Comparison

HourPlus vs Archi

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

Head to head
About

HourPlus

Features
Read full description

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

About

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.

Highlights
  • 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
Features
Read full description

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

HourPlus2 screens
Archi4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. HourPlus sells 4 one-off in-app purchases. Archi asks for nothing beyond the download.

UpkeepUpdate frequency

HourPlus ships an update every 3 weeks, Archi weekly. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.

Scorecard3 real differences · 7 level
HourPlus versus Archi: the parameters behind the verdict, then further details
ParameterHourPlusArchi
PriceFreeFree
Rating—2.0 (1 ratings) — better
Positive reviews—75.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Paid
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better26.0
Further details — not scored
Size1 MB57 MB
Age rating4+4+
DeveloperJurgen HollfelderArne Stenmanns

In-app purchases

4 purchases

HourPlus

One-time4
  • Small Tip$1.00
  • Medium Tip$2.00
  • Large Tip$5.00
Show 1 more
  • Generous Tip$10.00
None

Archi

No in-app purchases

Questions

Is HourPlus free?
HourPlus is free to download, with in-app purchases available.
Is Archi free?
Archi is free to download, with no in-app purchases.
Do HourPlus or Archi have ads?
Neither HourPlus nor Archi shows ads.
Which is updated more often, HourPlus or Archi?
HourPlus ships an update every 3 weeks, and Archi weekly. Most recently, HourPlus was updated on September 18, 2026 and Archi on September 23, 2026.

Other comparisons