iManifold vs Appion Central
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iManifold
This app calculates HVAC/R system performance and aids in troubleshooting. It offers a wide selection of refrigerants and equipment profiling for various common systems.
- Calculates HVAC/R system performance
- Troubleshoots system problems
- User input and live system data
- Over 40 selectable refrigerants
- Equipment profiling options
- Customizable for common HVAC/R systems
Read full descriptionHide full description
The iManifold App Calculates HVAC/R system performance and troubleshoots system problems through user inputs and dynamic, live system data. With over 40 selectable refrigerants and equipment profiling options, the iManifold app can be custom tailored for many common HVAC/R systems in the field.
Appion Central
Manage your HVAC tools and connect to the web portal. This app provides a mobile interface for your Appion products.
- Manage Appion products
- Interface with Appion Portal
- Mobile tool management
Read full descriptionHide full description
Appion Central is designed to allow users to manage their Appion products as well as provide an interface with the Appion Portal web service.
Screenshots
Verdict
The clearest difference is in-app purchases: Appion Central at none against iManifold's 10. iManifold's advantage is rating (3.1 vs 2.8) and review sentiment (50% vs 29%). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. iManifold sells 10 one-off in-app purchases. Appion Central asks for nothing beyond the download.
iManifold holds the better App Store score, 3.1 against 2.8. Both are backed by a comparable volume of ratings — 38 and 14 respectively. Written reviews point the same way: 50% of iManifold's written reviews are positive against 29% of Appion Central's.
iManifold ships an update every 3 weeks, Appion Central every 5 weeks. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | iManifold | Appion Central |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (38 ratings) — better | 2.8 (14 ratings) |
| Positive reviews | 50.0% of reviews — better | 28.6% of reviews |
| Number of ratings | 38 — better | 14 |
| Update frequency | Every 3 weeks — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 29 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | North Park Innovations Group, Inc. | Appion Inc. |
Customer experience
iManifold
Appion Central
In-app purchases
iManifold
- Charge & Airflow Report$0.99
- Mechanical Inspection$0.99
- Equipment Replacement Report$0.99
Show 7 moreShow fewer
- CSV Export$0.99
- Annualized Savings Report$0.99
- Gas Furnace Report$0.99
- iManifold Report Pro - 1 Circuit$1.99
- iManifold Report Pro - 2 Circuit$2.99
- iManifold Report Pro - 3 Circuit$3.99
- iManifold Report Pro - 4 Circuit$4.99
Appion Central
No in-app purchases
Questions
Is iManifold free?
Is Appion Central free?
Which has better reviews, iManifold or Appion Central?
Do iManifold or Appion Central have ads?
Which is updated more often, iManifold or Appion Central?
Other comparisons
