Comparison

Knock Knock V vs Crispy

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

Head to head
About

Knock Knock V

Create and share immersive experiences by curating passions in personalized rooms. Transform journeys into interactive stories with photos and music. Customize your profile and engage with moments creatively.

Highlights
  • Create personalized rooms for passions
  • Share interactive stories with photos and music
  • Customize profiles with themes and music
  • Engage with moments using stickers and elements
  • Explore communities and share life moments
Read full description

Knock Knock is the ultimate social platform for creating, sharing, and exploring immersive experiences. It’s more than just posts—Knock Knock lets you: • Create Rooms: Curate your passions and interests in personalized spaces. Share your favorite memories, hobbies, or adventures all in one place. • Share Tickets: Transform your journeys or events into dynamic, interactive stories with photos, music, and more. Perfect for travel, special occasions, or milestones. • Customize Profiles: Express yourself with unique backgrounds, themes, and music that make your profile truly yours. • Engage with Stories: Share your moments creatively with stickers, interactive elements, and a personal touch. Explore a world where creativity meets connection. Whether you’re documenting your travels, building a community, or sharing life’s moments, Knock Knock redefines the way you connect. Download Knock Knock and turn your life’s journey into something unforgettable.

About

Crispy

Features
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Stop choosing between 4K quality and file size. You filmed it in 4K. Then WhatsApp rejected it for being too big. You tried another compressor — and it dumped your footage down to 1080p, ruining the quality you bought your iPhone for. Crispy fixes that. Crispy is a video compressor built around a single promise: shrink your file size dramatically without throwing away your resolution. A 500 MB 4K clip becomes 50 MB — still in true 4K. Then when Instagram, TikTok, or Reels re-compresses your upload, they have far less quality left to butcher. — WHY CRISPY IS DIFFERENT — - Keep your 4K. Most compressors quietly downscale to 1080p or 720p to hit smaller file sizes. Crispy uses smart bitrate compression so 4K stays 4K, HDR stays HDR. - 100% on-device. Your videos never leave your iPhone. No cloud uploads, no servers, no accounts, no tracking. Compress on a plane, in the subway, anywhere. - Built on Apple AVFoundation. Native Apple video technology — not a hacky FFmpeg wrapper. Faster encoding, lower battery drain, full HEVC and H.264 support. - No watermarks. Ever. — ONE-TAP PRESETS FOR EVERY PLATFORM — Why fiddle with bitrate sliders? Crispy includes 15+ optimized presets: - WhatsApp — fits the 16 MB attachment limit - Instagram Reels — vertical, platform-perfect bitrate - TikTok — optimal upload spec - YouTube Shorts — 9:16 ready - X (Twitter) — under the upload cap - Telegram, Discord, Signal - Gmail, Outlook, iCloud Mail — email-friendly sizes - Save to Photos — storage saver mode One tap. Done. No guesswork. — FEATURES YOU'LL ACTUALLY USE — - Batch compression — queue dozens of videos at once - Custom mode — full control over resolution, bitrate, frame rate, codec (H.264 / HEVC) - Resize and crop for any aspect ratio - Trim before compressing — drop the parts you don't need - Metadata preserved — keep dates, location, and HDR data - Built-in duplicate video scanner — find and remove identical clips eating your storage - MP4, MOV, HEVC, H.264 supported - Estimated output size shown before you compress - Dark Mode, Dynamic Type, VoiceOver — fully accessible — WHO IT'S FOR — Content creators who shoot in 4K and need to upload without quality loss. Travelers and parents whose 256 GB iPhones are full of memories. Anyone who's ever stared at the "file too large" error in WhatsApp. Editors who need to send proxies. People who care that their videos look as good as the day they were filmed. — PRIVACY-FIRST. ALWAYS. — Crispy does zero cloud processing. Your videos are compressed entirely on your iPhone's chip. We don't see them. We can't see them. There's no upload, no analytics on your content, no third-party SDKs touching your footage. If you're tired of compressor apps that quietly ship your camera roll to a server somewhere, this is the one. — FREE WITH ADS, OR AD-FREE FOREVER — Crispy is free to use with all features unlocked — supported by ads. Don't want to see ads? A one-time "Remove Ads" purchase removes them permanently. No subscriptions, no recurring charges. Pay once, enjoy forever. Download Crispy today. Compress without compromise.

Screenshots

Knock Knock V4 screens
Crispy4 screens

Verdict

The call

The clearest difference is in-app purchases: Knock Knock V at none against Crispy's 1. Knock Knock V also leads on ads (none vs shown) and update cadence (every 5 days vs every 2 months). On price, 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

Both are free to download. Crispy sells 1 one-off in-app purchase. Knock Knock V asks for nothing beyond the download.

UpkeepUpdate frequency

Knock Knock V ships an update every 5 days, Crispy every 2 months. Both last shipped on September 17, 2026.

Scorecard3 real differences · 6 level
Knock Knock V versus Crispy: the parameters behind the verdict, then further details
ParameterKnock Knock VCrispy
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 5 days — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size167 MB17 MB
Age rating17+4+
Developersulaiman salemFaruk Sengul

In-app purchases

None

Knock Knock V

No in-app purchases

1 purchases

Crispy

One-time1
  • Remove Ads$29.99

Questions

Is Knock Knock V free?
Knock Knock V is free to download, with no in-app purchases.
Is Crispy free?
Crispy is free to download, with in-app purchases available.
Do Knock Knock V or Crispy have ads?
Crispy shows ads; Knock Knock V does not.
Which is updated more often, Knock Knock V or Crispy?
Knock Knock V ships an update every 5 days, and Crispy every 2 months. Most recently, Knock Knock V was updated on September 17, 2026 and Crispy on September 17, 2026.

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