A smaller monthly fee can make a custom app look attractive. The better question is whether a focused replacement can cover the work you need at a sensible total cost, with someone responsible for keeping it running.
Compare equivalent outcomes over the same period. Include the build, migration, ongoing care, retained subscriptions, and your team’s effort.
1. Establish feature fit before comparing prices
Describe the tasks the replacement must support, including the less frequent ones. For a timesheet process, weekly entry may be straightforward; corrections, approval history, reporting permissions, and payroll exports can materially change the scope.
Write acceptance examples that a user can demonstrate. “A manager can approve a team’s submitted week, but cannot see another department’s restricted projects” is more useful than “supports approvals.” Check the same examples against native Jira features and existing app options.
If you need most of a mature app’s feature set, rebuilding it may be an expensive choice. A focused replacement is more plausible when the required subset is small, understood, and reasonably stable.
2. Put the whole cost in the comparison
For the existing option, include subscription commitments, administration effort, and any planned changes. For the custom option, include discovery, build, migration, hosting or platform usage, maintenance, support, and the cost of future feature changes.
Do not assume an app is free to operate because it uses Atlassian’s infrastructure. Forge has its own platform pricing and usage considerations; the relevant architecture and allowance belong in the estimate. Source: Atlassian’s Forge platform pricing documentation.
Ask what the care fee includes, what happens when usage grows, and which changes require a new quote. A fixed monthly fee is only comparable when its scope is defined.
3. Work through an illustrative scenario
The following figures are an example, not a current app price or a customer result. They assume one subscription can be cancelled immediately, costs stay constant, and the replacement covers all essential uses.
| Cost | Existing app | Custom app |
|---|---|---|
| One-time implementation | $0 | $6,000 |
| Monthly recurring cost | $1,700 | $200 |
| First-year total | $20,400 | $8,400 |
| Three-year total | $61,200 | $13,200 |
In this simplified case, the recurring difference is $1,500 a month. The $6,000 implementation cost is recovered after four months of avoided subscription payments. First-year savings are $12,000; the three-year difference is $48,000.
Those numbers change if migration costs extra, both apps run together, or part of the old subscription remains. If transition work adds $3,000 upfront, the same recurring difference would take six months to recover the combined $9,000. Use your actual proposal and cancellation terms, not the headline fee.
4. Decide who will own the ongoing responsibility
A custom app needs a clear operating arrangement. Agree who controls deployment, who can access the repository, which code is owned or licensed, and who responds when a platform change affects the workflow.
- Define support hours, response targets, and escalation contacts.
- Identify hosting and usage allowances, plus how additional costs are approved.
- Separate bug fixes from new functionality in the care agreement.
- Document handover options if your team or another provider takes over.
5. Choose the option that fits the uncertainty
A custom app is worth exploring when scope is bounded, the existing cost can actually be removed, migration is feasible, and there is an agreed maintenance owner. A commercial subscription may be the better fit when your needs are broad, changing quickly, or heavily dependent on the existing app’s ecosystem.
If key requirements are unclear, start with a review or prototype. Use it to test the difficult assumptions before committing to a replacement. You can try different cost scenarios in our calculator and bring the assumptions to a scoping conversation.
Have a workflow that might fit a focused app?
Let’s look at the features you need, the dependencies involved, and the costs that belong in your comparison.