BLTHZRD vs First Aid mob
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
BLTHZRD
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Balthazard's formula, worked out for you. Several impairments do not add up. Each one applies to what the ones before it left whole, so two rates of 25.5% and 12% combine to 34.44%, not 37.5%. The total climbs toward 100% and never passes it. Add as many rates as you need. Set each one on a wheel β no keyboard, no decimal separator to get wrong, nothing outside 0 to 100 to type by mistake. The combined rate updates as you go, and you can open the working to see the running total after each rate. Free, with no accounts, no adverts and no data collection. It does one calculation and does it properly. Available in English, Turkish, German, French, Spanish and Italian.
First Aid mob
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The application serves to work in conjunction with a personal ECG monitor KM-1 or with devices similar in parameters. The system (device and application) are designed to monitor the cardiac activity of affected people during heart attacks, accidents, injuries. When using an ECG monitor, the actions of other people during primary resuscitation before the arrival of the doctors (βFirst Aidβ) become much more effective. When using the device, it is not necessary to grope for the victimβs carotid artery and, very importantly, do not interrupt heart massage and artificial respiration for periodic monitoring. Practice has shown that the method of manual indication of the pulse is not reliable, especially in extreme conditions. The cardiac activity of the victim is evaluated by an electrocardiogram (ECG), which comes from adhesive electrodes glued to the patient's wrists. This allows not to undress a person, which is very important in an extreme situation. The electrocardiogram amplifies, coded and on a cable comes to the iPhone. It is displayed on the display, and a special algorithm determines the presence or absence of a pulse.
Screenshots
Verdict
The clearest difference is update cadence: First Aid mob at every 2 months against BLTHZRD's every 156 months. First Aid mob also leads on iOS requirement (9.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
BLTHZRD ships an update every 156 months, First Aid mob every 2 months. The most recent releases landed on September 26, 2026 and September 30, 2026 respectively.
| Parameter | BLTHZRD | First Aid mob |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 156 months | Every 2 months β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 9.0 β better |
| Further details β not scored | ||
| Size | 1 MB | 10 MB |
| Age rating | 4+ | 17+ |
| Developer | Kaan Gunduz | Ilia Shoshin |
In-app purchases
BLTHZRD
No in-app purchases
First Aid mob
No in-app purchases






