# InstaStock vs Invoice Generator

The clearest difference is update cadence: InstaStock at daily against Invoice Generator's every 3 weeks. InstaStock also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. InstaStock sells 4 in-app purchases, starting at $14.99 per month and Invoice Generator sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

InstaStock ships an update daily, Invoice Generator every 3 weeks. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | InstaStock | Invoice Generator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 weeks |
| Size | 45 MB | 17 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mohammed Zaki Kadri](https://appshunter.io/developer/6775141133) | [Divv Saxena](https://appshunter.io/developer/1853206700) |

## What reviewers say

### InstaStock

[App page](https://appshunter.io/ios/app/instastock-inventory-manager/id6775223987)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $14.99 | per month |
| Advanced Monthly | $39.99 | per month |
| Pro Yearly | $140.99 | per year |
| Advanced Yearly | $399.99 | per year |


### Invoice Generator

[App page](https://appshunter.io/ios/app/invoice-generator-pdf-bills/id6777976567)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| InvoiceBill Pro Monthly | $4.99 | per month |
| InvoiceBill Pro Yearly | $39.99 | per year |
| InvoiceBill Pro Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is InstaStock free?

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

### Is Invoice Generator free?

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

### Do InstaStock or Invoice Generator have ads?

Neither InstaStock nor Invoice Generator shows ads.

### Which is updated more often, InstaStock or Invoice Generator?

InstaStock ships an update daily, and Invoice Generator every 3 weeks. Most recently, InstaStock was updated on October 15, 2026 and Invoice Generator on October 25, 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.*