# Interlock Warm Up vs Sync

The clearest difference is rating: Sync at 4.6 against Interlock Warm Up's 1.4. Sync also leads on update cadence (monthly vs every 10 months) and ratings volume (4.1K vs 11). Interlock Warm Up's advantage is in-app purchases (none vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sync sells 2 in-app purchases, starting at $14.99 per month. Interlock Warm Up asks for nothing beyond the download.

Sync holds the better App Store score, 4.6 against 1.4. That said, the two scores are not equally well evidenced: Sync has 4.1K ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 0% of Interlock Warm Up's written reviews are positive against 17% of Sync's.

Interlock Warm Up ships an update every 10 months, Sync monthly. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Interlock Warm Up | Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.4 (11 ratings)](https://appshunter.io/ios/app/interlock-warm-up/id1457709536/reviews) | **[4.6 (4.1K ratings)](https://appshunter.io/ios/app/sync-ford-car-play-connect/id6447566962/reviews)** |
| Number of ratings | 11 | **4.1K** |
| Positive reviews | 0.0% of reviews | **16.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Monthly** |
| Monetization | **Free** | Subscription |
| Size | 26 MB | 82 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Low Cost Interlock](https://appshunter.io/developer/1262604721) | [Huy Nguyen](https://appshunter.io/developer/1681791646) |

## What reviewers say

### Interlock Warm Up

[App page](https://appshunter.io/ios/app/interlock-warm-up/id1457709536)

This app allows you to remotely start the interlock warm-up process for your vehicle. Avoid waiting in your car by initiating the warm-up sequence from your mobile device.

**Highlights:** Remote start warm-up process, Eliminate wait time in vehicle, Control interlock system, Mobile device integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Sync

[App page](https://appshunter.io/ios/app/sync-ford-car-play-connect/id6447566962)

Manage your vehicle remotely with this app. Track fuel, tire pressure, and battery levels. Locate your car in parking lots, find charging stations, and lock/unlock doors from your smartphone.

**Highlights:** Remote car management, Track fuel and tire pressure, Locate vehicle, Lock/unlock doors, Monitor battery levels, Find charging stations and parking

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $14.99 | per month |
| Yearly Premium | $39.99 | per year |

**What reviewers like**

- ⭐ Using for Mustang
- ⭐ Fiesta

**What reviewers complain about**

- 🚫 Charges for manufacturer's free app
- 🚫 Doesn't work with user's car
- 🚫 Can't connect to FordPass
- 🚫 No free trial
- 🚫 Confusing and cash-hungry

**Reported bugs**

- Login screen freezes
- Incompatible with older devices

**Requested features**

- Dark mode option
- Advanced analytics dashboard


## Frequently asked questions

### Is Interlock Warm Up free?

Interlock Warm Up is free to download, with no in-app purchases.

### Is Sync free?

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

### Which has better reviews, Interlock Warm Up or Sync?

Sync is rated higher. Interlock Warm Up averages 1.4 out of 5 from 11 ratings, while Sync averages 4.6 from 4.1K ratings.

### Do Interlock Warm Up or Sync have ads?

Neither Interlock Warm Up nor Sync shows ads.

### Which is updated more often, Interlock Warm Up or Sync?

Interlock Warm Up ships an update every 10 months, and Sync monthly. Most recently, Interlock Warm Up was updated on October 24, 2026 and Sync on October 27, 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.*