# RPS vs Interlock Warm Up

The clearest difference is rating: RPS at 2.4 against Interlock Warm Up's 1.4. RPS also leads on ratings volume (109 vs 11). On price, review sentiment, update cadence and ads there is nothing between them.

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

RPS holds the better App Store score, 2.4 against 1.4. That said, the two scores are not equally well evidenced: RPS has 109 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 7% of RPS's written reviews are positive against 0% of Interlock Warm Up's.

RPS ships an update every 9 months, Interlock Warm Up every 10 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | RPS | Interlock Warm Up |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (109 ratings)](https://appshunter.io/ios/app/rps-inmate-info/id898081867/reviews)** | [1.4 (11 ratings)](https://appshunter.io/ios/app/interlock-warm-up/id1457709536/reviews) |
| Number of ratings | **109** | 11 |
| Positive reviews | **6.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 10 months |
| Monetization | Free | Free |
| Size | 32 MB | 26 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Relativity, Inc.](https://appshunter.io/developer/710575722) | [Low Cost Interlock](https://appshunter.io/developer/1262604721) |

## What reviewers say

### RPS

[App page](https://appshunter.io/ios/app/rps-inmate-info/id898081867)

Access comprehensive inmate information for your city or county, including booking details, mugshots, and release dates. Find nearby jails, view their hours, visitation rules, and get directions. Stay updated on recent arrests and releases.

**Highlights:** Jail booking and mugshot access, Inmate information display (name, picture, dates), 24-hour arrest and release updates, Nearest jail identification and details, Jail map location and directions, Visitation rules and contact information

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Modern redesign appreciated
- 👍 Good flow when clicking around
- 👍 Helpful for seeing bookings and charges

**What reviewers complain about**

- 🐛 App not working for weeks
- 🐛 Showing zero inmates
- 🐛 No inmates in jail
- 🐛 Stuck on wrong locations
- 🐛 Not showing current inmates

**Reported bugs**

- Some jails showing zero inmates
- App not working for weeks
- Stuck on wrong locations
- Not showing current inmates
- Disappearing inmates

**Requested features**

- Fix zero inmates issue
- Update app to work with current iOS
- Allow users to choose state
- Improve location services
- Add nearby counties


### 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


## Frequently asked questions

### Is RPS free?

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

### Is Interlock Warm Up free?

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

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

RPS is rated higher. RPS averages 2.4 out of 5 from 109 ratings, while Interlock Warm Up averages 1.4 from 11 ratings.

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

Neither RPS nor Interlock Warm Up shows ads.

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

RPS ships an update every 9 months, and Interlock Warm Up every 10 months. Most recently, RPS was updated on November 1, 2026 and Interlock Warm Up on November 2, 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.*