# LeafSpy Pro vs DT Smart Battery

The clearest difference is review sentiment: LeafSpy Pro at 46% against DT Smart Battery's 0%. LeafSpy Pro also leads on rating (3.5 vs 1.5) and ratings volume (115 vs 8). DT Smart Battery's advantage is price (Free vs $19.99) and iOS requirement (11.0 vs 16.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

DT Smart Battery is free to download; LeafSpy Pro costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LeafSpy Pro holds the better App Store score, 3.5 against 1.5. That said, the two scores are not equally well evidenced: LeafSpy Pro has 115 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 46% of LeafSpy Pro's written reviews are positive against 0% of DT Smart Battery's.

LeafSpy Pro ships an update every 2 months, DT Smart Battery every 3 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | LeafSpy Pro | DT Smart Battery |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[3.5 (115 ratings)](https://appshunter.io/ios/app/leafspy-pro/id967376861/reviews)** | [1.5 (8 ratings)](https://appshunter.io/ios/app/dt-smart-battery/id1446858822/reviews) |
| Number of ratings | **115** | 8 |
| Positive reviews | **45.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#12** | — |
| Size | 13 MB | 28 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [James Pollock](https://appshunter.io/developer/967376860) | [应刚 郑](https://appshunter.io/developer/1446858821) |

## What reviewers say

### LeafSpy Pro

[App page](https://appshunter.io/ios/app/leafspy-pro/id967376861)

**Currently charting:** #12 Top Paid · Lifestyle (US App Store)

Monitor your Nissan Leaf's battery health, charging history, and vehicle diagnostics. Perform dealer-level functions like changing settings and reading trouble codes. Log data and sync to Dropbox for detailed analysis.

**Highlights:** Cell pair voltage monitoring, Battery temperature readings, Battery AHr rating and capacity, Charging connection history, Diagnostic Trouble Code (DTC) reading, Tire pressure monitoring, Trip and charge logging

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Great app!
- 👍 Easy to use
- 🔋 Helpful for monitoring battery health
- 💡 Integrates with other apps
- 👍 Vital for Leaf owners

**What reviewers complain about**

- 🐛 Doesn't work with latest iOS
- 👎 Poor user interface
- 🐛 Crashes frequently
- 👎 Expensive for functionality
- 🐛 Doesn't work with all OBD2 dongles

**Reported bugs**

- Doesn't connect via Bluetooth on iOS
- Crashes on startup after iOS updates
- Fails to load data despite being connected
- Doesn't work with Mini OBD2 scanners
- Can't change sounds on newer Leaf models

**Requested features**

- Add support for newer Leaf models
- Improve user interface and design
- Add Apple CarPlay integration
- Expand compatibility with more OBD2 dongles
- Improve documentation and in-app help


### DT Smart Battery

[App page](https://appshunter.io/ios/app/dt-smart-battery/id1446858822)

Monitor your smart battery pack's performance and status remotely via Bluetooth. View real-time data like voltage, current, temperature, and remaining power. Receive alerts for critical conditions and set custom reminders.

**Highlights:** Real-time battery status monitoring, Voltage, current, and temperature readings, Remaining power percentage, Protection information alerts, Individual cell voltage monitoring, Customizable power and temperature reminders

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LeafSpy Pro free?

LeafSpy Pro costs $19.99, with no in-app purchases.

### Is DT Smart Battery free?

DT Smart Battery is free to download, with no in-app purchases.

### Which has better reviews, LeafSpy Pro or DT Smart Battery?

LeafSpy Pro is rated higher. LeafSpy Pro averages 3.5 out of 5 from 115 ratings, while DT Smart Battery averages 1.5 from 8 ratings.

### Do LeafSpy Pro or DT Smart Battery have ads?

Neither LeafSpy Pro nor DT Smart Battery shows ads.

### Which is updated more often, LeafSpy Pro or DT Smart Battery?

LeafSpy Pro ships an update every 2 months, and DT Smart Battery every 3 months. Most recently, LeafSpy Pro was updated on October 29, 2026 and DT Smart Battery 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.*