Cardify vs Silent Proof
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cardify
This app uses AI to help students and parents organize incorrect answers and knowledge points. Simply take a photo or select an image from your album, confirm the question's scope, and the app will create a clear record for review and tracking.
- Photo and album import of incorrect answers
- AI-powered question scope confirmation
- Detailed review of answers and solutions
- Original photo retention
- Organization by date, subject, and knowledge point
- Analysis of weak subjects and knowledge points
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Cardify is an AI mistake notebook for students and parents. When a student gets a question wrong, take a photo or choose an image from the library, confirm the question area, and Cardify turns it into a clear, traceable mistake record for later review. With Cardify, you can: - Capture mistakes from homework, worksheets, and practice tests - Confirm the exact question area before analysis - Review the question, student attempt, solution approach, solution steps, and feedback - Keep the original photo for checking details later - Organize mistakes by date, subject, and knowledge point - Use the analysis page to understand which subjects and knowledge points need more attention Cardify is designed for everyday K12 learning. We want mistakes to become reviewable, traceable learning records, not just photos saved in an album. Before using AI scanning, Cardify shows an AI data processing notice. Mistake images and necessary request information are used only to complete the current recognition and explanation request, and are not used to train AI models. [VIP Subscription] - Subscription Service: Unlock all premium features for unlimited access. - Pricing: Please refer to the in-app purchase page for specific pricing details. - Payment: Payment will be charged to your iTunes Account at confirmation of purchase. - Auto-Renewal: Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. - Renewal Charge: Account will be charged for renewal within 24 hours prior to the end of the current period. - Cancellation: You can manage or turn off auto-renewal in your Apple ID Account Settings at any time after purchase. - Terms of Use: https://blynkai.app/cardify/terms - Privacy Policy: https://blynkai.app/cardify/privacy
Silent Proof
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Prove your focus with verifiable proof. Silent Proof is the first app that creates tamper-evident proof of your phone non-usage during focus sessions. Whether you’re studying, working, or in a digital detox, you can show others—or yourself—that you stayed off your phone. How it works Create a focus session, lock your screen within 10 seconds, and keep it locked until the session ends. Silent Proof monitors your screen lock state and app usage in real time. When you’re done, you get a verifiable proof report with cryptographic hashing and device binding—so it can’t be faked. Verifiable proof Tamper-evident reports with SHA-256 cryptographic hashing Device-specific binding for authenticity Export as shareable PNG cards or detailed PDF reports (Pro) Full session metadata, including any violations and timestamps Analytics and insights Track daily and weekly silent minutes View your longest clean session streak Heatmap of your focus patterns over time Dashboard, Activity, and Insights tabs for a clear overview Smart violation detection The app records screen unlocks, app switches, and service interruptions during a session. Every violation is timestamped so your proof reflects exactly what happened. Privacy-first All data stays on your device. No cloud sync, no external servers. Your focus data is stored locally and protected by cryptographic hashing. Free and Pro Free: 3 focus sessions per day, PNG export Pro: Unlimited sessions and PDF export Note: Silent Proof monitors your phone usage to generate proof. It does not block apps or restrict access—it only records activity to create verifiable proof of focus time.
Screenshots
Verdict
The clearest difference is in-app purchases: Silent Proof at none against Cardify's 3. Cardify's advantage is update cadence (fortnightly vs every 4 months). On price, ads, device support and iOS requirement 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. Cardify sells 3 in-app purchases, starting at $9.99 per 7 days. Silent Proof asks for nothing beyond the download.
Cardify ships an update fortnightly, Silent Proof every 4 months. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.
| Parameter | Cardify | Silent Proof |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (12 ratings) — better | — |
| Positive reviews | 88.5% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Fortnightly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 12 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Beijing Huishuo Mobile Technology Co.,Ltd. | Archana Pant |
In-app purchases
Cardify
- Weekly3 Days trial$9.997 Days
- Yearly$99.991 Year
- Lifetime$199.99
Silent Proof
No in-app purchases








