Instantly AI vs Shadow Security
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Instantly AI
This app provides on-the-go email management. Read replies, quickly respond or forward messages, and search your inbox using various filters.
- Read emails on the go
- Quickly reply to emails
- Forward emails
- Search emails with filters
- Manage Unibox
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Instantly app allows you to read the replies on the go, quickly reply or forward emails, as well as search the emails based on different filters.
Shadow Security
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PROTECT YOUR DOCUMENTS FROM AI ATTACKS Shadow Security is the first PDF security app with AI-powered threat detection. Scan documents for prompt injection, data exfiltration, malware, and 160+ other sophisticated attacks. ENTERPRISE-GRADE SECURITY FOR EVERYONE • 160+ Threat Detection Patterns across 30 categories • AI Attack Protection (prompt injection, jailbreaks) • Malware & Virus Detection • Hidden Text Detection (steganography) • Data Exfiltration Prevention • SQL Injection & XSS Detection • Command Injection Protection • And much more... PROFESSIONAL PDF TOOLS INCLUDED • Full-featured PDF viewer with smooth scrolling • Annotations: highlights, notes, drawings, signatures • Form filling and editing • OCR text extraction • Page management and organization • Export to multiple formats • Print with advanced options 100% PRIVATE & SECURE • All scanning happens on YOUR device • No cloud uploads or data collection • No internet connection required • Your documents never leave your device • AES-256 encryption for sensitive data • GDPR, HIPAA, CCPA compliant CLEAN FILE EXPORT • Remove all detected threats automatically • Scrub metadata and EXIF data • Export sanitized versions of documents • Verify clean files with re-scanning • Batch cleaning for multiple files COMPLIANCE TRACKING • GDPR compliance monitoring • HIPAA compliance features • SOC2 compliance tracking • PCI-DSS compliance support • Audit logging and reporting • Enterprise-ready compliance tools ADVANCED FEATURES • Batch scanning for multiple files • Scheduled automatic scans • Folder watching and monitoring • Detailed threat reports (PDF, JSON, CSV) • Threat severity classification • Real-time security dashboard • AI-powered threat intelligence MULTI-PLATFORM • Native macOS app (Apple Silicon + Intel) • Native iOS app (iPhone + iPad) • iCloud sync across devices • Handoff support • Universal purchase PERFECT FOR • Business professionals handling sensitive documents • Healthcare providers (HIPAA compliance) • Legal professionals • Financial services • Government agencies • Privacy-conscious individuals • Anyone who values document security WHY SHADOW SECURITY? In an era of AI-powered attacks, traditional security tools aren't enough. Shadow Security uses advanced algorithms to detect sophisticated threats that other apps miss: • Prompt injection attacks that manipulate AI systems • Jailbreak techniques that bypass security controls • Hidden malicious code in seemingly innocent documents • Data exfiltration attempts • Social engineering attacks • And 155+ other threat patterns TRUSTED BY PROFESSIONALS Shadow Security is built by security experts and trusted by professionals worldwide. Our threat detection algorithms are constantly updated to protect against the latest attacks. EASY TO USE Despite its advanced capabilities, Shadow Security is incredibly easy to use: 1. Open any PDF, Word doc, or image 2. Tap "Scan for Threats" 3. Review detailed results 4. Export clean version if needed TERMS OF USE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Instantly AI at none against Shadow Security's 1. Instantly AI also leads on update cadence (every 2 months vs every 5 months) and iOS requirement (16.4 vs 18.0). On price, ads 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. Shadow Security sells 1 in-app purchase, starting at $0.99 per month. Instantly AI asks for nothing beyond the download.
Instantly AI ships an update every 2 months, Shadow Security every 5 months. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.
| Parameter | Instantly AI | Shadow Security |
|---|---|---|
| Price | Free | Free |
| Rating | 2.9 (36 ratings) — better | — |
| Positive reviews | 58.9% of reviews | — |
| Number of ratings | 36 — better | — |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 44 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Foo Monk LLC | Stephen Luadzers |
Bugs and requests
Instantly AI
Reported bugs
15 issues- Cannot sign in via Google or set password
- Same emails showing up repeatedly in unibox
- No send button for replies on iPhone
- App logs out every time app is closed
- App keeps logging out every few hours
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- Leads don't stay labeled
- Refreshing the inbox lags
- Workspaces lag when switching
- Button to send replies disappears or hides
- Cannot delete emails from inbox via the app
- Cannot SEND emails via the app
- Number 3 key triggers Macro
- Autoscrolling doesn't work
- Paste doesn't work 7/10 times
- Unfixable error when trying to switch to a different workspace unibox
Requested features
10 requests- More options for campaign visibility
- Ability to change campaign copy in app
- In-depth notification settings
- Add more features to notifications
- Keep me signed in option
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- See campaign stats on mobile
- Create campaigns on mobile
- Edit campaign details on mobile
- Add functionality for 'Other' tab emails
- View campaign performance in app
Shadow Security
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Instantly AI
No in-app purchases
Shadow Security
- Shadow Security Monthly3 Days trial$0.991 Month









