SoloFlow vs Abby: which tool for micro-entrepreneurs in 2026?

Abby has established itself as a reference for French auto-entrepreneurs: URSSAF filings, micro-business threshold tracking, invoicing. SoloFlow, which arrived in 2026, plays a different tune: a mobile-first mini-ERP, covering both Belgium and France, without a micro-business specialisation. With the obligation to receive electronic invoices approaching (1 September 2026), here is how the two honestly compare.

In short: micro specialist versus all-round tool

Abby is built for one specific status: the French auto-entreprise (micro-business). It handles URSSAF filings, tracks your revenue thresholds and adapts your invoices to the micro regime’s required wording. For that audience, it’s an excellent companion. SoloFlow, on the other hand, is not specialised in any status: it’s an all-round management tool (invoices, CRM, tasks, calendar) that follows your business whatever your legal regime.

This difference has an important consequence: Abby is optimised as long as you remain an auto-entrepreneur. The day you switch to a company structure, you have to change tools. SoloFlow imposes no such constraint.

Comparison table

Criterion	SoloFlow	Abby
Free invoicing	Yes (10 docs/month, 50 contacts)	Yes
Paid offer	€9.99/month or €99.99/year	€9-15/month (annual), €11-19/month (monthly)
Statuses covered	All (freelancer, company, small business)	Auto-entrepreneurs only
URSSAF filings / micro thresholds	No	Yes
Native mobile app	iOS + Android	Yes
Web app	Yes (app.soloflow.online)	Yes
Plateforme Agréée (FR)	Relies on A-Cube, a DGFiP-registered PA	Its own DGFiP-registered PA
Peppol (send + receive)	Yes, BE and FR	FR compliant
Built-in CRM	Yes	No
Tasks + calendar	Yes (native calendar sync)	No
Offline mode	Yes (real offline-first)	No

What Abby does better

Let’s acknowledge it plainly: for an auto-entrepreneur, Abby is hard to beat on its home turf.

The micro-business specialisation. Abby tracks your revenue thresholds (VAT exemption, micro caps), prepares your URSSAF filing and automatically applies the right wording to your invoices. It’s support engineered to the millimetre for that status, which SoloFlow doesn’t offer.

Its own Plateforme Agréée status. Abby is registered as a Plateforme Agréée (PA — French government-accredited platform) with the DGFiP, in its own name. A mark of regulatory solidity in the French reform.

Maturity on the French market. Abby is well established among auto-entrepreneurs, with a user base and a reputation that SoloFlow, more recent, doesn’t have yet.

What SoloFlow does better

Following your growth without changing tools. This is Abby’s structural limitation: it is “locked” to the micro-business regime. If you switch to a company structure (EURL, SASU…), you have to migrate to another solution. Since SoloFlow is not specialised in any status, it follows you whatever your regime. For a freelancer anticipating growth or a change of legal form, it’s a more future-proof choice.

A real mini-ERP. SoloFlow includes a CRM (Contact → Lead → Qualified → Client), tasks and a calendar synced with your device’s native calendar. You manage the client relationship, not just the invoicing. Abby remains focused on invoicing and micro tracking.

Belgium + France coverage and Peppol. SoloFlow handles sending and receiving Peppol invoices on both sides of the border and comes in 7 languages. Abby is French-market-only. In France, SoloFlow relies on A-Cube, a Plateforme Agréée registered with the DGFiP.

Real offline mode. You create and view your documents without a connection, and syncing happens afterwards. Useful on the move.

The right question: how long will you stay a micro-business?

The choice between Abby and SoloFlow largely depends on your trajectory. If you’re an auto-entrepreneur and intend to stay one, Abby offers you specific tax support (URSSAF, thresholds) that SoloFlow doesn’t have. If you see the micro-business as a stepping stone and anticipate switching to a company, or if you already want a complete management tool (clients, tasks, calendar) beyond simple invoicing, SoloFlow avoids a future change of tools.

On price, the two are close: Abby ranges from €9 to €15/month with annual billing (€11 to €19 monthly), and SoloFlow offers €9.99/month (or €99.99/year) for unlimited use, after a free version (10 documents/month). Until 31 December 2026, SoloFlow also offers free e-invoice receiving.

The French deadline, not to be underestimated

Choosing a tool isn’t just about comfort: it commits your compliance. In France, the electronic invoicing reform requires all businesses to receive invoices in electronic format from 1 September 2026, then requires small businesses, SMEs and micro-entrepreneurs to issue them from 1 September 2027. Going through a Plateforme Agréée (PA) is mandatory — 153 platforms were registered as of 14 July 2026. From September 2026, four new mandatory line items also appear on invoices, and non-compliant issuing is fined €50 per invoice.

In practice, an auto-entrepreneur will also need a tool connected to a Plateforme Agréée by 2027. Abby answers this by being registered as a PA in its own right; SoloFlow, by relying on A-Cube, a Plateforme Agréée registered with the DGFiP. Both cover you on this point — the difference lies elsewhere: Abby optimises your micro-business management as long as you keep that status, SoloFlow supports you beyond it and across two markets. If you don’t yet know where your business will take you in two or three years, this longevity criterion deserves as much attention as the sticker price today.

Which tool for which profile?

Choose Abby if: you’re an auto-entrepreneur, you want a tool that handles your URSSAF filings and watches your micro thresholds, and you don’t plan to change status in the short term.

Choose SoloFlow if: you want a tool that follows you beyond the micro-business, you’re looking for a mini-ERP (invoices + clients + tasks + calendar), you invoice in Belgium and France, or you often work offline.

FAQ

Does Abby work for a company, or only for micro-businesses?

Based on information published in July 2026, Abby is designed for auto-entrepreneurs (micro-businesses). If you switch to a company structure, you generally have to migrate to another tool. SoloFlow, not specialised in any status, works whatever your regime.

Does SoloFlow handle URSSAF filings?

No. SoloFlow offers no social-security or tax-filing module. If URSSAF and micro-threshold tracking is your priority, Abby is the better fit. SoloFlow focuses on invoicing and sales management.

Are both compliant with the French e-invoicing reform?

Abby is registered as a Plateforme Agréée with the DGFiP in its own name. SoloFlow relies on A-Cube, a Plateforme Agréée registered with the DGFiP. Reminder: receiving is mandatory from 1 September 2026, issuing for small businesses and micro-entrepreneurs from 1 September 2027.

Which should I choose if I’m starting as an auto-entrepreneur but aiming for growth?

If growth and a possible change of status are in your plans, SoloFlow saves you from having to change tools later. If you want above all to be well supported in your micro-business management right now, Abby fills that role with precision.

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To go further: our SoloFlow vs Indy comparison and our 2026 electronic invoicing guide.

Comparison written by the SoloFlow team based on publicly available information as of July 2026. Spotted an inaccuracy? Let us know: hello@soloflow.online