eFace Auth vs Combinations & Probabilities
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
eFace Auth
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The eFace Auth application is developed according to the most actual services and technologies which could guarantee secure and accurate identity authentication. Nowadays for many services is essential to prove that the users are the same as who they say they are. For stronger identity authentication the eFace Auth app has to be used along with a valid Passport issued by a state which is part of the European Union. There are 2 main phases of the process of identity authentication: 1. Taking photos of the Passport with the smartphoneβs camera as well as a machine-reading process where the information from the digital part of the Passport has being read via the NFC tool of the smartphone. 2. Taking βselfiesβ (photos of yourselves) and recording movements of your face. The taken photos are compared with the photo which is on the Passport and the recording of the movements is automatically analysed in terms of confirming that the user in front of the camera is a real person. In case of discrepancy the process of authentication will be stopped and the user will not be able to authenticate themselves. The eFace Auth app is highly effective due to the process of matching the personβs data from the Passport and the facial recognition which has been done. The performed liveness checks verify that the taken selfie totally matches the face from the recorded video and the photo from the Passport. Having those security βlayersβ, eFace Auth is the perfect service which can be used for remote identity authentication.
Combinations & Probabilities
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Combinations & Probabilities puts the full power of discrete mathematics in your pocket β instantly. Whether you're a student, educator, analyst or simply curious about the real odds of anything, this is your precision toolkit. Beautifully designed for iOS 26 with Liquid Glass, supporting dark and light modes. CALCULATORS Combinations and permutations β with or without repetition β plus factorial, all powered by a prime-factorized fraction engine for exact, simplified results. Live calculation updates in real-time as you move the sliders. No loading, no waiting. Just math. PROBABILITY ENGINE Type favorable and total outcomes directly, or pipe your combination result into the probability calculator with a single tap. P(A) = m/n, calculated instantly. SCENARIOS Jump into pre-configured probability models β no setup required: Β· Lottery Models β real draws from the Americas and Europe. See how odds shift when you play 7 numbers instead of 6. Β· Dice β single or multiple dice, any target outcome. Β· Coins β exact odds for any head/tail sequence. HISTORY Tap copy on any result to save it to your history and clipboard simultaneously. Recall, reuse or delete individual entries. Up to 200 saved calculations in Pro β enough for the most demanding sessions. SMART INPUT Sliders for broad sweeps. Step controls β and + for precision. Input validation prevents mathematically impossible states β you simply can't break it. ββ C&P Pro is a one-time purchase that removes ads and unlocks all current and future features forever. No subscription. No recurring charges. Pay once, yours forever. All purchases are processed by Apple and subject to Apple's Terms of Sale: https://www.apple.com/legal/internet-services/itunes/ ββ Available in English, Portuguese, Spanish, French, Italian and German.
Screenshots
Verdict
The clearest difference is in-app purchases: eFace Auth at none against Combinations & Probabilities's 1. eFace Auth also leads on ads (none vs shown) and device support (3 vs 1). On price 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. Combinations & Probabilities sells 1 one-off in-app purchase. eFace Auth asks for nothing beyond the download.
| Parameter | eFace Auth | Combinations & Probabilities |
|---|---|---|
| Price | Free | Free |
| Update frequency | β | Weekly |
| Ads | No β better | Yes |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod β better | iPhone |
| Requires iOS | 13.0 β better | 26.0 |
| Further details β not scored | ||
| Size | 28 MB | 33 MB |
| Age rating | 4+ | +4 |
| Developer | SkimProt Ltd. | Joao Carrion |
In-app purchases
eFace Auth
No in-app purchases
Combinations & Probabilities
- C&P Pro$2.99
Questions
Is eFace Auth free?
Is Combinations & Probabilities free?
Do eFace Auth or Combinations & Probabilities have ads?
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