Comparison

SecDocKeeper vs Prep the day

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

Head to head
About

SecDocKeeper

Features
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Keep your most sensitive documents secure, local, and strictly in your hands. SecDockKeeper is a local-first, end-to-end encrypted vault designed for the files you cannot afford to lose or leak. Whether it's your passport, medical records, tax forms, or confidential contracts, SecDockKeeper ensures your data stays firmly on your device. There are no accounts to create, no cloud servers to trust, and absolutely zero telemetry. IMPORTANT: Your vault is secured by a master password known only to you. If you lose your password, no oneβ€”not even usβ€”can recover your data. CORE FEATURES Military-Grade Encryption: Your master password derives a 256-bit key on the device using Argon2id. Every single document gets its own AES-256-GCM data key (envelope encryption). Smart On-Device OCR: Automatically scan and tag imported images (like passports, IDs, and invoices). All text recognition happens entirely locally, meaning your data never leaves your phone. Total Organization: Group your documents into folders, apply color-coded tags, and filter with a single tap. All metadata, names, tags, and full-text search indexes are secured inside a locked SQLCipher database. Hidden "Stealth" Tags: Need plausible deniability? Create hidden tags that are stored only as HMAC hashes. They are entirely invisible in lists and autocomplete, revealing their linked documents only when you type the exact tag name into the search bar. Secure Split-Sharing: Safely share individual documents. Export a file as an encrypted .sdkblob and a separate .sdkkey.json. Send the file over one channel and the key over another for maximum security. Portable Offline Backups: Export your entire vault as a single, fully encrypted archive (blobs and database only, no key material). Easily restore it on a new device using your original master password. Biometric Convenience: Quickly unlock your vault using Face ID or Touch ID. Your master password remains safely sealed in your device’s platform keychain. Anti-Snoop Defaults: The app immediately auto-locks when sent to the background. Decrypted plaintext is strictly short-lived, and temporary viewing directories are automatically wiped every time the vault locks. ABSOLUTE PRIVACY We believe privacy is a default, not a feature. SecDockKeeper contains absolutely zero analytics and no third-party SDKs in the hot path. There are no network calls for document handling. The only journey your files take is from your device's file picker directly into your encrypted, on-device vault. OPEN SOURCE & AUDITABLE Trust requires transparency. SecDockKeeper is 100% open source under the Apache 2.0 license. Our cryptography, database schema, and import paths are fully auditable by anyone.

About

Prep the day

Features
Read full description

Prep the Day is a morning ritual for getting your day in order. Every morning, open the app and type out everything you need to do today β€” fast, messy, stream of consciousness. Don't think about order or priority. Just get it out of your head. Then the on-device AI takes over. It reads your dump, pulls out the real tasks, drops the routine "noise," and hands back a clean, prioritized list for the day. One brain dump in, one focused task list out β€” every morning. ON-DEVICE & PRIVATE β€’ All AI runs on your device using Apple Intelligence. Your text never leaves your iPhone or iPad. β€’ No account, no sign-in, no servers, no tracking. β€’ Works without an internet connection. WHY IT WORKS β€’ A cluttered head makes for a scattered day. Writing it down clears it. β€’ The AI does the sorting so you don't have to organize before you've even started. β€’ Five minutes in the morning saves hours of "what was I supposed to do today?" FEATURES β€’ Brain dump input β€” type everything on your mind β€’ On-device AI task extraction, powered by Apple Intelligence β€’ Noise filtering β€” trivial, routine items are dropped β€’ Priority sorting β€” the list comes back ordered β€’ Edit freely β€” add, rename, complete, and delete tasks β€’ Session history β€” every morning's prep is saved on-device β€’ English and Japanese Requires a device that supports Apple Intelligence, with Apple Intelligence turned on. Prep the day. Then go live it.

Screenshots

SecDocKeeper4 screens
Prep the day3 screens

Verdict

The call

The clearest difference is iOS requirement: SecDocKeeper at 15.5 against Prep the day's 26.0. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference Β· 4 level
SecDocKeeper versus Prep the day: the parameters behind the verdict, then further details
ParameterSecDocKeeperPrep the day
PriceFreeFree
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.5 β€” better26.0
Further details β€” not scored
Size66 MB2 MB
Age rating4+4+
DeveloperValentin SobolevMikoto Perut

In-app purchases

None

SecDocKeeper

No in-app purchases

None

Prep the day

No in-app purchases

Questions

Is SecDocKeeper free?
SecDocKeeper is free to download, with no in-app purchases.
Is Prep the day free?
Prep the day is free to download, with no in-app purchases.
Do SecDocKeeper or Prep the day have ads?
Neither SecDocKeeper nor Prep the day shows ads.

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