Keep the tool that reliably completes the business job, gives you usable access to its data and has a supportable running cost. Do not choose by feature count or licence price alone. Test the awkward cases with the people who do the work, calculate the full cost of changing, and keep both only when each has a distinct, agreed purpose.
That sounds obvious until two products both claim to manage customers, tasks or documents. One may be the place people start work. The other may hold the records finance trusts. Cancelling the apparent duplicate before finding that distinction can turn a tidy subscription saving into a month of manual repair.
The timing is sensible for a review. Spendesk’s October 2026 software spend report describes overlap across categories in payments from 2,500 businesses using its platform. Cledara’s September spend index reports a median of 32 paid tools among its UK platform customers. These are different, selected customer samples. Neither number tells you how many tools your business needs or what cancelling one would save. They do show why a clear decision method is more useful than another general warning about subscriptions.
Are the tools doing the same job, or sharing a label?
Start with a real task. “Both are project management tools” is a category, not a test. “A customer requests a change after the quote is approved; the team must decide, schedule, deliver and invoice it” is a testable business job.
Follow that job through both products. Who creates the first record? Where is the current status visible? Which product sends the customer an update? Where do approvals live? What happens to the invoice or audit history? If one tool handles delivery and another holds a customer-facing plan, they may overlap on a product comparison page while doing different work in practice.
Ask the people who use each tool to show you a normal case and an awkward one. A demo with a clean new record often hides the real dependency: a changed order, a returned item, a customer with two trading names, or a colleague covering for someone on leave. Write down what happened, including spreadsheets and email. This is not an exercise in collecting complaints. It is how you find the rules a replacement must meet.
Give each important record a home. If customer contact details can change in both products, decide which one owns the value and how the other receives it. The same question applies to order status, stock quantity, job completion and invoice payment. Our guide to CRM and accounts disagreements shows how a seemingly simple handoff can go wrong when ownership is vague.
What should you put on the comparison sheet?
Use one sheet for the pair of tools. Keep evidence and guesses in separate columns. A useful first pass looks like this:
| Decision point | Evidence to collect |
|---|---|
| Business job | Three to five actual tasks the tools support, with an owner for each |
| Use | Named teams, active users and the functions they used in the last billing period |
| Exceptions | How each tool handles corrections, cancellations, approvals and failed handoffs |
| Data | Records, attachments, history and identifiers you can export and read elsewhere |
| Connections | Every integration, scheduled job, report and manual copy step that depends on it |
| Contract | Next renewal, notice period, licence terms and any minimum commitment |
| Operation | Who administers it, fixes failures, trains new users and handles access changes |
Do not turn this into a points game too early. A product that wins six rows but cannot produce a legally or operationally important record may be the wrong one to keep. Mark any non-negotiable business or regulatory requirement as a gate. Confirm it with the relevant owner rather than assuming a feature name proves compliance.
If a supplier says it supports an export, try one. Open representative records outside the product and check the links between customers, transactions and attachments. The UK government’s guidance on technical lock-in recognises that dependencies cannot all be removed. The practical question is whether you understand the exit path and its cost. A CSV button on its own does not answer that.
How do you compare the real running costs?
Use the next 12 months first, then a longer period if the choice involves substantial migration or a build. For each option, add:
- Contracted subscription charges, including seats, add-ons and any usage-priced elements.
- Connector or automation-platform charges needed to make the workflow work.
- Internal time spent administering accounts, correcting records and reconciling systems.
- Support, hosting, monitoring and security work if you own custom software or an integration.
- One-off migration, configuration, training and parallel-running costs.
Use your invoices and your team’s measured time. Where a value is unknown, mark it as unknown and say who will find it. Do not borrow a benchmark as if it were your forecast.
Here is the calculation I would put beside a renewal decision:
First-year net effect of retiring tool B = B’s charges that can actually be stopped, minus migration and parallel-running costs, minus added charges and support for the kept tool, minus the cost of extra manual work.
Run it again for later years without the one-off work, but include expected maintenance and the contract terms you know. A negative first year is not necessarily a bad decision if the workflow improves and later costs fall. A positive number is not enough if the change makes an essential process fragile. Record those service effects alongside the pounds.
Spendesk models substantial savings from duplicate subscriptions in its customer data, but its estimates are not a promise to your firm. Two apparently similar subscriptions can also be deliberate. One might serve confidential work in a separate environment, or a specialist function the general tool handles badly. Require a named reason and cost owner for that overlap; do not declare it waste by category alone.
Can the kept tool pass the awkward cases?
Before cancelling anything, make a short acceptance test with the people responsible for the process. Use safe test data where possible. The exact cases will differ, but the test should include a normal transaction, a correction, a rejected or failed handoff, and the person who has to pick up the exception.
For a team considering two job-management products, that might mean checking that a job can be created, rescheduled, completed, corrected and reflected in the invoice or customer record. If one product relies on an integration to do that, test the integration as part of the option. “The record appeared” is weaker evidence than “the correct person could complete the job and finance could reconcile it”.
Write an expected result for each case and record what actually happened. If the answer depends on a colleague quietly editing a spreadsheet, include that work in the option. If a supplier says a feature is coming soon, keep it outside the pass column until it exists in the version you can buy and use.
You can keep both products temporarily while you test. Define when the trial ends, which records move during it and who can say the proposed replacement failed. Parallel running without an end date becomes another permanent subscription. A trial with no fallback is just an early cutover.
When is a small bespoke component worth considering?
Sometimes neither product can express a distinctive approval, pricing or exception rule without a lot of workarounds. That can justify a small custom component between otherwise sound products, or a focused replacement for one narrow job. It does not automatically justify rebuilding a CRM, accounting package or complete workflow platform.
I would ask for a bounded proposal: the one business task to improve, the data it needs, the systems it must connect to, the acceptance cases, and the person who will operate it after release. Price the build and the ongoing support. Include updates when an API changes, hosting, access control, backups and the ability for another competent maintainer to take over.
A standard product may remain the best choice when the process is common, its support is good and it can pass the tests with modest configuration. A bespoke component earns its cost when a genuinely important rule cannot be handled well by the available tools and the business is willing to maintain what it owns. Our system integration service starts by mapping those boundaries before recommending code.
What is the safe order for retiring a tool?
Do not cancel the subscription when the replacement first looks promising. Use a clear sequence:
- Name the owner and decision date. One person can decide whether the test has passed, with finance, operations and technical input where needed.
- Check the contract. Record notice dates and what access remains after cancellation. Do this early enough to make a real choice.
- Map and export the data. Include attachments, history, relationships and any records kept for a required period. Confirm what the new home can represent.
- Move a bounded set. Test the ordinary and awkward cases, reconcile counts and inspect individual records. Keep a log of gaps rather than hiding them in a bulk total.
- Switch the workflow. Tell users which tool is now authoritative. Redirect forms, reports, integrations and scheduled jobs. Decide how old links and read-only records will be handled.
- Watch the result. For an agreed period, check failed handoffs, missing records, manual corrections and whether the team can finish the job. Keep a fallback with an owner.
- Cancel only after sign-off. Confirm the data is available, the replacement works, the contract can be ended and the cancellation has actually stopped the charge.
Our five-year software cost comparison gives a wider frame for licence, build and running costs. The decision here is smaller: prove that one apparent duplicate can leave without breaking a job the business relies on.
What if the answer is to keep both?
That is a legitimate answer. Record the distinct job each product serves, which data it owns, what crosses between them, and the date you will review the arrangement. If two products remain because migration costs outweigh the achievable saving, put that estimate and its assumptions in the decision record. If they remain because one has an essential specialist feature, name it and test it again at renewal.
The point is to make the overlap deliberate. A clear keep-both decision can be cheaper and safer than a rushed consolidation. It also gives you a better starting point if the products or your business change later.
Recommended reading
- When Your CRM and Accounts Disagree explains why data ownership matters when two tools share a business process.
- Custom Software vs SaaS: The True 5-Year Cost Comparison helps frame the ongoing cost of the choice.
If two subscriptions appear to overlap, bring the actual workflow and next renewal date to a conversation with Ajairu. I can help turn them into a keep, change or retire decision you can test.