Comparison

Key vs Sift & Remember

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

Head to head
About

Key

This application uses your device's microphone to capture and decode dual-tone multi-frequency (DTMF) signals in real-time. It displays the decoded numbers instantly on your screen, making it a useful tool for professionals and tech enthusiasts.

Highlights
  • Real-time DTMF signal decoding
  • Uses device microphone
  • Displays decoded numbers instantly
  • Suitable for professionals
  • Useful for tech enthusiasts
Features
Read full description

Key-Tone-Decoder: Real-Time DTMF Signal Decoder Dual-tone multi-frequency (DTMF) signaling is a telecommunication system that facilitates communication between telephone equipment, other devices, and switching centers using voice-frequency tones over telephone lines. Key-Tone-Decoder leverages your iPhone's microphone to capture these DTMF signals, instantly decoding them and displaying the decoded numbers on your screen in real-time. Perfect for professionals and tech enthusiasts, Key-Tone-Decoder makes it easy to decode DTMF signals right from your device.

About

Sift & Remember

Features
Read full description

Save links to read later, keep screenshots with context, and organize notes and ideas in one place. Sift & Remember is a bookmark manager and personal organizer for the things you want to come back to: recipes to try, places to visit, shopping ideas, useful articles and everyday thoughts. For adults aged 18 and older. SAVE THE THING. REMEMBER WHY. - Paste a link and add a comment about why it matters. - Keep a screenshot in your local library, with optional typed or pasted text. - Capture a short thought before you forget it. - Search your saves and browse Buy, Go, Do and Read collections. - Mark items done and use undo when you need it. OPTIONAL AI, WITH YOUR PERMISSION Choose AI for a useful title, summary, category and key details. Before sending, Sift names Google Gemini and its Supabase backend and explains the selected data shared: a link URL, public page content and your comment; a thought; or screenshot text you type or paste, plus your locale and timezone. AI starts off for every new save. Choose Continue with AI to review permission, then Allow and send or Keep local. You can optionally remember permission for future items you choose on this account and device; that skips repeat prompts, not your choice of each item. Reset permission in You > AI privacy. Updated disclosures require a fresh choice. Screenshot images and filenames stay on your device. Sift does not scan your photo library or read text from images. Only screenshot text you type or paste is eligible for AI. AI can make mistakes and cannot read every website. Review results before relying on them. REDISCOVER YOUR SAVES Opt in to a weekend snapshot notification, scheduled for Saturday at 9:00 AM in your device timezone. See a local count of active saves across your collections. Notification permission and device settings affect delivery. 14-DAY FREE ACCESS Eligible verified-email accounts can choose one 14-day free-access period with unlimited saves and 20 successful AI enrichments total. No card or Apple purchase is required. Free access ends without a charge, does not renew, and never starts a paid subscription. Continuing afterward requires a separate purchase. SEPARATE PAID APPLE SUBSCRIPTIONS Monthly and yearly Sift Pro subscriptions include unlimited saves and 200 successful AI enrichments per UTC calendar month while active. Review your localized price, billing period and renewal terms beside the purchase button. Payment is charged to your Apple Account when you confirm a purchase, including during free access; it does not wait until free access ends. No free period is included with this purchase. Paid subscriptions automatically renew at the displayed price for the selected period unless canceled at least 24 hours before the current period ends. Manage or cancel in your Apple subscription settings. New saves require a signed-in account, active free access or a paid subscription, and an online access check, even with AI off. AI also requires internet access, available allowance and a supported service region. Usage and request-rate limits apply. After access ends, you can still view, search and delete existing saves. Your library stays on this device; signing in does not provide cloud sync or backup. Keep separate copies of important content. INPUT LIMITS - Screenshots: up to 5 MB each. - Thoughts and screenshot text: up to 300 characters. - Screenshot text for AI: at least 3 characters. Support: hello@solvvit.com Privacy: https://mindgameapps.com/apps/sift/privacy/ Terms: https://mindgameapps.com/apps/sift/terms/

Screenshots

Key4 screens
Sift & Remember4 screens

Verdict

The call

The clearest difference is price: Sift & Remember at Free against Key's $0.99. Key's advantage is in-app purchases (none vs 2). On 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

CostPrice · In-app purchases · Ads · Monetization

Sift & Remember is free to download; Key costs $0.99 up front. Sift & Remember sells 2 in-app purchases, starting at $4.99 per month. Key asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Key versus Sift & Remember: the parameters behind the verdict, then further details
ParameterKeySift & Remember
Price$0.99Free — better
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequency—Daily
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size1 MB23 MB
Age rating4+17+
DeveloperNANO ELECTRONICS RESEARCH MUHENDISLIK ARASTIRMA GELISTIRME LIMITED SIRKETIAli Abidi

In-app purchases

None

Key

No in-app purchases

2 purchases

Sift & Remember

Subscriptions2
  • Sift Pro Monthly$4.991 Month
  • Sift Pro Yearly$49.991 Year

Questions

Is Key free?
Key costs $0.99, with no in-app purchases.
Is Sift & Remember free?
Sift & Remember is free to download, with in-app purchases available.
Do Key or Sift & Remember have ads?
Neither Key nor Sift & Remember shows ads.

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