# DoubleSafe vs iTwi

The clearest difference is price: DoubleSafe at Free against iTwi's $1.99. DoubleSafe also leads on in-app purchases (none vs 1). iTwi's advantage is iOS requirement (12.0 vs 15.0). On update cadence, ads and device support there is nothing between them.

DoubleSafe is free to download; iTwi costs $1.99 up front. iTwi sells 1 one-off in-app purchase. DoubleSafe asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 8 months. The most recent releases landed on August 25, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | DoubleSafe | iTwi |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[2.2 (5 ratings)](https://appshunter.io/ios/app/doublesafe/id951100842/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | Every 8 months |
| Monetization | Free | — |
| Size | 9 MB | 42 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Serverdata.Net, Inc.](https://appshunter.io/developer/636558397) | [丹丹 王](https://appshunter.io/developer/1636101439) |

## What reviewers say

### DoubleSafe

[App page](https://appshunter.io/ios/app/doublesafe/id951100842)

Enhance your online security with an extra layer of protection. This app provides two-factor authentication via push notifications or one-time passcodes to verify your identity during sign-ins.

**Highlights:** Two-factor authentication, Push notification approvals, One-time passcode generation, Enhanced account security, User account verification

**In-app purchases:** none


### iTwi

[App page](https://appshunter.io/ios/app/itwi/id1671839119)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $4.99 | one-time |


## Frequently asked questions

### Is DoubleSafe free?

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

### Is iTwi free?

iTwi costs $1.99, and also offers in-app purchases.

### Do DoubleSafe or iTwi have ads?

Neither DoubleSafe nor iTwi shows ads.

### Which is updated more often, DoubleSafe or iTwi?

DoubleSafe ships an update every 8 months, and iTwi every 8 months. Most recently, DoubleSafe was updated on August 25, 2026 and iTwi on September 8, 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.*