Atom (Site Engineer) vs ACE Wizard TM44 AC Inspections
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Atom (Site Engineer)
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Site Engineer is a fully integrated mobile application that runs side by side with Atom. Empower your staff to instantly send and receive jobs, sites, contacts and important documentation to keep your business flowing at the speed you expect. Staff record time spent and parts used on jobs and obtain customer sign off whilst on site and update the office automatically giving management a real time overview of work and resources. This app provides all the features & functionality to allow your field based team to manage jobs they have been assigned. With Site Engineer you can: 1. Have full visibility of jobs assigned to you. 2. Complete Task lists. 3. Complete customised electronic documents. 4. Attach documents received from third party vendors to jobs. 5. View full details of sites and maintenance plans. 6. Manage your statutory F-Gas requirements.
ACE Wizard TM44 AC Inspections
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Developed to minimise the report time taken to complete Air Conditioning Energy Assessments (TM44’s). This all-in-one mobile solution helps assessors gather essential report data and complete inspections whilst they are out on site. It also includes access to the ACE Wizard AC system data base whether on or off-line, allowing assessors to build asset lists and inspect systems even in buildings with poor Wi-Fi. • iOS Mobile and Tablet optimised • Reduce report writing time • Access to thousands of validated AC systems while on site • Provides Cooling, Heating, EER/COP/SEER/SCOP & Refrigerant data • Access to HRU database while on site • Works off-line • Sync to ACE at anytime (requires internet/network connection) • Create a 'Sampled System' or 'Full External Plant’ Asset List • Check, Edit & Review an existing Asset List • Sample systems • Access to personal System Sampling Templates • Capture Building, System, Area, Controller notes for off-site review • Supports voice to text conversion (requires compatible device) • Supports handwriting to text (requires compatible device) • Permits the viewing of ‘Job Notes’ prepared in advance by administration teams • Allows support staff to start producing a report Not An ACE Wizard Assessor? If you are not an ACE Wizard Assessor, you will need to contact us about signing up and unlocking the benefits of carrying out an air conditioning energy assessment on the most advance TM44 software available. Designed by assessors to help assessor provide the best TM44 reports possible. Professional reports with on-line access for you and your clients. Please contact us at: support@acewizard.co.uk
Screenshots
Verdict
The clearest difference is update cadence: ACE Wizard TM44 AC Inspections at every 3 days against Atom (Site Engineer)'s fortnightly. ACE Wizard TM44 AC Inspections also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
Atom (Site Engineer) ships an update fortnightly, ACE Wizard TM44 AC Inspections every 3 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Atom (Site Engineer) | ACE Wizard TM44 AC Inspections |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 51 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Saphire Computers Limited | ACE Wizard TM44 AC Inspections |
In-app purchases
Atom (Site Engineer)
No in-app purchases
ACE Wizard TM44 AC Inspections
No in-app purchases
Questions
Is Atom (Site Engineer) free?
Is ACE Wizard TM44 AC Inspections free?
Do Atom (Site Engineer) or ACE Wizard TM44 AC Inspections have ads?
Which is updated more often, Atom (Site Engineer) or ACE Wizard TM44 AC Inspections?
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