InvoiceSherpa and ti3 are at different points on the same curve. InvoiceSherpa is a simple, well-priced automated invoice reminder tool with QuickBooks / Xero integration. ti3 is a structured 5-week recovery program that runs after reminders have already failed. If your invoices are mostly slipping by a few days and a friendly nudge fixes them, InvoiceSherpa. If you have invoices sitting at 30, 60, 90 days where reminders aren’t working, ti3.
Side-by-side comparison
| ti3 | InvoiceSherpa | |
|---|---|---|
| Starting price | $49/mo self-serve, $499/mo managed | $49/mo Sole Proprietor (up to 100 invoices), $99/mo Small Business |
| Recovery model | First-party 5-week structured sequence | Automated reminders + recurring billing + customer portal |
| Reminder channels | Email + SMS + formal letter (Final Demand) | Email + text/SMS |
| Recurring billing | Not a feature | Yes (a strength) |
| Customer portal | Not standalone | Yes (clients can view + pay) |
| Per-account analysis | Yes (free at /analysis/) | No |
| Final Demand Notice | Yes, built-in | Not a standard feature |
| Settlement / payment plans | Yes, built into sequence | Limited; manual |
| Data in (accounting / invoicing) | QuickBooks, Stripe, Excel, CSV | QuickBooks, Xero |
| Payment gateways supported | PayPal, Stripe, Nuvei, Authorize.net, FiServ, CashApp, Venmo, Zelle | Stripe, PayPal, ACH, credit cards |
| Free trial | No (card required) | Yes (14-day) |
| Best for | Closing stuck overdue accounts | Reducing routine late payments |
Sources: InvoiceSherpa pricing, G2 InvoiceSherpa reviews, Capterra InvoiceSherpa.
Where InvoiceSherpa wins
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Simple price tied to invoice volume. Sole Proprietor at $49/mo for up to 100 open invoices is clean and predictable. If you’re a small operation that mostly just needs reminders auto-sending, that’s a clear price point.
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Customer portal included. Clients log in, view invoices, pay directly. ti3 doesn’t have a standalone customer portal because the recovery sequence pushes the customer to pay through your existing invoicing tool. If “self-service customer payment portal” is important, InvoiceSherpa.
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Recurring billing support. Useful if you bill the same clients monthly on a fixed schedule. ti3 isn’t a recurring-billing tool.
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14-day free trial. Lower friction to start than ti3’s card-on-signup requirement. If you want to play with the tool before committing, easier here.
Where ti3 wins
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Reminders aren’t the same as recovery. This is the core difference. InvoiceSherpa sends reminders. ti3 runs an escalation sequence: forced-choice email, settlement offer, Final Demand Notice, escalation decision. Reminders work when the issue is forgetfulness. They don’t work when the customer has consciously decided to deprioritize. That’s where ti3 starts.
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Per-account analysis. Free at /analysis/. Tell ti3 about an overdue account, get back a probability of recovery + recommended action. InvoiceSherpa assumes you’ve already decided to chase every invoice.
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Final Demand Notice + escalation decision. Built into the sequence. Important because the Final Demand is what shakes loose 30-40% of stubborn invoices and creates the paper trail you need if escalation to small claims becomes necessary.
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Recovery happens in your business name with first-party legal positioning. Same as InvoiceSherpa on the “in your name” front, but ti3 is calibrated for actual recovery work (Final Demand language, US state law, escalation triggers) where InvoiceSherpa is calibrated for friendly reminders.
Buyer-specific verdict
If your overdue invoices are mostly 1-21 days late and a reminder fixes them: InvoiceSherpa. Cheaper at the bottom tier, simpler, gets the job done.
If you have invoices stuck past 30 days that reminders aren’t moving: ti3. The structured sequence is what closes those accounts.
If you need a customer portal as part of the workflow: InvoiceSherpa.
If you’re an MSP recovering retainer non-payment: ti3, with MSP positioning (details). InvoiceSherpa’s reminder-only model is too gentle for late MSP retainer recovery.
If you bill recurring subscriptions and want auto-billing + reminders combined: InvoiceSherpa.
Frequently asked questions
Can I use both tools?
Yes, and it’s a sensible pattern for some businesses. InvoiceSherpa handles ongoing reminders + recurring billing. ti3 handles structured recovery on accounts that didn’t respond to reminders. Different stages of the same curve.
Does ti3 send SMS reminders?
Yes. ti3’s recovery sequence includes email + SMS + a formal Final Demand letter. Both tools cover SMS; the difference isn’t channel-availability, it’s what each channel says (reminders vs structured escalation).
Which one’s cheaper for a small business?
At the entry tier, both are $49/mo. The decision shouldn’t be price; it should be problem-fit. Reminders for routine late payments → InvoiceSherpa. Structured recovery for stuck accounts → ti3.
Is ti3 worth the upgrade from InvoiceSherpa?
If you’re on InvoiceSherpa and have accounts past 30 days that aren’t moving, yes. Otherwise stay on what’s working. ti3 isn’t a “better InvoiceSherpa”; it’s a different stage of the recovery curve.
Where to go next
If you have stuck invoices past 30 days right now: run them through ti3’s free analysis. The output tells you which to put into a structured sequence and which to write off.
If you mostly just need reminders flowing and your overdue accounts rarely cross 30 days: InvoiceSherpa’s free trial is the right way to evaluate.
For the broader playbook, read the small business AR recovery complete guide.