HourPlus vs Archi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HourPlus
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Hour Calc is the simple and intuitive calculator for adding and subtracting hours and minutes. Perfect for: • Tracking work hours • Calculating project time • Adding up time entries • Any time-based calculations Simply enter times in H:MM format and use + or - to calculate. The result is displayed instantly. Example: 1:22 + 1:01 = 2:23 Features: • Clean, easy-to-use interface • Add and subtract times • Support for negative results • Works offline • No ads
Archi
This app scans documents, extracts text and metadata using on-device AI and OCR, and syncs with a self-hosted server. It prioritizes user privacy with no cloud subscriptions or data sharing. Ideal for managing receipts, invoices, and personal records securely.
- On-device OCR with Apple Vision
- AI metadata extraction with Gemma 4
- Automatic title, tag, and correspondent suggestions
- Import PDFs and images via Share sheet
- Browse and search Paperless-NGX archive
- Offline queue for scanning
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Archi is the Paperless-NGX client for iPhone, iPad and Mac that runs AI and OCR entirely on your device — no cloud subscription, no data sharing, zero privacy compromises. Try it for free: the first 10 captures are included. After that, a one-time purchase unlocks the full version — no subscription, no cloud, no data collection. Note: AI metadata extraction requires a one-time download of the Gemma 4 model (approx. 2.4 GB) after installation. ■ WHAT ARCHI DOES Scan a document, recognize text, extract metadata — all in seconds, all locally. The document then lands neatly categorized in your self-hosted Paperless-NGX server. ■ ON YOUR DEVICE, NOT IN THE CLOUD • OCR with Apple Vision — fast, offline, free • AI metadata extraction with Google's Gemma 4 — runs directly on your iPhone, no server needed • Automatic title, tag and correspondent suggestions based on content • Import PDFs and images from other apps via the Share sheet ■ PAPERLESS-NGX INTEGRATION • Browse and manage your entire document archive • Full-text search across all documents • Filter by tags, document type and correspondent • Offline queue — scans saved locally until you're back online ■ REAL-WORLD USE CASES Tax Season: Scan every receipt, invoice and bill as it arrives. Archi automatically recognizes the date, vendor and amount — and suggests the right tags. Come April, your IRS paperwork is already done. Home Office & Business: Incoming invoices, delivery notes, contracts — Archi reads the document and proposes correspondent, document type and filing date without you lifting a finger. Medical & Insurance: Digitize EOBs, lab results, insurance policies and medical records securely. Your health data never leaves your device. No Wi-Fi? No Problem: Scan documents in the subway, in a basement archive or while travelling. Archi queues everything locally and syncs automatically when you're back online — unlike server-dependent alternatives. Homelab & Self-Hosting: Running Paperless-NGX on a Synology NAS, Proxmox, Docker or a Raspberry Pi? Archi was built for exactly your setup. No SaaS, no monthly fees, no vendor lock-in. ■ PRIVACY FIRST No account. No subscription. No cloud. Your documents stay on your device and your server — and nowhere else. All AI processing, all OCR, all metadata extraction runs exclusively on your iPhone. Archi never transmits document content to any external server — not Apple's, not Google's, not ours. ■ TECHNICAL DETAILS • AI model: Gemma 4 E2B INT4 (Google open weights) — runs fully on-device via LiteRT, Metal GPU accelerated • OCR: Apple Vision Framework — free, offline, privacy-preserving • Backend: Paperless-NGX (self-hosted, URL and token fully configurable) • Offline queue: SQLite-based, zero data loss when offline • On-device AI: iPhone 15 Pro or newer, or an iPad with 6 GB RAM (M-series). Scanning, uploading and your archive work on all supported devices — even without AI. • Runs on iPhone, iPad and Apple silicon Mac. Archi requires a self-hosted Paperless-NGX server.
Screenshots
Verdict
The clearest difference is in-app purchases: Archi at none against HourPlus's 4. Archi also leads on update cadence (weekly vs every 3 weeks). HourPlus's advantage is iOS requirement (17.0 vs 26.0). On price, 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. HourPlus sells 4 one-off in-app purchases. Archi asks for nothing beyond the download.
HourPlus ships an update every 3 weeks, Archi weekly. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.
| Parameter | HourPlus | Archi |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.0 (1 ratings) — better |
| Positive reviews | — | 75.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Paid |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 1 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Jurgen Hollfelder | Arne Stenmanns |
In-app purchases
HourPlus
- Small Tip$1.00
- Medium Tip$2.00
- Large Tip$5.00
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- Generous Tip$10.00
Archi
No in-app purchases









