# Indigo vs Qatom Authenticator

The clearest difference is rating: Qatom Authenticator at 5.0 against Indigo's 4.4. Indigo's advantage is ratings volume (107 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Qatom Authenticator holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Indigo has 107 ratings behind it against 2, so its average is the more settled of the two.

Indigo ships an update every 4 weeks, Qatom Authenticator monthly. The most recent releases landed on September 24, 2026 and July 6, 2026 respectively.

## The numbers

| Metric | Indigo | Qatom Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (107 ratings)](https://appshunter.io/ios/app/indigo/id718235018/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/qatom-authenticator/id6670186053/reviews)** |
| Number of ratings | **107** | 2 |
| Positive reviews | 13.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 194 MB | 29 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Indigo Books & Music Inc.](https://appshunter.io/developer/718235021) | [TODAQ Financial Inc](https://appshunter.io/developer/1383372034) |

## What reviewers say

### Indigo

[App page](https://appshunter.io/ios/app/indigo/id718235018)

Explore a vast selection of books, gifts, and toys. Easily search millions of products, manage wish lists, and track your plum® rewards. Find nearby stores and check in-store availability.

**Highlights:** Shop books, gifts, and music, Search over 7 million products, Barcode scanner for item details, Create and share wish lists, Access plum® rewards and points, Track orders and view history, Find nearby stores and check availability

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast and intuitive interface
- 📚 Helpful book recommendations
- 💳 Integrated loyalty program

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🔑 Constant sign-in issues
- 🛒 Unreliable inventory and checkout
- 🔍 Poor search and filtering functionality
- 🔋 High battery consumption

**Reported bugs**

- Inability to complete purchases
- Disappearing cart and wishlist items
- Inconsistent performance across devices
- Outdated CAPTCHA system

**Requested features**

- Add books to wishlist from any page
- In-app store availability and stock check
- Apple Wallet integration for loyalty card
- Improved navigation and category browsing


### Qatom Authenticator

[App page](https://appshunter.io/ios/app/qatom-authenticator/id6670186053)

Enhance your online security and convenience for TAPP activities. Approve TAPP events directly from your mobile device to validate your intent and access linked assets. This two-factor verification system keeps your online activity and assets safe and secure.

**Highlights:** Two-factor verification, Approve TAPP events directly, Access verified assets, Manage TAPP passes and gift cards, Load verified assets to TAPP accounts

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Indigo free?

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

### Is Qatom Authenticator free?

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

### Which has better reviews, Indigo or Qatom Authenticator?

Qatom Authenticator is rated higher. Indigo averages 4.4 out of 5 from 107 ratings, while Qatom Authenticator averages 5.0 from 2 ratings.

### Do Indigo or Qatom Authenticator have ads?

Neither Indigo nor Qatom Authenticator shows ads.

### Which is updated more often, Indigo or Qatom Authenticator?

Indigo ships an update every 4 weeks, and Qatom Authenticator monthly. Most recently, Indigo was updated on September 24, 2026 and Qatom Authenticator on July 6, 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.*