Your jobs in Memento.
Your books in QuickBooks.
Always in sync.

Memento Database is a flexible mobile database app for Android and iOS. It's widely used by field teams — repair technicians, sales reps, inspectors — to capture job information on their phone or tablet. MQSync bridges that field data into QuickBooks automatically.

Yes. MQSync connects to QuickBooks Online via the Intuit QuickBooks Online API. You need an active QuickBooks Online subscription. QuickBooks Desktop is not supported.

No. MQSync is built for QuickBooks Online US only. Canadian, UK, Australian, and other regional editions are not supported. Regional versions of QuickBooks Online differ in their data models — tax fields, account structures, and localized entities — and supporting them properly would require a separate implementation. If your QuickBooks company is outside the US, MQSync will not work for you.

Invoices always originate in Memento — this is by design. Pulling historical QuickBooks invoices into Memento would create noise for field teams who only care about active jobs. Customers, products, and accounts can be seeded from QuickBooks into Memento when you set up a project.

Yes. Edit the job entry in Memento and trigger a sync action — MQSync will update the existing QuickBooks invoice in place using a sparse update (the QuickBooks API's operation=update&sparse=true), so only the changed fields are written, QuickBooks-managed data is preserved and no duplicate invoice is created. The revised PDF is fetched from QuickBooks and written back to the Memento entry automatically, replacing the previous one. If the invoice was already sent to the customer, the updated invoice can be re-sent via the separate Invoice — Send task.

MQSync detects the conflict and flags it for review in your dashboard instead of silently overwriting one side. You see both versions and choose which to keep, so neither version is lost. On Pro custom maps, you choose the sync direction per entity — one-way or bidirectional. For bidirectional entities, per-field direction rules define which system is authoritative for each field, preventing conflicts automatically without manual review.

Nothing is lost — MQSync simply keeps going. One sync run moves up to the number of changed records your plan allows (100 on Free, 200 on Starter, 500 on Business, 1,000 on Pro). Records that haven't changed cost nothing, so an ordinary working day never comes close to the limit.

When there is more — the first sync after setup, or a bulk edit in Memento — the run reports how much is left and starts the next piece by itself a minute or two later, up to five more times in a row. Anything still outstanding goes out on the task's next scheduled run, or the next time you press Run Now on a manual task.

Each record that reaches QuickBooks is marked as the run goes along, so the next piece picks up exactly where the last one stopped: no work is repeated, no duplicates are created, and a run that is interrupted keeps everything it has already written.

All API keys and OAuth tokens are encrypted at rest. QuickBooks is connected via the Intuit OAuth 2.0 flow — MQSync never sees your QuickBooks password. Connections are over HTTPS and data is not stored beyond what's needed for sync operations.

Yes. No contracts, no lock-in. Cancel from your account settings and your subscription ends at the current billing period. Your data remains accessible until the period closes.

Memento offers a self-hosted server option in addition to their cloud service. The cloud API is rate-limited to 10 requests per minute. If you have large data volumes or need faster sync, a Private Server removes that limit entirely. It is optional — MQSync works with the standard Memento cloud on all plans.

On the Pro plan, each sync task gets a unique webhook URL. You add a short script to any Memento script — an on-create or on-update trigger, or a manual action script a user runs. When the script executes, MQSync queues a sync run as soon as the request arrives, instead of waiting for the next scheduled poll.

Because Memento needs a few seconds to push the saved entry to its cloud server, the script includes a configurable delay (default 5 seconds). The URL and a ready-to-paste script are generated automatically on the task detail page — no manual configuration needed.

Every plan includes a monthly allowance of sync credits. A credit is used each time MQSync reads data out of QuickBooks — scanning your customers, items, and accounts for changes, or fetching an invoice PDF to write back to Memento. Writing to QuickBooks — creating and updating customers, items, and invoices, and sending invoices to customers — never uses a credit.

This mirrors how Intuit meters its own API: data-out calls are metered (Intuit classifies them as CorePlus), while writes are free. Your live usage, forecast, and monthly reset date are shown on your billing page. Typical field-team workloads stay comfortably within the plan allowance.

Monthly sync credits by plan:

• Starter5,000
• Business25,000
• Pro100,000
• Freesandbox only — not metered

Allowances may be adjusted; the live figure for your plan is always shown on your billing page.

If you reach your monthly allowance, syncs pause for the rest of the billing period and resume automatically when the allowance resets — no data is lost and nothing you configured is changed. We email you as you approach the limit and again when it's reached. To keep syncing before the reset, you can buy one-time top-up credit packs — they roll over between periods — or upgrade to a plan with a larger monthly allowance.

We accept all major credit and debit cards, processed securely by Paddle — MQSync never sees or stores your card details.

The charge will show as PADDLE.COM* MQSYNC on your bank or card statement. Paddle acts as the merchant of record for all MQSync subscriptions.

Yes. Paddle issues a payment receipt automatically after every charge. Receipts are available to download from your account's billing page at any time. MQSync is a US-only service — no VAT is applied. Paddle handles any applicable US state sales tax automatically; if sales tax applies in your state, it will be shown at checkout.

We offer a 30-day money-back guarantee on your first payment if MQSync doesn't work for your setup — just contact us within 30 days of your first charge. Subsequent billing periods are non-refundable. See our refund policy for full details.