# SML Lens vs Invoice Maker

The clearest difference is in-app purchases: SML Lens at none against Invoice Maker's 2. SML Lens also leads on ads (none vs shown). Invoice Maker's advantage is update cadence (monthly vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Invoice Maker sells 2 in-app purchases, starting at $7.99 per 7 days. SML Lens asks for nothing beyond the download.

SML Lens ships an update every 2 months, Invoice Maker monthly. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SML Lens | Invoice Maker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/invoice-maker-invoflow/id6756097909/reviews)** |
| Number of ratings | — | **5** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 33 MB | 51 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SML MAHINDRA LIMITED](https://appshunter.io/developer/951572924) | [Pixoo LLC](https://appshunter.io/developer/1839405939) |

## What reviewers say

### SML Lens

[App page](https://appshunter.io/ios/app/sml-lens/id1658239204)

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

**In-app purchases:** none


### Invoice Maker

[App page](https://appshunter.io/ios/app/invoice-maker-invoflow/id6756097909)

Create and send professional invoices quickly and easily. Save client and service details for faster billing, track payments, and export polished PDF invoices. Ideal for freelancers and small businesses needing efficient invoicing.

**Highlights:** Fast invoice creation (under 30 seconds), Smart templates for clients and services, PDF export for sharing, Multi-currency support, Payment tracking dashboard, Offline access

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Invoice Maker - Weekly | $7.99 | per 7 days |
| Invoice Maker - Yearly | $39.99 | per year |


## Frequently asked questions

### Is SML Lens free?

SML Lens is free to download, with no in-app purchases.

### Is Invoice Maker free?

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

### Do SML Lens or Invoice Maker have ads?

Invoice Maker shows ads; SML Lens does not.

### Which is updated more often, SML Lens or Invoice Maker?

SML Lens ships an update every 2 months, and Invoice Maker monthly. Most recently, SML Lens was updated on October 1, 2026 and Invoice Maker on October 10, 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.*