Zettelheld vs Nox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zettelheld
Organize and send your receipts and documents easily. Capture paper receipts with your camera, import digital ones, and categorize them with custom labels. Bundle labeled items into ZIP files for convenient sharing.
- Collect mail receipts locally
- Scan paper receipts with camera
- Label receipts for organization
- Export bundled receipts as ZIP
- Automatic mail import (Pro)
- Background sync (Pro)
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Zettelheld collects mail and paper receipts directly on your iPhone. Connect your mailbox, import PDFs or images, or photograph paper receipts. Add labels to your receipts - each label creates its own outbox. Example: label your tax documents with "Tax advisor" and send them together as a ZIP file. What Zettelheld can do in the current MVP: - collect mail receipts locally - scan paper receipts with the camera - label receipts and export / send them together - export one year of documents as a ZIP file Privacy first: - credentials are stored securely in the iPhone Keychain Free / Pro: - the free version includes 3 sends - Zettelheld Pro unlocks unlimited export, automatic mail import, and background sync after that Pricing, trial period, and subscription management are handled directly by Apple. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Nox
Securely store your most sensitive personal information locally on your device. This app uses strong encryption to protect identities, financial details, medical records, and more, with no cloud storage involved. Features include biometric unlock and expiry reminders for your documents.
- On-device encrypted storage
- Biometric unlock (Face ID/Touch ID)
- Expiry reminders for documents
- Encrypted backup and restore
- Screenshot protection
- Store identity, financial, medical, and travel data
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Your most sensitive information belongs on your device — not in the cloud, not on someone else's server. Nox is a zero-knowledge personal vault that keeps everything locally, encrypted on your device in the iOS Keychain. What you can store – Identity: Passports, Driver's Licenses, National IDs, Birth Certificates – Financial: Bank accounts, Credit cards, Crypto wallets, Tax IDs – Medical: Health insurance, Blood type, Emergency contacts, Vaccination records – Travel: Frequent flyer cards, Hotel loyalty, Global Entry, Travel insurance – Vehicle: Car insurance, Registration, Roadside assistance – Other: Wi-Fi passwords, Safe combinations, Software licenses, Loyalty cards Privacy by design We have no servers. We have no access to your data. Your PIN is never stored — only a cryptographic hash. Backup files are encrypted on your device with a key derived from your PIN, so only you can open them. This is not a privacy policy. This is how the app works. Smart features – Scan passports and ID cards to fill in their details, entirely on-device – Face ID / Touch ID unlock – Expiry reminders for documents and cards – Encrypted backup & restore – Screenshot protection Nox Pro Unlock unlimited item storage, expiry reminders, custom categories, and custom item types with a Pro subscription or one-time lifetime purchase. Privacy Policy: https://noxappdev.github.io/nox-privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
Screenshots
Verdict
The clearest difference is update cadence: Nox at weekly against Zettelheld's every 2 months. Nox also leads on ratings volume (6 vs 1). On price, rating, review sentiment and ads 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. Zettelheld sells 1 in-app purchase, starting at $1.99 per month and Nox sells 2 in-app purchases, starting at $11.99 per year. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Zettelheld against 5.0 for Nox. That said, the two scores are not equally well evidenced: Nox has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Zettelheld ships an update every 2 months, Nox weekly. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.
| Parameter | Zettelheld | Nox |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (6 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.5 | 15.1 — better |
| Further details — not scored | ||
| Size | 65 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Christoph Pieper | Nour Ahdi |
Customer experience
Zettelheld
Nox
In-app purchases
Zettelheld
- Zettelheld Pro Monthly14 Days trial$1.991 Month
Nox
- Nox Pro — Annual$11.991 Year
- Nox Pro — Lifetime$22.99





