ST25DV vs ContactsAI
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
ST25DV
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The ST25DV-I2C CryptoDemo iOS application shows how to establish a secure transfer channel over NFC, between an STM32 microcontroller and an iOS smartphone using coreNFC framework. It uses the fast transfer mode (FTM) feature of the ST25DV-I2C NFC Tag. An ST25DV-I2C-DISCO board is required to run the demonstration. This demonstration establishes a secure transfer channel by using cryptography to perform mutual authentication and to encrypt the communications over NFC. This secure transfer channel is used during the demonstration to securely send and retrieve data, perform the device settings, and upload new firmware. Only the granted user may communicate with the STM32 microcontroller to perform these operations. All the communications are encrypted between the microcontroller and the iOS phone in both ways, so that the user can configure the product or retrieve data securely. FEATURES : - Use the new NFC core feature of iOS 13, supporting the read an write of NFC for ISO15693 tag protocol. - Encryption of all NFC bidirectional communications between an iOS Phone and an STM32 microcontroller Fast communications over NFC, using ST25DV fast transfer mode - AES and ECC cryptography - Mutual authentication between the iOS phone and the STM32 microcontroller - Establishment of a unique AES session key - Encryption can be used to retrieve data, set device settings or update the firmware securely
ContactsAI
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ContactsAI reimagines how you save and find contacts. Instead of typing field by field, just describe the person โ in text, by voice, or by scanning their business card โ and Apple Intelligence does the rest, entirely on your device. **CAPTURE CONTACTS NATURALLY** Type a sentence like "Sarah Lee, product designer at Verve Studio, sarah@verve.io" and ContactsAI instantly extracts a full contact card โ name, phone, email, job title, company, hometown, where you met, and more. No form-filling. No tapping through fields. **VOICE INPUT** Enable the microphone and speak contact details naturally. ContactsAI transcribes and extracts everything on-device using Speech Recognition. **BUSINESS CARD SCANNER** Point your camera at any business card. ContactsAI auto-captures once it detects enough text and builds the contact card for you. Or pick a card photo from your library. **NATURAL LANGUAGE SEARCH** Forget scrolling through hundreds of names. Search the way you think: โข "Who did I meet in Paris?" โข "Find all Designers" โข "Show contacts from Acme" **ORGANIZE WITH GROUPS** Create custom contact groups with your choice of name, color, and icon. Assign contacts to multiple groups. Manage memberships from any contact detail screen. **APPLE CONTACTS SYNC** Optionally sync with your existing Apple Contacts. All locally added contacts are always available โ even without sync enabled. **100% ON-DEVICE AI** Every bit of AI processing โ extraction, classification, search โ runs locally using Apple Intelligence Foundation Models. Your contacts are never sent to any external server. Ever. --- **REQUIREMENTS** โข iPhone 15 Pro or later โข iOS 26 or later โข Apple Intelligence enabled
Screenshots
Verdict
The clearest difference is iOS requirement: ST25DV at 13.4 against ContactsAI's 26.0. On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | ST25DV | ContactsAI |
|---|---|---|
| Price | Free | Free |
| Update frequency | โ | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.4 โ better | 26.0 |
| Further details โ not scored | ||
| Size | 22 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | STMicroelectronics | Khurram Awan |
In-app purchases
ST25DV
No in-app purchases
ContactsAI
No in-app purchases









