# SIGA vs Think & Action

The clearest difference is in-app purchases: SIGA at none against Think & Action's 2. Think & Action's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Think & Action sells 2 in-app purchases, starting at $1.99 per month. SIGA asks for nothing beyond the download.

SIGA ships an update every 4 months, Think & Action every 2 months. The most recent releases landed on September 26, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SIGA | Think & Action |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 29 MB | 41 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Envision Inversiones Limitada](https://appshunter.io/developer/1481643562) | [奇奇 郭](https://appshunter.io/developer/1696538006) |

## What reviewers say

### SIGA

[App page](https://appshunter.io/ios/app/siga-pass/id6475899042)

**Features:** macOS Compatibility

**In-app purchases:** none


### Think & Action

[App page](https://appshunter.io/ios/app/think-and-action/id6476620784)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly VIP | $1.99 | per month |
| Yearly VIP | $14.99 | per year |


## Frequently asked questions

### Is SIGA free?

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

### Is Think & Action free?

Think & Action is free to download, with in-app purchases available.

### Do SIGA or Think & Action have ads?

Neither SIGA nor Think & Action shows ads.

### Which is updated more often, SIGA or Think & Action?

SIGA ships an update every 4 months, and Think & Action every 2 months. Most recently, SIGA was updated on September 26, 2026 and Think & Action on October 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.*