

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

### Is AlphaFlow Invest free?

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

### Do SignPLUS or AlphaFlow Invest have ads?

AlphaFlow Invest shows ads; SignPLUS does not.

### Which is updated more often, SignPLUS or AlphaFlow Invest?

SignPLUS ships an update every 3 weeks, and AlphaFlow Invest every 2 days. Most recently, SignPLUS was updated on November 3, 2026 and AlphaFlow Invest on November 5, 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.*