Comparison

ThermoSphere vs PAT Test Pro

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

ThermoSphere

Easily manage your ThermoSphere electric heating devices from anywhere in the world. Control heating manually, set intelligent schedules, and access device settings all from your smartphone.

Highlights
  • Remote device control
  • Heating schedule creation
  • Manual control options
  • Access device settings
  • Compatible with various ThermoSphere devices
Read full description

Easy, simple control for ThermoSphere electric heating all in one place. The new and improved ThermoSphere app lets you control all of your ThermoSphere electric heating devices from your phone, from anywhere in the world. Compatible with ThermSphere SmartHome Thermostats, ThermoSphere WIFI Thermostats (2021 model onwards), ThermoSphere Glass Wifi Heaters and ThermoSphere SmartPlugs. Control manually or access the settings and heating schedule to build an intelligent and comfortable heating schedule.

About

PAT Test Pro

Streamline portable appliance testing with intelligent cloud sync and advanced barcode scanning. Generate professional, compliant certificates instantly for your clients. Designed for electrical contractors seeking efficiency and mobility.

Highlights
  • Seamless cloud sync across Apple devices
  • Advanced barcode scanning for auto-fill
  • Unlimited appliance and certificate testing
  • Instant, professional, compliant certification
  • Customizable certificate colors and company branding
  • Built-in database of common appliances
Features
Read full description

PAT Test Pro โ€” intelligent portable appliance testing on iPhone, iPad and Mac. Built by iCertifi for electricians and electrical contractors who want PAT testing finished on site, not typed up later. Scan, test, certify, email โ€” before you leave the building. WHY ELECTRICIANS SWITCH โ€ข Unlimited appliances and unlimited certificates โ€” no per-item or per-cert charges โ€ข Works offline; everything syncs the moment you are back on signal โ€ข Start on iPhone, continue on iPad, finish on Mac โ€” one account, one dataset โ€ข No PC, no third-party desktop software, no manual transfers SMART BARCODE SCANNING Scan an appliance ID and its details fill themselves in. Return to a site months later, scan the same item, and every previously saved detail โ€” make, model, location, class, previous results โ€” populates instantly. No duplicate entry, no re-typing. APPLIANCE PASSPORT Every appliance carries its own history. Tap any item in Scannable Appliances, or the History button on the test form, to see every test ever recorded against that Appliance ID: dates, certificates, pass/fail results, readings and photos. Ideal for client queries and repeat contracts. AI APPLIANCE SCANNING Point the camera at an appliance and let the AI carry out the visual inspection. It records every defect found, its severity and the reasoning, and saves the findings alongside the test โ€” ready-made evidence for failed items, remedial quotes and client disputes. RETEST DATES THAT CHASE THEMSELVES Set retest intervals per appliance or per site. Upcoming retests appear on your home screen, so recurring work comes back to you instead of quietly expiring. PROFESSIONAL CERTIFICATES Generate clean, fully compliant PAT test certificates carrying your company details, logo, retest date and digital signature. Choose your certificate colour. Email straight to the client as a secure PDF, or keep it in the cloud. BUILT FOR IN-SERVICE INSPECTION AND TESTING โ€ข Built-in database of common appliances for fast, accurate entry โ€ข Pass, fail and remedial recording with photo evidence โ€ข An asset register that builds itself as you test โ€ข Automatic certificate and page handling โ€” no page limits to manage โ€ข Class I, Class II, extension lead and IEC lead testing โ€ข Suits offices, schools, landlords, HMOs, hotels, construction sites and portfolio contracts BOOKKEEPING BUILT IN Every completed appliance can raise a draft invoice in Mint Books automatically โ€” invoicing, quotations and Making Tax Digital compliance without leaving the job. SECURE CLOUD, NOT A SPREADSHEET Industry-leading cloud infrastructure with end-to-end encryption and redundant storage. Your data is private, backed up and accessible only to you โ€” even if a device is lost, stolen or replaced. SUBSCRIPTION An auto-renewing subscription is required to send and save PAT testing certificates and to use cloud storage. Payment is charged to your iTunes account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours prior to the end of the current period. Manage or cancel at any time in your Account Settings. Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://icertifi.zendesk.com/hc/en-us/articles/201659279-iCertifi-s-Privacy-Policy-GDPR-Compliance

Screenshots

ThermoSphere4 screens
PAT Test Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: ThermoSphere at none against PAT Test Pro's 6. ThermoSphere also leads on review sentiment (30% vs 0%) and iOS requirement (11.0 vs 18.6). PAT Test Pro's advantage is update cadence (every 2 weeks vs every 13 months). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. PAT Test Pro sells 6 in-app purchases, starting at $24.99 per month. ThermoSphere asks for nothing beyond the download.

UpkeepUpdate frequency

ThermoSphere ships an update every 13 months, PAT Test Pro every 2 weeks. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

Scorecard5 real differences ยท 3 level
ThermoSphere versus PAT Test Pro: the parameters behind the verdict, then further details
ParameterThermoSpherePAT Test Pro
PriceFreeFree
Positive reviews30.0% of reviews โ€” better0.0% of reviews
Update frequencyEvery 13 monthsEvery 2 weeks โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
MonetizationFree โ€” betterSubscription
DevicesiPhone, iPod, Apple Watch โ€” betteriPhone, iPad
Requires iOS11.0 โ€” better18.6
Further details โ€” not scored
Size167 MB115 MB
Age rating4+4+
DeveloperThermogroup UKiCertifi

Customer experience

ThermoSphere

Written reviews10 reviews
Positive30.0%
Neutral10.0%
Negative60.0%

PAT Test Pro

Written reviews5 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

ThermoSphere

No in-app purchases

6 purchases

PAT Test Pro

Subscriptions3
  • 1 Month Subscription7 Days trial$24.991 Month
  • PAT Test Pro7 Days trial$119.991 Year
  • PAT Test Pro$349.001 Year
One-time3
  • 50 AI$4.99
  • 250 Appliance Scan credits$19.99
  • 1000 AI Credits$39.99

Questions

Is ThermoSphere free?
ThermoSphere is free to download, with no in-app purchases.
Is PAT Test Pro free?
PAT Test Pro is free to download, with in-app purchases available.
Do ThermoSphere or PAT Test Pro have ads?
Neither ThermoSphere nor PAT Test Pro shows ads.
Which is updated more often, ThermoSphere or PAT Test Pro?
ThermoSphere ships an update every 13 months, and PAT Test Pro every 2 weeks. Most recently, ThermoSphere was updated on October 24, 2026 and PAT Test Pro on October 22, 2026.

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