Temtop vs OxCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Temtop
This app detects formaldehyde, PM2.5, and TVOC using advanced sensors. It provides accurate and reliable environmental data for your home or workspace.
- Formaldehyde detection
- PM2.5 detection
- TVOC detection
- British Dart electrochemical sensor
- US TEMTOP laser particle sensor
- Accurate and reliable data
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Detection function: formaldehyde, PM2.5, TVOC It is equipped with British Dart formaldehyde electrochemical sensor, which effectively reduces gas interference and makes formaldehyde detection more accurate. Accurate and reliable data using the US TEMTOP laser particle sensor
OxCalc
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OXCALC is a professional oxygen planning tool designed to simplify complex calculations during aeromedical evacuation and flight operations. Developed by an RAF clinician and based on Royal Air Force (RAF) and United States Air Force (USAF) doctrine, OXCALC allows aircrew and medical personnel to quickly estimate patient oxygen demand, cylinder contents, oxygen system endurance, and mission supply requirements at altitude and offline. OXCALC 2.0 has been completely redesigned for larger and more complex missions. The app now supports larger volumes of patients and oxygen systems, improved scientific calculations, live oxygen depletion tracking, visual loadplan planning, and QR-based mission sync between devices. Whether used for training, simulation, operational preparation, or mission planning, OXCALC provides a fast, consistent, and transparent way to perform calculations that would otherwise require multiple reference tables and manual steps. Key features include: - Patient oxygen demand calculation - Cylinder and oxygen system analysis - Support for cylinders, NPTLOX, SAROS, and airframe oxygen - Live oxygen depletion tracking with global pause/resume - Inventory management for patients and oxygen supplies - Visual loadplan for placing and connecting patients to oxygen systems - Flight planning and cabin altitude tools - QR mission sync between devices - Built-in calculation references - Offline functionality Important Notice OXCALC is intended as a training, planning, and educational tool. It does not replace approved operational documentation, aircraft manuals, clinical judgment, or local procedures. Users are responsible for verifying calculations and following their organization’s guidance. Feedback & Support OXCALC is maintained independently. Feedback, bug reports, and feature requests are very welcome. If you find the app useful, you may optionally support its continued development through the support link.
Screenshots
Verdict
The clearest difference is update cadence: Temtop at every 5 weeks against OxCalc's every 5 months. Temtop also leads on iOS requirement (15 vs 18.0). 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.
Temtop ships an update every 5 weeks, OxCalc every 5 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Temtop | OxCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 2.9 (82 ratings) — better | — |
| Positive reviews | 32.2% of reviews | — |
| Number of ratings | 82 — better | — |
| Update frequency | Every 5 weeks — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15 — better | 18.0 |
| Further details — not scored | ||
| Size | 183 MB | 36 MB |
| Age rating | 4+ | 17+ |
| Developer | Elitech Technology,Inc. | Bob Reijnders |
In-app purchases
Temtop
No in-app purchases
OxCalc
No in-app purchases









