# SeeLeveL Sync vs Tru

The clearest difference is update cadence: Tru at every 6 days against SeeLeveL Sync's every 2 months. SeeLeveL Sync's advantage is iOS requirement (13.4 vs 18.2). On price, ads, in-app purchases and device support there is nothing between them.

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

SeeLeveL Sync ships an update every 2 months, Tru every 6 days. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SeeLeveL Sync | Tru |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (5 ratings)](https://appshunter.io/ios/app/seelevel-sync/id6451456679/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free | — |
| Size | 25 MB | 6 MB |
| Requires iOS | **13.4** | 18.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Garnet Instruments Ltd.](https://appshunter.io/developer/1148117796) | [Marco Frigerio](https://appshunter.io/developer/1873934230) |

## What reviewers say

### SeeLeveL Sync

[App page](https://appshunter.io/ios/app/seelevel-sync/id6451456679)

Monitor your RV's fresh water, grey water, black water, and LPG tank levels in real-time. Customize tank names, colors, and set alarms for low or high levels. Connects via Bluetooth to compatible SeeLeveL II tank monitors.

**Highlights:** Real-time tank level monitoring, Customizable tank names and colors, Low and high level tank alarms, Bluetooth connectivity, Graphical and percentage display, Home Screen widget support

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

**In-app purchases:** none


### Tru

[App page](https://appshunter.io/ios/app/tru-control/id6758611832)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is SeeLeveL Sync free?

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

### Is Tru free?

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

### Do SeeLeveL Sync or Tru have ads?

Neither SeeLeveL Sync nor Tru shows ads.

### Which is updated more often, SeeLeveL Sync or Tru?

SeeLeveL Sync ships an update every 2 months, and Tru every 6 days. Most recently, SeeLeveL Sync was updated on October 9, 2026 and Tru on October 10, 2026.

---

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