# Ozone Authenticator vs Subo

The clearest difference is in-app purchases: Ozone Authenticator at none against Subo's 6. Ozone Authenticator also leads on iOS requirement (15.1 vs 26.0). Subo's advantage is update cadence (every 4 days vs every 10 days). On price, ads and device support there is nothing between them.

Both are free to download. Subo sells 6 one-off in-app purchases. Ozone Authenticator asks for nothing beyond the download.

Ozone Authenticator ships an update every 10 days, Subo every 4 days. The most recent releases landed on September 29, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Ozone Authenticator | Subo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (74 ratings)](https://appshunter.io/ios/app/subo-subscription-manager/id6741823650/reviews)** |
| Number of ratings | — | **74** |
| Positive reviews | — | 90.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 17 MB | 73 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [Ozone Financial Technology Limited](https://appshunter.io/developer/1462415707) | [Niclas Schmidt](https://appshunter.io/developer/1795759064) |

## What reviewers say

### Ozone Authenticator

[App page](https://appshunter.io/ios/app/ozone-authenticator/id1592047641)

**Features:** macOS Compatibility

**In-app purchases:** none


### Subo

[App page](https://appshunter.io/ios/app/subo-subscription-manager/id6741823650)

Effortlessly manage all your recurring bills and subscriptions in one place. Get smart reminders before charges hit, track your spending, and avoid unexpected fees with this privacy-focused organizer.

**Highlights:** Track subscription renewals, Monitor monthly and yearly spending, Receive smart charge reminders, Multi-currency support, Pre-filled provider templates, Clean, ad-free dashboard

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Espresso Shot | $1.99 | one-time |
| 3 Months Unlimited | $3.99 | one-time |
| Big Boost | $3.99 | one-time |
| Legendary Support | $8.99 | one-time |
| 12 Months Unlimited | $9.99 | one-time |
| Subo Unlimited – Lifetime Pass | $24.99 | one-time |

**What reviewers like**

- 👍 Simple and intuitive design
- 🚀 Clean and visually appealing layout
- 🔒 No data tracking or account required
- 💡 Helpful for managing subscriptions
- 💡 Provides subscription spending insights

**What reviewers complain about**

- 🐛 Inaccurate 'Due This Month' calculation
- 💡 Limited customization options for subscriptions
- 💡 Missing some common subscription services

**Reported bugs**

- Incorrect pricing on lifetime subscription offer
- Inconsistent behavior across iOS devices

**Requested features**

- iCloud sync between devices
- More subscription service integrations
- Custom icons or logos for subscriptions
- Public roadmap or feature teasers


## Frequently asked questions

### Is Ozone Authenticator free?

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

### Is Subo free?

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

### Do Ozone Authenticator or Subo have ads?

Neither Ozone Authenticator nor Subo shows ads.

### Which is updated more often, Ozone Authenticator or Subo?

Ozone Authenticator ships an update every 10 days, and Subo every 4 days. Most recently, Ozone Authenticator was updated on September 29, 2026 and Subo on October 11, 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.*