# CORE Service vs Budderfly

The clearest difference is rating: CORE Service at 3.6 against Budderfly's 3.0. CORE Service also leads on ratings volume (19 vs 6). Budderfly's advantage is update cadence (every 9 days vs every 3 months). On price, review sentiment, 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.

CORE Service holds the better App Store score, 3.6 against 3.0. Both are backed by a comparable volume of ratings — 19 and 6 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

CORE Service ships an update every 3 months, Budderfly every 9 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | CORE Service | Budderfly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (19 ratings)](https://appshunter.io/ios/app/core-service/id1566612696/reviews)** | [3.0 (6 ratings)](https://appshunter.io/ios/app/budderfly/id1659450496/reviews) |
| Number of ratings | **19** | 6 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Free | Free |
| Size | 47 MB | 201 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lennox Industries](https://appshunter.io/developer/355049651) | [Budderfly LLC](https://appshunter.io/developer/1007548638) |

## What reviewers say

### CORE Service

[App page](https://appshunter.io/ios/app/core-service/id1566612696)

This app provides a wireless interface for commercial HVAC technicians to control and service specific Lennox rooftop units. It offers guided setup, enhanced testing, and parameter configuration to streamline the service process.

**Highlights:** Wireless mobile service app, Guided setup with progress indicators, Enhanced test functionality, Real-time sensor readings and trending, Parameter configuration, Exportable setup summaries

**Features:** macOS Compatibility

**In-app purchases:** none


### Budderfly

[App page](https://appshunter.io/ios/app/budderfly/id1659450496)

Monitor and control energy efficiency with smart devices. This app requires a valid Budderfly user account for access. It's designed for customers, contractors, and employees.

**Highlights:** Energy efficiency control, Device monitoring, User account access, Customer, contractor, and employee use

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CORE Service free?

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

### Is Budderfly free?

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

### Which has better reviews, CORE Service or Budderfly?

CORE Service is rated higher. CORE Service averages 3.6 out of 5 from 19 ratings, while Budderfly averages 3.0 from 6 ratings.

### Do CORE Service or Budderfly have ads?

Neither CORE Service nor Budderfly shows ads.

### Which is updated more often, CORE Service or Budderfly?

CORE Service ships an update every 3 months, and Budderfly every 9 days. Most recently, CORE Service was updated on October 24, 2026 and Budderfly 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.*