# Idea Think vs Authenticator

The clearest difference is rating: Idea Think at 5.0 against Authenticator's 4.5. Idea Think also leads on monetization model (free vs free with in-app purchases) and iOS requirement (13.0 vs 17.0). Authenticator's advantage is device support (4 vs 2). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Idea Think sells 1 one-off in-app purchase and Authenticator sells 3 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Idea Think holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Idea Think ships an update every 5 days, Authenticator weekly. Both last shipped on September 19, 2026.

## The numbers

| Metric | Idea Think | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/idea-think-thought-organizer/id6760612399/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/authenticator-2fa-code-and-otp/id6769224166/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 30 MB | 36 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [Man Chi CHoi](https://appshunter.io/developer/1804620702) | [志兵 袁](https://appshunter.io/developer/6779040430) |

## What reviewers say

### Idea Think

[App page](https://appshunter.io/ios/app/idea-think-thought-organizer/id6760612399)

Capture, organize, and visualize your thoughts with a mind mapping tool. Branch ideas naturally, search your entire library, and export your thinking as PDFs. Keep your ideas private and offline.

**Highlights:** Capture ideas in one tap, Unlimited branching, Interactive Tree Map view, Search by text or tag, Export as PDF, Private and offline storage

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IdeaThinkPro | $1.99 | one-time |


### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-2fa-code-and-otp/id6769224166)

This app secures your online accounts with 2FA codes, a password manager, and a secure browser. It offers iCloud sync, Apple Watch support, and Face ID protection for comprehensive account security.

**Highlights:** 2FA authentication with TOTP, Password vault with local encryption, Strong password generator, Built-in secure browser, iCloud sync and cloud recovery, Apple Watch support, Face ID/password protection

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $5.99 | per 7 days |
| Yearly | $17.99 | per year |
| Lifetime | Free | one-time |


## Frequently asked questions

### Is Idea Think free?

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

### Is Authenticator free?

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

### Which has better reviews, Idea Think or Authenticator?

Idea Think is rated higher. Idea Think averages 5.0 out of 5 from 1 ratings, while Authenticator averages 4.5 from 2 ratings.

### Do Idea Think or Authenticator have ads?

Neither Idea Think nor Authenticator shows ads.

### Which is updated more often, Idea Think or Authenticator?

Idea Think ships an update every 5 days, and Authenticator weekly. Most recently, Idea Think was updated on September 19, 2026 and Authenticator on September 19, 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.*