Comparison

Si vs SnapDue

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Si

Features
Read full description

Features 1. APP remote monitoring and management, Optional automatic/manual mode 2. APP fast switch light,light status monitoring 3. Scan QR code to share light to friends 4. Drive away the birds

About

SnapDue

Features
Read full description

Never forget important deadlines again! SnapDue uses advanced AI to automatically extract deadlines from photos and add them to your calendar in seconds. SMART PHOTO SCANNING Simply take a photo of bills, invoices, event flyers, product labels, or any document with a date. Our AI instantly recognizes deadlines and creates calendar reminders for you. AI-POWERED EXTRACTION SnapDue uses advanced AI technology to intelligently identify: - Payment due dates (bills, invoices, taxes) - Event dates (appointments, meetings, conferences) - Expiry dates (products, warranties, coupons) - Subscription renewals (Netflix, Spotify, trials) - Important documents (passport, visa, insurance, licenses) AUTOMATIC CALENDAR INTEGRATION Extracted deadlines are automatically added to your device calendar with smart reminders based on deadline type. Works with Google Calendar, Apple Calendar, and all native calendar apps. MESSAGE & EMAIL INTEGRATION Forward messages from popular apps (Messenger, Zalo, WhatsApp, Telegram, LINE) or emails containing deadlines, and SnapDue will automatically extract and add them to your calendar. No need to open the app! MULTI-LANGUAGE SUPPORT Supports more than 15 languages including English, Vietnamese, Japanese, Spanish, Chinese, Hindi, Arabic, Portuguese, French, Indonesian, German, Korean, Russian, Turkish, and Bengali. KEY FEATURES - Instant Extraction: Snap a photo and get results in seconds - Smart Categories: Automatically categorizes deadlines by type - Flexible Reminders: Customizable notifications for each deadline - Share from Anywhere: Share images, URLs, or text from any app - Batch Processing: Upload up to 10 images at once - Offline Mode: Works without internet using on-device OCR - Dark Mode: Beautiful interface for day and night - Privacy First: Your data is encrypted and securely protected PERFECT FOR - Busy professionals managing multiple deadlines - Parents tracking school events and bills - Students organizing assignments and exams - Anyone who wants to stay organized effortlessly SUBSCRIPTION PLANS - Free: Limited local scans with on-device processing - Trial: 50 cloud scans within 7 days to try premium features - Pro: 300 cloud scans per month with premium AI - Pay-as-you-go: Purchase AI credits for flexible usage Download SnapDue today and transform how you manage deadlines! Privacy Policy: https://snapdue.app/privacy Terms of Use: https://snapdue.app/terms Support: support@snapdue.app

Screenshots

Si3 screens
SnapDue3 screens

Verdict

The call

The clearest difference is in-app purchases: Si at none against SnapDue's 7. Si also leads on iOS requirement (9.1 vs 15.6). SnapDue's advantage is update cadence (weekly vs every 5 months). On price, ads 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. SnapDue sells 7 in-app purchases, starting at $4.99 per month. Si asks for nothing beyond the download.

UpkeepUpdate frequency

Si ships an update every 5 months, SnapDue weekly. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

Scorecard3 real differences Β· 3 level
Si versus SnapDue: the parameters behind the verdict, then further details
ParameterSiSnapDue
PriceFreeFree
Update frequencyEvery 5 monthsWeekly β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPodiPhone, iPad, iPod β€” better
Requires iOS9.1 β€” better15.6
Further details β€” not scored
Size12 MB80 MB
Age rating4+4+
Developerζ—­ζ—₯δΈœζ–ΉAB&T Technology Investment Joint Stock Company

In-app purchases

None

Si

No in-app purchases

7 purchases

SnapDue

Subscriptions2
  • Snapdue Pro Monthly7 Days trial$4.991 Month
  • Snapdue Pro Annual7 Days trial$39.991 Year
One-time5
  • 10 AI Credits$0.99
  • 25 AI Credits$1.99
  • 50 AI Credits$2.99
Show 2 more
  • 100 AI Credits$4.99
  • 250 AI Credits$9.99

Questions

Is Si free?
Si is free to download, with no in-app purchases.
Is SnapDue free?
SnapDue is free to download, with in-app purchases available.
Do Si or SnapDue have ads?
Neither Si nor SnapDue shows ads.
Which is updated more often, Si or SnapDue?
Si ships an update every 5 months, and SnapDue weekly. Most recently, Si was updated on November 11, 2026 and SnapDue on November 5, 2026.

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