# TSUISL Smart Metering vs DNS Optimizer

The clearest difference is in-app purchases: TSUISL Smart Metering at none against DNS Optimizer's 2. TSUISL Smart Metering also leads on iOS requirement (15.6 vs 17.0). DNS Optimizer's advantage is update cadence (every 11 days vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. DNS Optimizer sells 2 one-off in-app purchases. TSUISL Smart Metering asks for nothing beyond the download.

TSUISL Smart Metering ships an update every 6 weeks, DNS Optimizer every 11 days. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | TSUISL Smart Metering | DNS Optimizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (81 ratings)](https://appshunter.io/ios/app/dns-optimizer-server-changer/id6741016224/reviews)** |
| Number of ratings | — | **81** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 11 days** |
| Monetization | — | Free with in-app purchases |
| Size | 41 MB | 9 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [InnologixConsulting](https://appshunter.io/developer/1286604784) | [ATAKAN YILDIRIM](https://appshunter.io/developer/1792591490) |

## What reviewers say

### TSUISL Smart Metering

[App page](https://appshunter.io/ios/app/tsuisl-smart-metering/id6474467220)

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

**In-app purchases:** none


### DNS Optimizer

[App page](https://appshunter.io/ios/app/dns-optimizer-server-changer/id6741016224)

Optimize your internet connection by easily switching DNS servers. Benchmark performance, block unwanted content, and enhance online gaming with secure and private browsing. Supports Wi-Fi and cellular networks on iPhone, iPad, and Mac.

**Highlights:** Switch system-wide DNS configurations, Benchmark DNS server performance, Pre-configured trusted DNS servers, Add custom encrypted DNS servers (DoH/DoT), Block ads and unwanted content, Improve online gaming latency

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DNS Optimizer Pro | $9.99 | one-time |
| DNS Optimizer Pro | $19.99 | one-time |


## Frequently asked questions

### Is TSUISL Smart Metering free?

TSUISL Smart Metering is free to download, with no in-app purchases.

### Is DNS Optimizer free?

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

### Do TSUISL Smart Metering or DNS Optimizer have ads?

Neither TSUISL Smart Metering nor DNS Optimizer shows ads.

### Which is updated more often, TSUISL Smart Metering or DNS Optimizer?

TSUISL Smart Metering ships an update every 6 weeks, and DNS Optimizer every 11 days. Most recently, TSUISL Smart Metering was updated on October 7, 2026 and DNS Optimizer on October 24, 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.*