Chapterize vs KrypterApp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chapterize
Easily add professional chapters to your podcasts with a unified workflow. Mark chapters while listening, add titles, images, and links, and export them for various platforms. Supports multiple audio file types and local transcript generation.
- Unified listening and chapter editing
- Add titles, images, and links to chapters
- Import chapters from text or JSON
- Export chapters for YouTube/show notes
- Generate local transcripts
- Supports MP3, M4A, and AIF files
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Chapterize is a complete post-production toolkit for podcasters. Add chapters, generate transcripts, export video, and keep an eye on your shows, all in one app that runs natively on iPhone, iPad, and Mac. CHAPTERS - Mark chapters as you listen, with a scrubbable waveform and one tap to drop a chapter at the playhead - Full chapter support: titles, artwork, and links - Import chapters from YouTube-style text, or from markers you set in Logic Pro and other DAWs - Copy your chapter list as text for YouTube or your show notes - Work on several episodes at once with tabs TRANSCRIPTS - Generate transcripts on device with Apple's Speech APIs. Your audio is never uploaded anywhere. - Have transcription start automatically as soon as a file finishes importing - Import and export SRT and VTT subtitle files - Tap any line to jump to it, search the whole transcript, and drag chapter markers to retime them SHOWS - Add your podcast by searching Apple Podcasts, or by pasting an RSS feed - See recent episodes, show notes, artwork, and your Apple Podcasts rating broken down by country - Copy episode links and embed codes, or download episode audio - Drop a new recording onto a show to start editing with the title and artwork already filled in VIDEO AND CLIPS - Export a full episode video with artwork, waveform, and either your chapter list or your transcript - Export short transcript clips with karaoke-style captions, ready for social media FILES - Opens MP3, M4A, MP4, M4B, WAV, and AIFF - Always exports MP3 with chapters embedded, so your episode works in every podcast app PRICING - Free to try: 5 exports and 5 transcripts - One simple purchase unlocks everything. No subscription. System Requirements - iOS or iPadOS 26 or later Privacy policy https://birchtree.productions/apps/chapterpod/privacy.html
KrypterApp
Encrypt any file or message with advanced, user-controlled cryptography. Your data is secured using your device's hardware and advanced algorithms, ensuring privacy without middlemen or servers. Share securely, knowing only your intended recipient can access your information.
- Encrypt any file type (photos, documents, videos)
- Send encrypted text messages
- Keys stored in Secure Enclave
- Post-quantum encryption (XWing)
- Password protection for double security
- No account or network connection required
- Authenticated encryption for sender verification
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Your private conversations deserve better than "end-to-end encrypted (trust us)." Krypter puts real encryption in your hands — no middlemen, no servers, no fine print. ENCRYPT ANYTHING Photos, documents, voice memos, videos — encrypt any file with HPKE (Hybrid Public Key Encryption) and share it safely. Only the person you choose can open it. Not us. Not Apple. Not anyone else. ENCRYPTED MESSAGES Send private text messages that only your recipient can read. Copy, paste, send through any channel — iMessage, WhatsApp, email, Signal, whatever. The message stays locked no matter where it travels. YOUR KEYS, YOUR RULES Krypter generates encryption keys inside your iPhone's Secure Enclave — the same chip that protects Face ID and Apple Pay. Your keys physically cannot leave the device. Not even Krypter can see them. SIMPLE FOR YOU, IMPOSSIBLE FOR THEM Add friends as trusted contacts. Encrypt files and messages with one tap. No technical knowledge needed — Krypter handles the hard math while you handle your life. PROVE WHO SENT IT HPKE authenticated encryption lets the recipient verify it really came from you — not someone pretending to be you. No certificates needed. No authorities. Pure cryptography. FUTURE-PROOF Quantum computers are coming. Krypter includes XWing post-quantum hybrid encryption (ML-KEM-768 + X25519) so your secrets stay secret — today and decades from now. ADD A PASSWORD Stack a pre-shared key on top of HPKE encryption for double protection. Even if someone has your public key, they still can't read your files without the password. FOUR ENCRYPTION CURVES • P-256 Secure Enclave — hardware-locked, non-extractable • P-521 — maximum-strength NIST curve • X25519 + ChaCha20-Poly1305 — fast, modern, battle-tested • XWing ML-KEM-768 — post-quantum hybrid, future-proof TRULY PRIVATE • No account required — ever • Not joking about the above point: not only not required, but not even able to create any sort of account • No network connections made by the app — fully offline by design • No data leaves your device • No analytics, no tracking, no telemetry • PIN lock with duress PIN support • Clipboard auto-clears after 30 seconds • Privacy screen when you switch apps • No ads, no paywalls BACKUP YOUR KEYS Export your software keys with military-grade password protection (PBKDF2, 120 million iterations). Restore anytime. Hardware keys stay sealed in your Secure Enclave — as it should be. STANDARDS-BASED Built on RFC 9180 HPKE, NIST P-256/P-521, X25519, AES-256-GCM, ChaCha20-Poly1305, and ML-KEM-768. No proprietary algorithms. No vendor lock-in. Your encrypted files use documented, open formats. Krypter is encryption the way it should be — yours.
Screenshots
Verdict
The clearest difference is review sentiment: KrypterApp at 100% against Chapterize's 0%. KrypterApp also leads on rating (5.0 vs 3.5) and in-app purchases (none vs 1). On price, ratings volume, 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. Chapterize sells 1 one-off in-app purchase. KrypterApp asks for nothing beyond the download.
KrypterApp holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 0% of Chapterize's written reviews are positive against 100% of KrypterApp's.
Chapterize ships an update weekly, KrypterApp every 3 days. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.
| Parameter | Chapterize | KrypterApp |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (2 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 2 |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Requires iOS | 26.0 | 18.6 — better |
| Further details — not scored | ||
| Size | 22 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Matt Birchler | Pavel Yeschenko |
Customer experience
Chapterize
KrypterApp
In-app purchases
Chapterize
- Full Unlock$19.99
KrypterApp
No in-app purchases





