Firefly III
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Comparison · Finance
PayFit vs SolidInvoice
A side-by-side editorial comparison of PayFit and SolidInvoice — release velocity, themes, recent moves, and the top alternatives to consider.
PayFit vs SolidInvoice: at a glance
| Feature | PayFit | SolidInvoice |
|---|---|---|
| Sector | Finance | Finance |
| Velocity score | 0.0 | 5.0 |
| Sparks · 30d | 0 | 0 |
| Top themes | payroll, hr, api, france | invoicing, self-hosted, security-patches, payments |
| Last editorial update | 6mo ago | 3d ago |
| Website | — | Visit → |
What is PayFit?
Payroll platform's developer changelog has slowed from monthly in 2024 to three releases across all of 2025.
PayFit is a payroll and HR platform with deep France and UK coverage. The developer-facing changelog ran monthly through 2024 but slowed to three releases in 2025 — workingTimeModality and exemption fields on French contract endpoints (December), retroactive 24-month accountingV2 document generation (August), and absence status filtering (June). 2024 entries fill the rest of the recent window.
What is SolidInvoice?
SolidInvoice 3.1.3 patches payment settling and clears 12 Symfony advisories.
SolidInvoice, the self-hosted invoicing app, is in a patch cycle on 3.1. The 29 October trio brought custom invoice templates, invitation expiry and a fixed upgrade path with migrations at startup or as a Helm pre-upgrade job. 3.1.3 follows with fixes: invoices paid through the API or MCP are only marked paid once the payment settles, the revenue chart counts each month once, and a Symfony bump clears 12 security advisories.
PayFit vs SolidInvoice: editorial side-by-side
PayFit
0.0FINANCE
Payroll platform's developer changelog has slowed from monthly in 2024 to three releases across all of 2025.
◆ Current state
PayFit is a payroll and HR platform with deep France and UK coverage. The developer-facing changelog ran monthly through 2024 but slowed to three releases in 2025 — workingTimeModality and exemption fields on French contract endpoints (December), retroactive 24-month accountingV2 document generation (August), and absence status filtering (June). 2024 entries fill the rest of the recent window.
◆ Where it's heading
The public developer changelog has clearly deprioritized. The 2025 entries are field additions and existing-endpoint improvements rather than new product surfaces. PayFit may be making fewer partner-facing changes, or simply moving partner communication off the public changelog.
◆ Prediction
Without more recent data the safe bet is continued slow cadence on the developer changelog with primarily incremental field additions. A return to monthly cadence would be the early signal that PayFit is reinvesting in the partner ecosystem.
SolidInvoice
5.0FINANCE
SolidInvoice 3.1.3 patches payment settling and clears 12 Symfony advisories.
◆ Current state
SolidInvoice, the self-hosted invoicing app, is in a patch cycle on 3.1. The 29 October trio brought custom invoice templates, invitation expiry and a fixed upgrade path with migrations at startup or as a Helm pre-upgrade job. 3.1.3 follows with fixes: invoices paid through the API or MCP are only marked paid once the payment settles, the revenue chart counts each month once, and a Symfony bump clears 12 security advisories.
◆ Where it's heading
After the large 3.0 release in June, work has moved to hardening: upgrade paths, packaging (Snap, static PHP builds) and correctness in payments and reporting. The mention of MCP payments shows AI-agent access is already wired into billing, though the entries don't detail it.
◆ Prediction
Expect more 3.1.x patches on packaging and payment edge cases; the entries don't signal what 3.2 will contain.
Alternatives to PayFit and SolidInvoice
Other Finance products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either PayFit or SolidInvoice.
Shift4
Shift4 Venue Q4-R2 is on canary venues now, with global release set for November 17.
Payhawk
Payhawk adds SWIFT payment tracking and a DualEntry ledger sync as ERP coverage widens
TaxDome
TaxDome Pipelines now remember your filters, and long task names stop getting cut off.
LNbits
LNbits 1.7.1 follows the urgent 1.7.0 fix by rotating auth keys.
Kolleno
Kolleno is stretching from collections software toward the whole cash cycle.
See all PayFit alternatives → · See all SolidInvoice alternatives →
Recent activity from PayFit and SolidInvoice
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3d agoSolidInvoiceSolidInvoice 3.1.3 fixes payment settling, clears 12 advisories
- 15d agoSolidInvoiceSolidInvoice 3.1.0: custom invoice templates, invitation expiry
- 15d agoSolidInvoiceSolidInvoice 3.1.1: post-3.1.0 bug fixes
- 15d agoSolidInvoiceSolidInvoice 3.1.2 fixes the broken in-app upgrade path
- 2mo agoSolidInvoiceInvoice lines now say '1 hour' instead of '1 hours'
- 4mo agoSolidInvoiceRelease 3.0.1
- 11mo agoPayFitDecember 2025 Improvements
- 1y agoPayFitRetroactive generation of accountingV2 FR documents
- 1y agoPayFitImproved absences retrieval
- 2y agoPayFitOctober improvements
- 2y agoPayFitSeptember improvements
- 2y agoPayFitAugust improvements
Frequently asked questions
What is the difference between PayFit and SolidInvoice?
They serve adjacent needs but don't currently overlap on shipped themes. SolidInvoice is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is PayFit better than SolidInvoice?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. SolidInvoice is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Finance products to evaluate alongside.
What are the best alternatives to PayFit?
Top PayFit alternatives in Finance are ranked by recent ship velocity. Browse the "PayFit alternatives" section above for the current picks, or visit /alternatives/payfit for the full list with editorial commentary on each.
What are the best alternatives to SolidInvoice?
Top SolidInvoice alternatives in Finance are ranked by recent ship velocity. Browse the "SolidInvoice alternatives" section above for the current picks, or visit /alternatives/solidinvoice for the full list with editorial commentary on each.