Invoice Koi vs Invoice Fly
Two subscriptions. Compare what each one buys.
Invoice Fly starts at $8.25 a month, with no free plan. Invoice Koi is about US$8.33 a month, billed yearly, with every feature on one plan.
Last checked 7 September 2026. US list prices.
On Google Play now. Coming soon to iPhone. Have the app? Open it
Invoice Fly or Invoice Koi?
Two paid trades apps, close on features and price. Invoice Fly adds tips and a browser version; Invoice Koi adds a link your client opens and works with no signal.
Choose Invoice Fly if
- You need it in a browser as well as on the phone.
- You take tips, which suits a trade where people round up.
Choose Invoice Koi if
- You want to set up your business and draft a real invoice before you subscribe.
- You want clients to open the invoice from a link on their own phone.
- You want your books on the phone and working with no signal, in a loft or a basement.
What Invoice Fly is good at
Invoice Fly is the closest app on this list to Invoice Koi. It is a proper trades invoicing app, it looks right, it takes card payments, and it handles tips.
The catch
There is no free plan and no published feature list, so what the subscription holds is something you find out after paying.
The ten rows that decide it
| Feature | Invoice Koi | Invoice Fly |
|---|---|---|
| Best for | One person invoicing from a phone, between jobs | Trades who take tips or want a browser version |
| What it costs | Subscription, with a free trial where your store offers one | $8.25 a month |
| Invoices | No cap | Cap not stated |
| Estimates or quotes | No cap | Cap not stated |
| Clients | No cap | Cap not stated |
| Invoices free of vendor branding | Included | Included |
| Accept card payments | Included | Included |
| Receipt scanning | Included | Included |
| Jobs and job organization | Included | Included |
| Users on the account | 1 user, crew plans add seats | Number not stated |
| Web access | Not offered | Included |
| Sync and backup across devices | Included | Included |
All 59 features, and the tier each one sits in
A paid tier includes its own free tier, so a mark means available at that price or below. Of the 59, 1 are better here, 2 better in Invoice Fly, 36 tied, and 20 neither, or not stated.
| Feature | Invoice Koisubscription | Invoice Fly$8.25 a month | Who has it |
|---|---|---|---|
| Documents | |||
| Invoices | ○ | ○ | Tied |
| Estimates or quotes | ○ | ○ | Tied |
| Clients | ○ | ○ | Tied |
| Turn an estimate into an invoice | ○ | ○ | Tied |
| Recurring invoices | ○ | ○ | Tied |
| Credit notes | ○ | · | Not stated |
| Work orders | – | · | Not stated |
| Change orders | – | · | Not stated |
| Client contracts | – | · | Not stated |
| Document or project templates | ○ | ○ | Tied |
| Price book of saved items | ○ | ○ | Tied |
| How the document looks | |||
| Your logo on the document | ○ | ○ | Tied |
| Your brand or accent color | ○ | ○ | Tied |
| Choice of templates | ○ | ○ | Tied |
| Invoices free of vendor branding | ○ | ○ | Tied |
| Rename the field labels | ○ | ○ | Tied |
| Photos and attachments | ○ | · | Not stated |
| Terms and conditions block | ○ | ○ | Tied |
| License and insurance details | – | · | Not stated |
| Your own signature | ○ | ○ | Tied |
| Client e-signature | ○ | ○ | Tied |
| Getting paid | |||
| Accept card payments | ○ | ○ | Tied |
| Bank transfer or ACH | – | · | Not stated |
| Tap to Pay in person | – | · | Not stated |
| Deposits or milestone payments | ○ | ○ | Tied |
| Record partial payments | ○ | ○ | Tied |
| Pass processing fees to the client | – | · | Not stated |
| Tips | – | ○ | Them |
| Automatic payment reminders | ○ | ○ | Tied |
| Overdue alerts to you | ○ | ○ | Tied |
| Know the invoice was opened | – | · | Not stated |
| A link the client opens | ○ | – | Invoice Koi |
| Client statements | ○ | ○ | Tied |
| Homeowner financing | – | · | Not stated |
| Lending or capital for you | – | · | Not stated |
| Running the business | |||
| Expense tracking | ○ | ○ | Tied |
| Receipt scanning | ○ | ○ | Tied |
| Time tracking | ○ | ○ | Tied |
| Jobs and job organization | ○ | ○ | Tied |
| Schedule visits or a calendar | ○ | ○ | Tied |
| Routing or GPS | – | – | Neither |
| Reports | ○ | ○ | Tied |
| Export CSV, spreadsheet or PDF | ○ | ○ | Tied |
| Accounting sync | – | – | Neither |
| Bank feed import | – | – | Neither |
| Barcode scanner | – | · | Not stated |
| Leads or a CRM | – | – | Neither |
| Track client activity | ○ | ○ | Tied |
| Request client reviews | – | · | Not stated |
| A marketing site for you | – | – | Neither |
| An AI assistant | ○ | ○ | Tied |
| Voice note into an invoice | ○ | ○ | Tied |
| Read a document and answer on it | ○ | ○ | Tied |
| Account and scale | |||
| Mobile app | ○ | ○ | Tied |
| Web access | – | ○ | Them |
| Sync and backup across devices | ○ | ○ | Tied |
| Users on the account | 1 user, crew plans add seats | ○ | Tied |
| More than one business | ○ | ○ | Tied |
| Priority support | one to two days | · | Not stated |
- ● In the free tier
- ○ In the cheapest paid plan
- ▲ Only on a higher plan
- – Not offered
- · Not stated on their page
- 3 a month Included, but capped or charged at this rate
What is free, and what the subscription buys
Setting up your business and writing drafts is free. Issuing an invoice, estimate or receipt needs a subscription. Eligible new iOS subscribers: two weeks free on annual, one week on weekly. Nothing starts until you confirm the purchase. Without a trial, the displayed price applies immediately.
- Install the app and set up your business
- Add your clients and your price book
- Write drafts of invoices and estimates
- Send unlimited invoices, estimates and receipts
- Cloud storage for every photograph, on any phone
- Unlimited AI scanning of receipts and documents
- AI voice notes into invoices, no daily limit
- Priority support, in one to two working days
US App Store solo prices. Prices and offers vary by country and store. Your local price appears in the app before purchase. Renews automatically until cancelled in your store account settings. Your records stay yours. After expiry, view, export or resend issued records and record or collect outstanding payments. New documents need a subscription or eligible trial, except where existing access is preserved. Existing customers keep their promised core document access.
Switching from Invoice Fly
If Invoice Fly can export your clients or items as a spreadsheet (CSV), Invoice Koi reads the file, matches the columns by their headings and only ever adds: nothing already on your phone is removed. You can do it before you subscribe.
Common questions
Is Invoice Koi cheaper than Invoice Fly?
Both charge to send. As checked on 7 September 2026, Invoice Fly's cheapest way in is $8.25 a month. Invoice Koi is free to set up and draft in, and sending is an annual solo plan at US$99.99 billed yearly (about US$8.33 a month), or a weekly solo plan at US$9.99 billed weekly (US App Store prices). The app shows your local price from the store, with any free trial you are eligible for, before you buy.
What does Invoice Fly do that Invoice Koi does not?
Two things: “Tips” and “Web access”. If one of those is what you need, Invoice Fly is the better pick.
Does Invoice Koi take card payments?
Yes. After Stripe setup, Koi can collect card payments online through a payment link. Koi charges 0.35% with a subscription, or 0.7% + $0.10 without one, plus Stripe processing fees. Payments recorded manually have no Koi fee.
Draft first, subscribe to send
Draft free. Subscribe to send unlimited invoices with your own logo and no watermark.
On Google Play now. Coming soon to iPhone. Have the app? Open it
iPhone and iPad, iOS 16.4 or later.
Where these numbers come from
Every Invoice Fly cell was read from their own pricing page on 7 September 2026, at US list prices in US dollars. Invoice Fly publishes no free plan and no feature grid, so its column comes from a first-hand teardown of the app rather than from a pricing page. Unlisted features and rates are marked as not stated. Platform fees are separate from processor fees. Report a correction.
Product names and logos belong to their owners. This comparison is not endorsed by or affiliated with Invoice Fly.