What APS software is, and why it matters for smaller shops
Definition: APS software
Advanced Planning and Scheduling (APS) software builds finite-capacity production schedules from real constraints (machines, people, materials, setups and due dates), instead of the infinite-capacity assumptions most ERP and MRP scheduling uses.
"APS" covers several different kinds of product:
- a standalone optimization engine run by a planner
- a visual finite scheduler
- an APS/MES suite
- a production decision layer that recomputes as the floor changes
They share finite capacity and little else. They differ in who owns the model, how long implementation takes, and what the planner still has to do each day.
Classic APS is powerful, but it was often built for larger plants with a dedicated planning team to implement and tune it. Most small and mid-size manufacturers need the finite-capacity result without a long project, a full-time model owner, or an ERP replacement.
How to choose APS software for a small or mid-size manufacturer
- What happens after a disruption. When a machine goes down or an operator is out, does the system recompute a feasible plan for the whole shop, or does a planner re-sequence by hand?
- People as constraints. Does it schedule individual operators, skills and shifts, or only machine hours?
- High-mix realities. Sequence-dependent setups, pallets and fixtures, outside processing, and material readiness.
- ERP fit. Does it run on top of the ERP you already have (which ones, and how), or does it assume a new ERP?
- Implementation and ownership. How long to a usable schedule, and who maintains the model after go-live: a planner, or a services engagement?
- Deployment. Cloud or installed software, and security requirements such as SOC 2 or ITAR.
- Pricing model. Published subscription, one-time license, or quote-based.
APS comparison table (September 2026)
| Vendor | Best for | Scheduling approach | People / skills modeling | Deployment / implementation | ERP fit | Pricing public? |
|---|---|---|---|---|---|---|
| Skody AI | High-mix discrete SMBs keeping their ERP, whose schedule breaks during the day | Production decision layer: automatic finite recompute across the whole shop in under a minute, due dates first, then throughput | Yes: operators, skills and shifts as constraints | Cloud (ITAR-ready Gov Cloud, SOC 2 Type II). Most customers see value within weeks. | Runs on top of ProShop, Acumatica, Fulcrum, JobBOSS² and SYSPRO | Yes: from $1,500/month |
| CAI PlanetTogether | Plants with a dedicated planner wanting deep what-if planning and broad connectors | Constraint-aware APS with schedule optimization and what-if scenarios | Yes: labor availability, skills, shifts and coverage | Integration review defines scope and timeline | SAP, Microsoft Dynamics, NetSuite, Oracle; supply-chain platforms | Not published |
| Asprova | Manufacturers wanting a mature, highly configurable finite scheduler | Finite-capacity scheduling with configurable logic, scenarios and drag-and-drop adjustment | Personnel as a resource constraint; workforce and qualification planning | Global partner network (over 30 partners) | Data links to ERP and production control systems | Not published |
| LillyWorks (PFM) | Make-to-order shops focused on on-time delivery | Risk-based prioritization and WIP pacing ("Protected Flow Manufacturing") | Not stated in materials reviewed | Cloud-based. Standalone or ERP add-on. | Standard connector for most manufacturing ERPs | Not published |
| Eyelit Technologies | Complex discrete plants (automotive, semiconductor, electronics, A&D) wanting APS and MES together | Attribute- and constraint-based APS with patented optimization; APS and MES on one data model | Yes: labor qualifications; operator skill matrices | Low-code/no-code configuration | Bi-directional with SAP, Oracle, Infor | Not published |
| MangoGem APS Optimizer | Plants with complex multi-resource constraints (setups, batching, multi-level BOMs) | Multi-resource, multi-objective finite-capacity optimizer | Yes: labor certifications, multi-skilled labor pools | On-premises or cloud. Implemented through reseller (VAR) partners. | SAP S/4HANA, Oracle, Microsoft Dynamics 365 | Not published |
| Just Plan It | Small job shops wanting cloud-based automatic scheduling with planner control | Automatic finite scheduling on a visual planning board, with drag-and-drop | Generates work plans for employees and machines; verify skill modeling | Cloud-only. Onboarding through a one-time launch program. | Excel import; API for SQL-based ERPs | Quote-based (launch fee plus subscription) |
| User Solutions EDGEBIC (successor to RMDB) | Shops wanting installed software with a one-time license | Finite-capacity scheduling with an optimizer and Theory of Constraints anchoring | Yes: operators, skills and certifications | Windows desktop application. Vendor says implementations are measured in days. | Excel, CSV and database import/export (e.g. JobBOSS, Epicor, SAP) | Yes: $25,000 (APS) or $35,000 (Complete), one-time |
| JobBOSS² (ERP reference) | Job shops that need the job-shop ERP itself | ERP scheduling: drag-and-drop Planning Board, Whiteboard Scheduler, finite or infinite | Assigns jobs to employees | It is the ERP | It is the ERP | Not listed on pages reviewed |
| Fulcrum (ERP reference) | Shops replacing a legacy ERP with a cloud ERP | ERP "Autoschedule" plus drag-and-drop inside a freeze window | Not stated in materials reviewed | It is the ERP | It is the ERP | Not listed on pages reviewed |
"Not stated" or "not published" means the vendor pages we reviewed didn't describe it. It doesn't mean the product lacks the capability. Verify critical requirements with each vendor.
The APS options, one by one
Skody AI: best for high-mix SMBs whose schedule breaks during the day
Skody is a production decision layer that runs on top of the ERP a shop already has. It reads orders, routings, materials and production state. It models machines, operators, skills, shifts, pallets, setups and outside processing, and resolves conflicts automatically: due dates first, then throughput. When conditions change, it recomputes the whole shop in under a minute and proposes the decision: which jobs move, on which machine, with which person.
Drag-and-drop ERP schedulers keep a planner as the man in the middle, and classic APS usually needs a model owner to tune it. Skody is built for shops that have neither the time nor the headcount for either.
- Integrations: ProShop, Acumatica, Fulcrum, JobBOSS² and SYSPRO. ProShop users: keep ProShop and add Skody.
- Deployment and security: ITAR-ready Gov Cloud and SOC 2 Type II.
- Implementation: most customers begin seeing value within weeks, not months.
- Pricing: from $1,500 per month (Shop plan, month-to-month). The Plant & Enterprise plan, for workforce and skills, pallets, lights-out, multi-site and advanced environments, has custom pricing.
CAI PlanetTogether: best for plants with a dedicated planner and broad integration needs
PlanetTogether builds production schedules around capacity, materials, labor, routings, changeovers, due dates and plant-specific constraints, with bottleneck management and what-if scenarios. It connects labor availability, skills, shifts and coverage to planning. It integrates with ERPs such as SAP, Microsoft Dynamics, NetSuite and Oracle, and with supply-chain platforms. CAI Software acquired PlanetTogether in June 2026 and continues to sell it as a standalone product, "CAI PlanetTogether." It serves process, discrete and multi-site manufacturers.
Asprova: best for manufacturers wanting a mature, highly configurable finite scheduler
Asprova schedules machines, tools and personnel with finite capacity. It offers preconfigured settings, fully customizable scheduling logic, multiple scheduling scenarios, drag-and-drop manual adjustment, and long-term capacity planning that covers workforce and qualifications. Asprova reports more than 3,300 sites worldwide and support across 44 countries, and describes itself as the market leader for production scheduling in Japan. It links to ERPs through data links with field mapping.
LillyWorks Protected Flow Manufacturing: best for make-to-order shops chasing on-time delivery
LillyWorks focuses on missed due dates in high-mix manufacturing. Its Protected Flow Manufacturing (PFM) platform prioritizes work by the actual risk of being late, paces material release into WIP, and plans against resource capacity and material availability. PFM is cloud-based. It runs standalone or integrated with an existing manufacturing ERP through a standard connector.
Eyelit Technologies: best for complex discrete plants wanting APS and MES on one platform
Eyelit APS is built for complex discrete manufacturing. It uses attribute- and constraint-based modeling of plant, material and labor constraints, including labor qualifications, with low-code/no-code configuration and patented optimization. It runs on the same data model as Eyelit MES, so shop-floor actuals update future schedules. It integrates bi-directionally with SAP, Oracle and Infor. Eyelit's own published evidence centers on automotive scheduling.
MangoGem APS Optimizer: best for plants with complex multi-resource constraints
MangoGem is a multi-resource, multi-objective finite-capacity scheduler. It handles sequence-dependent setups, batching, tank planning, multi-level BOMs, tooling, labor certifications and multi-skilled labor pools. It runs on-premises or in the cloud, integrates with SAP S/4HANA, Oracle and Microsoft Dynamics 365, and is implemented through value-added reseller partners. MangoGem says its technology is the scheduling backbone behind the o9 Digital Brain platform.
Just Plan It: best for small job shops wanting simple cloud-based automatic scheduling
Just Plan It is automatic finite scheduling software for job shops and multi-operation manufacturers. It uses a visual planning board where the planner reviews and adjusts the schedule by drag and drop. Shop-floor status updates the schedule. It's cloud-only, imports from Excel or connects to SQL-based ERPs through its API, and is priced as a one-time launch program plus a subscription.
User Solutions EDGEBIC (formerly RMDB): best for shops wanting an installed, one-time-license scheduler
EDGEBIC is the successor to Resource Manager DB (RMDB) and EDGEBI. It's a Windows desktop finite-capacity scheduler that supports sequence-dependent setup, lot streaming, and operators, skills and certifications as constraints, with an optimizer. It integrates with ERPs through Excel, CSV and database import/export. Published pricing is $25,000 for EDGEBIC APS and $35,000 for EDGEBIC Complete (adds MRP, inventory and purchasing), both one-time perpetual licenses. For a side-by-side with Skody, see Skody AI vs EDGEBIC.
JobBOSS² and Fulcrum: ERP scheduling for reference
JobBOSS² and Fulcrum are job-shop ERPs with scheduling included. JobBOSS² offers a drag-and-drop Planning Board, a Whiteboard Scheduler, and finite or infinite scheduling. Fulcrum offers an automatic scheduler plus drag-and-drop inside a near-term freeze window. They're the right first purchase when the shop needs the ERP itself. After a disruption, though, the planner still has to judge and re-sequence the plan. Skody runs on top of both, reading jobs and routings from them.
Running Fulcrum or JobBOSS² already? See Fulcrum scheduling and JobBOSS² scheduling.
Classic APS vs a production decision layer
- Classic APS optimizes a detailed model that a planner owns and tunes. Its strengths are depth, configurability and scenario planning. The cost is implementation effort and ongoing model ownership.
- ERP scheduling boards give visibility and drag-and-drop control, but the planner remains the man in the middle who repairs the plan after each disruption.
- A production decision layer (Skody's approach) recomputes a feasible finite plan across machines and people whenever conditions change, and proposes the decision for the planner to approve.
Neither approach is universally better. Choose depth if your problem is a complex model you want to own. Choose a decision layer if your problem is a schedule that stops matching the floor by mid-morning.
For head-to-head detail, see Skody vs APS.
When Skody is not the right fit
- Simple, repetitive production with little constraint interaction
- You're primarily shopping for a new ERP
- You need a broad enterprise MES/MOM replacement or multi-plant network planning, where suites such as Eyelit or enterprise APS fit better
- You want an installed, on-premise engine with a one-time license (EDGEBIC fits that model)
- Your routings and completions aren't reliable yet: fix the data first
Most small shops are well served by Excel or a whiteboard. Some small shops still have real complexity, such as pallets, fixtures and setups, shared operators, or outside processing, and benefit from finite scheduling.
Published Skody customer results
- Three Sigma Manufacturing (Kent, WA; aerospace and defense; ProShop ERP) reports the following as customer-reported results:
- 47 machine work centers scheduled
- planning horizon extended from one week to one year
- a 15% reduction in production delays
- scheduling time from days to seconds
- the planner accepting the computed baseline about 99% of days
- Zimmer Manufacturing (Leander, TX; CNC machining; ProShop ERP) uses Skody dashboards on shop-floor monitors, with an OTD dashboard updated every 15 minutes.
- Yeager Manufacturing (Winter Park, FL; ProShop ERP) publishes a case study on using live what-if scenarios in Skody to test labor, capacity and material changes before they become delivery problems. Read the Yeager Manufacturing case study.
Frequently asked questions
What is the best APS software for small and mid-size manufacturers?
It depends on the gap. For high-mix shops keeping their ERP, Skody AI recomputes a finite plan in under a minute, from $1,500 per month on the Shop plan, with people and skills on the Plant & Enterprise plan. CAI PlanetTogether and Asprova suit plants with a dedicated planner who wants deep, configurable APS. Just Plan It and User Solutions EDGEBIC are lighter options. Eyelit and MangoGem suit complex, multi-constraint plants.
What is the best scheduling software for high-mix job shops?
High-mix job shops need finite scheduling that handles shared machines, operator skills, sequence-dependent setups, material readiness and frequent disruptions. Skody AI is built for that case and runs on top of ERPs such as ProShop, Acumatica, Fulcrum, JobBOSS² and SYSPRO. If the shop needs the ERP itself, a job-shop ERP such as JobBOSS² or Fulcrum comes first.
How much does APS software cost?
Most APS vendors quote privately. Two publish prices: Skody AI starts at $1,500 per month, and User Solutions EDGEBIC is a one-time license of $25,000 (APS) or $35,000 (Complete). Just Plan It uses a one-time launch program plus a subscription. CAI PlanetTogether, Asprova, LillyWorks, Eyelit and MangoGem don't publish prices on the pages we reviewed.
Do I need APS if my ERP, such as JobBOSS² or Fulcrum, already schedules?
Not always. ERP scheduling boards give visibility and drag-and-drop control, but after a machine goes down or an operator is out, the planner still has to judge and re-sequence the plan. If that daily repair work is the bottleneck, a finite scheduler on top of the ERP helps. Skody runs on top of both JobBOSS² and Fulcrum.
Can APS software schedule operators and skills, not just machines?
Some can. Skody AI, CAI PlanetTogether, Eyelit, MangoGem and User Solutions EDGEBIC describe modeling labor skills, qualifications or certifications, and Asprova models personnel as a resource. Others model labor only as a shift calendar on a work center. In shops where people are the bottleneck, verify this on your own data.
How long does APS implementation take?
It varies widely. Classic APS projects often take months because the model has to be built and tuned. Skody says most customers begin seeing value within weeks, not months, and User Solutions says EDGEBIC implementations are measured in days. Ask each vendor who maintains the model after go-live.
Does APS software replace my ERP?
No. APS reads orders, routings, work centers and inventory from the ERP and returns a finite schedule. The ERP stays the system of record for orders, purchasing, inventory and costing. Skody, CAI PlanetTogether, Asprova, LillyWorks, Eyelit, MangoGem, Just Plan It and EDGEBIC can all run alongside an ERP.
Is Skody an APS system?
Skody does what APS does, finite-capacity scheduling against real constraints, but it's built as a production decision layer. It recomputes the whole shop in under a minute when conditions change and proposes the decision for the planner to approve, rather than relying on a planner to build and tune a model. It runs on top of the existing ERP.
When is Skody not the right fit?
When production is simple and repetitive with little constraint interaction; when you're mainly shopping for a new ERP; when you need a broad enterprise MES/MOM replacement or multi-plant network planning; when you want an installed, on-premise engine with a one-time license; or when routings and completions aren't reliable yet.
What is the difference between classic APS and a production decision layer?
Classic APS optimizes a detailed model that a planner owns and tunes. It's strong on depth, configurability and scenarios, at the cost of implementation effort and ongoing model ownership. A production decision layer, Skody's approach, recomputes a feasible finite plan across machines and people whenever conditions change and proposes the decision for the planner to approve. Choose depth if you want to own a complex model; choose a decision layer if the schedule stops matching the floor by mid-morning.
What should a small or mid-size manufacturer check when choosing APS software?
Whether it recomputes a feasible plan for the whole shop after a disruption; whether it schedules individual operators, skills and shifts, not just machine hours; how it handles setups, pallets, fixtures, outside processing and material readiness; whether it runs on top of your current ERP; how long it takes to get a usable schedule and who maintains the model; cloud vs installed and security needs such as SOC 2 or ITAR; and the pricing model.
Does Skody work with ProShop?
Yes. Skody integrates with ProShop, Acumatica, Fulcrum, JobBOSS² and SYSPRO, connects to any other ERP, typically in about 3 weeks after you sign, and runs on top of the ERP. ProShop users can keep ProShop and add Skody. See ProShop scheduling: keep ProShop, fix the schedule.
Sources and verification
Vendor statements come from each vendor's own public pages, checked 28 September 2026. Product capabilities change, so confirm critical requirements directly with each vendor. No vendor paid for inclusion, and there are no scores or reviews on this page.
- Skody AI: skody.ai, skody.ai/pricing, skody.ai/scheduler, skody.ai/case-studies/three-sigma-manufacturing, skody.ai/case-studies/zimmer-manufacturing
- CAI PlanetTogether: planettogether.com/products/advanced-planning-scheduling-software; caisoft.com/resources/cai-software-acquires-planettogether
- Asprova: asprova.com/en; asprova.eu/en/ms-aps
- LillyWorks: lillyworks.com; lillyworks.com/products/protected-flow-manufacturing
- Eyelit Technologies: eyelit.com/advanced-planning-and-scheduling; eyelit.com/manufacturing-operations-management-application-suite
- MangoGem: mangogem.com/en; mangogem.com/en/mangogem-aps/technology; mangogem.com/en/integrating_mangoGem-with-your-erp
- Just Plan It: just-plan-it.com
- User Solutions EDGEBIC: usersolutions.com/edgebic; usersolutions.com/pricing
- JobBOSS²: ecisolutions.com/products/jobboss2/features/scheduling
- Fulcrum: fulcrumpro.com/manufacturing-software/production-scheduling