FIDSUD Expert vs Lieutenant Guillaume
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FIDSUD Expert
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Rejoindre FIDSUD, c'est répondre plus efficacement aux attentes et aux besoins diversifiés des clients qui exigent plus de services et de conseils dans tous les domaines : comptabilité, fiscalité, création d'entreprise, conseil et gestion de l'entreprise, gestion des ressources humaines, gestion patrimoniale, financement, transmission, etc. Notre application vous permet d'accéder à votre comptabilité en ligne, à l'actualité juridique fiscale et sociale, et de nous géolocaliser. FIDSUD est implanté dans 3 régions et 12 départements du Sud-Ouest et de la Vallée du Rhône Régions Nouvelle-Aquitaine Occitanie Auvergne-Rhône-Alpes Départements Corrèze Lot-et-Garonne Tarn-et-Garonne Haute-Garonne Ariège Tarn Aude Hérault Gard Ardèche Drôme Isère
Lieutenant Guillaume
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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 hello@lieutenantguillaume.com to share your feedback on Lieutenant Guillaume. Your input is our greatest asset to move forward, innovate, and continuously improve our tools.
Screenshots
Verdict
The clearest difference is update cadence: Lieutenant Guillaume at every 3 weeks against FIDSUD Expert's every 5 months. FIDSUD Expert's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.4). On price, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
FIDSUD Expert ships an update every 5 months, Lieutenant Guillaume every 3 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.
| Parameter | FIDSUD Expert | Lieutenant Guillaume |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 47 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | NETexcom Groupe Informatique | Horus Software |
In-app purchases
FIDSUD Expert
No in-app purchases
Lieutenant Guillaume
No in-app purchases
Questions
Is FIDSUD Expert free?
Is Lieutenant Guillaume free?
Do FIDSUD Expert or Lieutenant Guillaume have ads?
Which is updated more often, FIDSUD Expert or Lieutenant Guillaume?
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