# LeafSpy Pro vs HeadsUpDaddy

The clearest difference is price: HeadsUpDaddy at Free against LeafSpy Pro's $19.99. HeadsUpDaddy also leads on update cadence (every 4 days vs every 2 months). LeafSpy Pro's advantage is in-app purchases (none vs 1) and chart position (#9 vs unranked). On ads, device support and iOS requirement there is nothing between them.

HeadsUpDaddy is free to download; LeafSpy Pro costs $19.99 up front. HeadsUpDaddy sells 1 one-off in-app purchase. LeafSpy Pro asks for nothing beyond the download.

LeafSpy Pro ships an update every 2 months, HeadsUpDaddy every 4 days. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | LeafSpy Pro | HeadsUpDaddy |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[3.5 (114 ratings)](https://appshunter.io/ios/app/leafspy-pro/id967376861/reviews)** | — |
| Number of ratings | **114** | — |
| Positive reviews | 45.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Paid | — |
| Best chart rank | **#9** | — |
| Size | 13 MB | 11 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [James Pollock](https://appshunter.io/developer/967376860) | [WakeSys sarl](https://appshunter.io/developer/1769788757) |

## What reviewers say

### LeafSpy Pro

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

**Currently charting:** #9 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


### HeadsUpDaddy

[App page](https://appshunter.io/ios/app/headsupdaddy/id6802102690)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $2.99 | one-time |


## Frequently asked questions

### Is LeafSpy Pro free?

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

### Is HeadsUpDaddy free?

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

### Do LeafSpy Pro or HeadsUpDaddy have ads?

Neither LeafSpy Pro nor HeadsUpDaddy shows ads.

### Which is updated more often, LeafSpy Pro or HeadsUpDaddy?

LeafSpy Pro ships an update every 2 months, and HeadsUpDaddy every 4 days. Most recently, LeafSpy Pro was updated on September 24, 2026 and HeadsUpDaddy on September 23, 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.*