# Sienergy app vs Authenticator

The clearest difference is rating: Authenticator at 3.5 against Sienergy app's 1.0. Authenticator also leads on ratings volume (190 vs 9). Sienergy app's advantage is in-app purchases (none vs 8) and update cadence (every 6 weeks vs every 6 months). On price, review sentiment, ads and iOS requirement there is nothing between them.

Both are free to download. Authenticator sells 8 in-app purchases, starting at $5.99 per 7 days. Sienergy app asks for nothing beyond the download.

Authenticator holds the better App Store score, 3.5 against 1.0. That said, the two scores are not equally well evidenced: Authenticator has 190 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 0% of Sienergy app's written reviews are positive against 4% of Authenticator's.

Sienergy app ships an update every 6 weeks, Authenticator every 6 months. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Sienergy app | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (9 ratings)](https://appshunter.io/ios/app/sienergy-app/id6468079074/reviews) | **[3.5 (190 ratings)](https://appshunter.io/ios/app/authenticator-mfa-and-2fa/id6612031858/reviews)** |
| Number of ratings | 9 | **190** |
| Positive reviews | 0.0% of reviews | **4.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 41 MB | 52 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sienergy S.R.L.](https://appshunter.io/developer/1892326818) | [Level Clash Apps S.L.](https://appshunter.io/developer/1590871236) |

## What reviewers say

### Sienergy app

[App page](https://appshunter.io/ios/app/sienergy-app/id6468079074)

Manage your energy and gas utility account with the official application. Submit meter readings and access other account management features conveniently.

**Highlights:** Manage energy and gas utility accounts, Submit meter readings, Access account information, Official utility app

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

**In-app purchases:** none


### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-mfa-and-2fa/id6612031858)

Securely store and generate two-factor authentication codes for your online accounts directly on your device. Features encrypted backups, cross-device sync, and quick access widgets. Supports thousands of services and offers offline code generation.

**Highlights:** Secure and private data storage, Encrypted backups to iCloud, Cross-device sync including Apple Watch, Home Screen widget for quick access, Offline code generation, Import accounts from other authenticators, Support for thousands of major services

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $5.99 | per 7 days |
| Weekly Plan | $6.99 | per 7 days |
| Weekly | $6.99 | per 7 days |
| Weekly Plan | $7.99 | per 7 days |
| Weekly Plan | $8.99 | per 7 days |
| Premium Subscription | $19.99 | per month |
| Monthly | $19.99 | per month |
| yearly subscription | $79.99 | per year |

**What reviewers like**

- 👍 Easy and simple to use
- 👍 Keep your codes near

**What reviewers complain about**

- 🤥 Misleading app name (mimics Authy)
- 💸 Unexpected subscription charges
- ❌ App is not free as advertised
- 🚫 Forced payment pop-ups
- 🗑️ Erased connected apps after update

**Reported bugs**

- App won't open after payment
- Connected apps erased by update
- Lost access to important accounts due to app deletion
- App declines correct entries
- Funds inaccessible


## Frequently asked questions

### Is Sienergy app free?

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

### Is Authenticator free?

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

### Which has better reviews, Sienergy app or Authenticator?

Authenticator is rated higher. Sienergy app averages 1.0 out of 5 from 9 ratings, while Authenticator averages 3.5 from 190 ratings.

### Do Sienergy app or Authenticator have ads?

Neither Sienergy app nor Authenticator shows ads.

### Which is updated more often, Sienergy app or Authenticator?

Sienergy app ships an update every 6 weeks, and Authenticator every 6 months. Most recently, Sienergy app was updated on October 9, 2026 and Authenticator on October 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*