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Screenshots

  • Lieutenant Guillaume screenshot 1
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About Lieutenant Guillaume

The accounting app that helps freelancers make the right decisions. Lieutenant Guillaume is set to revolutionize your day-to-day life as an entrepreneur: invoicing, document collection, cash-flow forecasting, dashboards, and more. DASHBOARDS – Your performance in real time • Track your performance in real time thanks to Artificial Intelligence; • Benefit from clear, useful charts tailored to your needs. DOCUMENT COLLECTION – Keep your accounts up to date • Lieutenant Guillaume turns your smartphone camera into a scanner. Once scanned, documents are instantly classified and recorded in your accounts; • Easily transfer documents from your smartphone directly into Lieutenant Guillaume. MESSAGING – Your accountant, always by your side • A single, direct, and secure place to communicate with your accountant; • Get quick answers to your questions. OVERVIEW – Your entire accounting in your pocket • Access key figures of your business at any time, such as turnover, outstanding invoices, or cash position; • Centralize invoices and documents in one place. Retrieve customer and supplier histories in just one click. CASH FLOW – Anticipate the future • Based on your expected income and expenses, Lieutenant Guillaume estimates your cash position in 7 days, 14 days, or at the end of the month; • Synchronize your bank accounts and track your transactions at a glance. INVOICING – Invoice directly from your phone • Stuck in an elevator? Pull out your phone and send invoices or quotes in seconds; • Create a list of products and services to reuse in your invoices and save time. Other features available on desktop: • Automated payment reminders; • Invoice payments via QR codes or SEPA payment slips; • Custom analysis dashboards; • Email inbox synchronization to automatically import invoices. Feel free to contact us at [email protected] to share your feedback on Lieutenant Guillaume. Your input is our greatest asset to move forward, innovate, and continuously improve our tools.

What’s new

Version 6.8.1 · Updated September 5, 2026

We are continuously improving Lieutenant Guillaume. Download the latest version to enjoy new features and optimisations. This update includes various improvements and general bug fixes. Do you like the app? Feel free to rate it! Your feedback helps us to continuously improve Lieutenant Guillaume. Any questions? Contact us at: [email protected].

App privacy

The developer, Horus Software, reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Identifiers: User ID

Used for: App Functionality

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Diagnostics: Crash Data
  • User Content: Photos or Videos

Used for: App Functionality, Other Purposes

Alternatives to Lieutenant Guillaume

Looking for apps like Lieutenant Guillaume? Here are 6 similar apps on the App Store. The highest rated is Spendar - Expense Tracker (5.0/5), and all 6 are free to download.

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