Comparison
An Invoice Simple alternative — the honest version
Invoice Simple is a good, mature product with a large user base. Most people looking for an alternative are not unhappy with the app; they are unhappy with what it costs to send four invoices a month. That is a specific problem, and it has a specific answer.
Short answer
Should I switch from Invoice Simple to Invoice Spark?
Switch if you are a sole trader on Android who bills from one phone and wants a smaller bill. Invoice Spark is $4.99 a month for unlimited watermark-free invoices, with a permanent free plan of 3 invoices a month below that. It needs no account and works fully offline.
Stay with Invoice Simple if you use an iPhone or a desktop browser, need multi-device access, or want clients to pay by card directly from the invoice. Those are real features Invoice Spark does not have.
Side by side
Details on the Invoice Simple side change over time — treat this as accurate as of the date at the bottom of this page and confirm current limits on their own site before deciding.
| Invoice Spark | Invoice Simple | |
|---|---|---|
| Free plan | 3 invoices a month, permanent | Limited free tier |
| Paid plan | $4.99/month | Check their current pricing |
| Invoices on the paid plan | Unlimited | Unlimited |
| Watermark on free exports | Yes | Check their free-tier terms |
| Account required | No, except for cloud backup | Yes |
| Works offline | Yes, entirely | Partly — it is a cloud product |
| Where data is stored | Your device; cloud backup on Pro is opt-in | Their servers |
| Ads | None | None |
| Platforms | Android | iOS, Android, web |
| Cloud sync across devices | No — backup only, not sync | Yes |
| Card payment links on the invoice | No | Yes |
| Receipt scanning / expense capture | No | Yes |
| Multiple users on shared records | No | Yes |
| Templates | 4, all on the free plan | Multiple |
| Estimates and quotations | Unlimited on both plans | Yes |
| VAT / GST / sales tax | Yes | Yes |
| Maturity and review base | New, few reviews yet | Large and established |
Where Invoice Simple is genuinely better
Writing a comparison where the competitor loses every row is how you get ignored. Invoice Simple beats Invoice Spark on several things that matter:
- Platform coverage. iOS, Android and a web app. Invoice Spark is Android only. If your phone is an iPhone, the comparison ends here.
- Multi-device access.Invoice Simple lets you pick up the same records on a second device or in a browser. Invoice Spark's cloud backup restores a phone; it does not let two devices work from the same book at once. And on the free plan there is no backup at all.
- Getting paid faster. Card and online payment links embedded in the invoice measurably shorten payment times. Invoice Spark has nothing equivalent — you put your bank details on the invoice and wait.
- Track record. Years in market, a very large review base and a support team. Invoice Spark is new with few reviews, and an honest comparison has to say so.
Where Invoice Spark wins
- A much smaller bill. $4.99 a month for unlimited invoices, with a free plan underneath that genuinely covers a quiet month rather than expiring after two weeks.
- No account. Install, open, invoice. No email, no password, no verification step between you and the first document.
- Actually offline. Not offline-tolerant with a sync queue — offline by architecture. Basements, rural sites, roaming with data off, prepaid data that ran out. See offline invoicing.
- Your client list stays on your phone by default. Nothing is uploaded unless you switch cloud backup on yourself, so there is no server-side copy to be breached or held hostage at renewal time.
- All four templates on the free plan.Layouts aren't used as an upsell.
The verdict
Choose Invoice Simple if you need cross-platform access, multi-device sync or in-invoice card payments — you are buying infrastructure, and their subscription pays for infrastructure that genuinely exists.
Choose Invoice Spark if you are one person with an Android phone who needs a professional PDF invoice for less money and without handing your client list to a server. It does less on purpose, and most of what it drops is what you were paying for.
Last updated:
FAQ
Switching questions
- What is the best cheap alternative to Invoice Simple?
- If your reason for leaving is the price, Invoice Spark is $4.99 a month for unlimited watermark-free invoices, with a permanent free plan of 3 invoices a month underneath it. It needs no account and works fully offline on Android. If you need iPhone support, a web app or card payment links, Invoice Simple remains the stronger product and you should stay with it.
- Is Invoice Simple free?
- Invoice Simple is free to download and offers a limited free tier, with a subscription required beyond it — check their site for the current limit and price, as both have changed over time. Invoice Spark is structurally the same: a free allowance of 3 invoices a month, then $4.99 a month. What differs is the price of the paid tier and the fact that Invoice Spark needs no account.
- Can I move my invoices from Invoice Simple to Invoice Spark?
- There is no automatic import — the two apps share no common account or format. In practice people export their existing invoices as PDFs from Invoice Simple, keep them as their historical record, and start fresh in Invoice Spark from the next invoice number. Re-entering your clients takes a few minutes and only happens once.
- Does Invoice Spark work on iPhone?
- No. Invoice Spark is Android only. Invoice Simple covers iOS, Android and web, so if you are on an iPhone or need a desktop browser, that is a genuine reason to choose it instead.
- Which one is better for a sole trader?
- For a one-person business billing from a single Android phone, Invoice Spark does the job for less and keeps your client list on your own device by default. For a business that needs several people invoicing against shared records, works across iPhone and desktop, or wants clients to pay by card from the invoice, Invoice Simple's cloud model is the right shape and worth the higher fee.
Try it against your next invoice.
Three a month free, $4.99 for unlimited. Offline, no account. See if you miss anything.
Free plan · No ads · No account needed · Works offline