# Smart Flow vs Invoice Maker・Receipt・Estimate

The clearest difference is in-app purchases: Smart Flow at none against Invoice Maker・Receipt・Estimate's 9. Smart Flow also leads on device support (3 vs 1) and iOS requirement (11.0 vs 17.2). Invoice Maker・Receipt・Estimate's advantage is update cadence (every 6 weeks vs every 9 months). On price and ads there is nothing between them.

Both are free to download. Invoice Maker・Receipt・Estimate sells 9 in-app purchases, starting at $4.99 per 7 days. Smart Flow asks for nothing beyond the download.

Smart Flow ships an update every 9 months, Invoice Maker・Receipt・Estimate every 6 weeks. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Smart Flow | Invoice Maker・Receipt・Estimate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (31 ratings)](https://appshunter.io/ios/app/invoice-makerreceiptestimate/id6478528236/reviews)** |
| Number of ratings | — | **31** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 61 MB |
| Requires iOS | **11.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tlantic SI](https://appshunter.io/developer/981449612) | [Zozed Company](https://appshunter.io/developer/1639529139) |

## What reviewers say

### Smart Flow

[App page](https://appshunter.io/ios/app/smart-flow/id6469048865)

**Features:** macOS Compatibility

**In-app purchases:** none


### Invoice Maker・Receipt・Estimate

[App page](https://appshunter.io/ios/app/invoice-makerreceiptestimate/id6478528236)

Easily create, organize, and track financial transactions. Generate professional invoices and receipts, manage your accounts, and use electronic signatures for secure and authentic transactions. Download payment receipts and invoices in PDF format.

**Highlights:** Generate invoices, Organize accounts, Download PDF receipts, Manage invoice archive, Electronic signatures, User-friendly interface

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Invoice Maker Week | $4.99 | per 7 days |
| Invoice Maker Week | $4.99 | per 7 days |
| Invoice Maker Week Premium | $4.99 | per 7 days |
| Upgrade your financial toolkit | $5.99 | per 7 days |
| Elevate your financial game | $5.99 | per 7 days |
| premium | $7.99 | per 7 days |
| Invoice Maker Week Promo | $7.99 | per 7 days |
| Make invoicing a pleasure | $19.99 | per month |
| Invoice Premium Year | $49.99 | per year |


## Frequently asked questions

### Is Smart Flow free?

Smart Flow is free to download, with no in-app purchases.

### Is Invoice Maker・Receipt・Estimate free?

Invoice Maker・Receipt・Estimate is free to download, with in-app purchases available.

### Do Smart Flow or Invoice Maker・Receipt・Estimate have ads?

Neither Smart Flow nor Invoice Maker・Receipt・Estimate shows ads.

### Which is updated more often, Smart Flow or Invoice Maker・Receipt・Estimate?

Smart Flow ships an update every 9 months, and Invoice Maker・Receipt・Estimate every 6 weeks. Most recently, Smart Flow was updated on October 2, 2026 and Invoice Maker・Receipt・Estimate on October 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*