# S vs Titanium Passkey

The clearest difference is price: S at Free against Titanium Passkey's $4.99. S also leads on update cadence (monthly vs every 3 months) and iOS requirement (15.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

S is free to download; Titanium Passkey costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

S ships an update monthly, Titanium Passkey every 3 months. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | S | Titanium Passkey |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.2 (90 ratings)](https://appshunter.io/ios/app/s-miles-enduser/id1544760866/reviews)** | — |
| Number of ratings | **90** | — |
| Positive reviews | 37.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free | — |
| Size | 207 MB | 13 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Hoymiles Power Electronics Inc.](https://appshunter.io/developer/1219594358) | [Pavel Kanzelsberger](https://appshunter.io/developer/399288546) |

## What reviewers say

### S

[App page](https://appshunter.io/ios/app/s-miles-enduser/id1544760866)

Monitor your distributed PV power plant's performance with real-time data. Track energy generation, view module-level details, and receive equipment alarm notifications to ensure optimal operation and yield.

**Highlights:** Module-level monitoring, Real-time data display, Plant-level data, Energy generation tracking, Alarm information

**Features:** macOS Compatibility

**In-app purchases:** none


### Titanium Passkey

[App page](https://appshunter.io/ios/app/titanium-passkey/id6762526415)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is S free?

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

### Is Titanium Passkey free?

Titanium Passkey costs $4.99, with no in-app purchases.

### Do S or Titanium Passkey have ads?

Neither S nor Titanium Passkey shows ads.

### Which is updated more often, S or Titanium Passkey?

S ships an update monthly, and Titanium Passkey every 3 months. Most recently, S was updated on October 23, 2026 and Titanium Passkey on October 17, 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.*