# Mercury Diagnostic App vs LiTime

The clearest difference is update cadence: LiTime at every 2 weeks against Mercury Diagnostic App's every 11 months. LiTime also leads on ratings volume (277 vs 1). Mercury Diagnostic App's advantage is iOS requirement (10.0 vs 13.0). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.0 for Mercury Diagnostic App against 3.1 for LiTime. That said, the two scores are not equally well evidenced: LiTime has 277 ratings behind it against 1, so its average is the more settled of the two.

Mercury Diagnostic App ships an update every 11 months, LiTime every 2 weeks. The most recent releases landed on November 5, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Mercury Diagnostic App | LiTime |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/mercury-diagnostic-app/id1491041580/reviews) | **[3.1 (277 ratings)](https://appshunter.io/ios/app/litime/id6472779872/reviews)** |
| Number of ratings | 1 | **277** |
| Positive reviews | — | 24.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 73 MB | 101 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Mercury Marine LLC](https://appshunter.io/developer/1777822540) | [Shenzhen Litime Technology Co.,Ltd](https://appshunter.io/developer/1697659864) |

## What reviewers say

### Mercury Diagnostic App

[App page](https://appshunter.io/ios/app/mercury-diagnostic-app/id1491041580)

This app allows Mercury dealer technicians to perform basic diagnostics on SmartCraft® engines. It provides live engine data, fault information, runtime history, and custom data lists. Full functionality requires a license key and a VesselView Mobile module.

**Highlights:** View live SmartCraft® engine data, Create custom data lists, Obtain active faults, View runtime history, Enter maintenance records, Wireless communication via Bluetooth

**Features:** Vision Pro support

**In-app purchases:** none


### LiTime

[App page](https://appshunter.io/ios/app/litime/id6472779872)

Monitor your smart energy storage battery in real-time via Bluetooth. Remotely control charging modes and view battery levels, temperature, and speeds. This user-friendly app offers effortless energy management.

**Highlights:** Real-time battery monitoring, Bluetooth connectivity, Remote charging control, View battery levels, Monitor temperature and speeds, User-friendly interface

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use app
- 🚀 Provides essential battery information
- 💡 Helpful for monitoring battery status
- ⚡ Works well with the batteries

**What reviewers complain about**

- 🐛 Connectivity issues with Bluetooth
- 🔒 Requires login/account for basic functionality
- 🔋 Inaccurate battery state of charge readings
- 💤 App goes into standby mode unexpectedly
- 📢 Intrusive ads and unnecessary features

**Reported bugs**

- App crashes or freezes after updates
- Login/account issues prevent access
- Battery status not updating correctly
- Compatibility problems with newer devices

**Requested features**

- Ability to monitor individual cell voltages
- Option to set low battery charge thresholds
- Offline mode for remote usage without internet
- Improved battery balancing and management


## Frequently asked questions

### Is Mercury Diagnostic App free?

Mercury Diagnostic App is free to download, with no in-app purchases.

### Is LiTime free?

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

### Which has better reviews, Mercury Diagnostic App or LiTime?

LiTime is rated higher. Mercury Diagnostic App averages 3.0 out of 5 from 1 ratings, while LiTime averages 3.1 from 277 ratings.

### Do Mercury Diagnostic App or LiTime have ads?

Neither Mercury Diagnostic App nor LiTime shows ads.

### Which is updated more often, Mercury Diagnostic App or LiTime?

Mercury Diagnostic App ships an update every 11 months, and LiTime every 2 weeks. Most recently, Mercury Diagnostic App was updated on November 5, 2026 and LiTime on November 12, 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.*