Firefly III
Firefly III's develop builds continue into October 21, still with no changelog.
Comparison · Finance
Increase vs Shift4
A side-by-side editorial comparison of Increase and Shift4 — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:payments
Increase vs Shift4: at a glance
| Feature | Increase | Shift4 |
|---|---|---|
| Sector | Finance | Finance |
| Velocity score | 3.8 | 5.0 |
| Sparks · 30d | 0 | 0 |
| Top themes | banking-as-a-service, payments, compliance, api | restaurant pos, payments, gift cards, loyalty |
| Last editorial update | 2mo ago | 6d ago |
| Website | Visit → | — |
What is Increase?
A banking-as-a-service API that now sells compliance and blockchain rails, not just payments
Increase ships a quarterly newsletter rather than a running changelog, so each entry bundles a quarter of API work. The last three quarters have moved past core payment rails into the surrounding infrastructure: managed compliance, entity onboarding sessions, 3D Secure, push provisioning and IP-restricted API keys. SDK coverage has widened to C#, PHP and Ruby, and the documentation was reworked to be readable by LLMs.
What is Shift4?
Shift4 posts Gift Card & Loyalty 26.2.1 notes in three languages ahead of an October 21 release.
Shift4 runs several release clocks: Venue bundles on a pre-release, canary and global cycle; DataNow reporting under Canopy 2.0; weekly Customer Hub builds; and now Gift Card & Loyalty releases. Q3-R3 reached all venues on 30 September and took its first global patch, POS v2.65.4, on 8 October. On October 16 Shift4 published Gift Card & Loyalty 26.2.1 notes in English, Portuguese and French for a general release on October 21, but the feed carries no feature detail.
Increase vs Shift4: editorial side-by-side
Increase
3.8FINANCE
A banking-as-a-service API that now sells compliance and blockchain rails, not just payments
◆ Current state
Increase ships a quarterly newsletter rather than a running changelog, so each entry bundles a quarter of API work. The last three quarters have moved past core payment rails into the surrounding infrastructure: managed compliance, entity onboarding sessions, 3D Secure, push provisioning and IP-restricted API keys. SDK coverage has widened to C#, PHP and Ruby, and the documentation was reworked to be readable by LLMs.
◆ Where it's heading
The arc runs from moving money to operating a bank program end to end. Early quarters added rails (FedNow, Push-to-Card, check transfers); recent ones add the compliance, onboarding and dispute machinery a customer would otherwise build or buy separately. Q2 2026 adds blockchain transfers alongside managed compliance, and flags cross-border payments and lending APIs as next.
◆ Prediction
Expect the cross-border payments and lending APIs named in the Q2 2026 letter to ship as the next quarter's headline, extending the same pattern of absorbing adjacent financial products into the core API.
Shift4
5.0FINANCE
Shift4 posts Gift Card & Loyalty 26.2.1 notes in three languages ahead of an October 21 release.
◆ Current state
Shift4 runs several release clocks: Venue bundles on a pre-release, canary and global cycle; DataNow reporting under Canopy 2.0; weekly Customer Hub builds; and now Gift Card & Loyalty releases. Q3-R3 reached all venues on 30 September and took its first global patch, POS v2.65.4, on 8 October. On October 16 Shift4 published Gift Card & Loyalty 26.2.1 notes in English, Portuguese and French for a general release on October 21, but the feed carries no feature detail.
◆ Where it's heading
Release discipline remains the visible story: announced dates, staged rollouts and patches after each global bundle. Publishing the loyalty notes in three languages points to an international merchant base for the stored-value products, and Customer Hub keeps wiring Payment Links into adjacent systems one integration at a time.
◆ Prediction
Gift Card & Loyalty 26.2.1 should ship on October 21 as announced; what it changes can't be read from the entries. A second Q3-R3 venue patch is also plausible, as Q3-R2 needed two.
Alternatives to Increase and Shift4
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 Increase or Shift4.
Stigg
Stigg shows card brand and wallet type on payment methods as its billing reach widens.
GOAT.tax
GOAT.tax adds Form 6765 Section G reporting for large R&D credit filers.
Kill Bill
Kill Bill keeps two release lines alive with small invoice-template changes.
InvoiceShelf
InvoiceShelf 3.0 alphas let Claude, ChatGPT and Cursor draft and send invoices.
Zluri
Zluri is turning SaaS management into identity governance, and Segregation of Duties is the pivot.
See all Increase alternatives → · See all Shift4 alternatives →
Recent activity from Increase and Shift4
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 6d agoShift4Novidades para os programas de Cartão-Presente e Fidelidade: Promoção 26.2.1
- 6d agoShift4Notes liées aux déploiements : Promotion 26.2.1
- 6d agoShift4Gift Card & Loyalty 26.2.1 feature release set for October 21
- 15d agoShift4Shift4 Venue Release Notes: Q3-R3 Global Patch
- 16d agoShift4Customer Hub w41: Payment Links extend to Opera
- 22d agoShift4Shift4 Venue Release Notes: Global Q3-R3
- 3mo agoIncreaseManaged compliance and blockchain transfers land in Q2 ⚡
- 6mo agoIncreaseEntity onboarding, 3D Secure and IP-restricted keys
- 9mo agoIncreaseFedNow, Push-to-Card and a Cards Disputes API
- 1y agoIncreaseEvent log filtering and check transfer work
- 1y agoIncreaseFile links, check deposit images, Apple Pay history
- 1y agoIncreaseOAuth applications, lockboxes and exports
Frequently asked questions
What is the difference between Increase and Shift4?
Both compete on the same themes — payments — within Finance. Shift4 is currently shipping more aggressively (velocity 5.0 vs 3.8), 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 Increase better than Shift4?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Shift4 is currently shipping more aggressively (velocity 5.0 vs 3.8), 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 Increase?
Top Increase alternatives in Finance are ranked by recent ship velocity. Browse the "Increase alternatives" section above for the current picks, or visit /alternatives/increase for the full list with editorial commentary on each.
What are the best alternatives to Shift4?
Top Shift4 alternatives in Finance are ranked by recent ship velocity. Browse the "Shift4 alternatives" section above for the current picks, or visit /alternatives/shift4 for the full list with editorial commentary on each.