# SparkFlow by Ignite vs Invoice Them

The clearest difference is in-app purchases: SparkFlow by Ignite at none against Invoice Them's 2. Invoice Them's advantage is update cadence (every 3 days vs every 9 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Invoice Them sells 2 in-app purchases, starting at $9.99 per month. SparkFlow by Ignite asks for nothing beyond the download.

SparkFlow by Ignite ships an update every 9 days, Invoice Them every 3 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | SparkFlow by Ignite | Invoice Them |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Size | 74 MB | 54 MB |
| Requires iOS | 16.6 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ignite Software and Design](https://appshunter.io/developer/1514664768) | [NEWMUX](https://appshunter.io/developer/1812839354) |

## What reviewers say

### SparkFlow by Ignite

[App page](https://appshunter.io/ios/app/sparkflow-by-ignite/id6763913737)

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

**In-app purchases:** none


### Invoice Them

[App page](https://appshunter.io/ios/app/invoice-them-invoice-maker/id6815091959)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Invoice Them Pro Monthly | $9.99 | per month |
| Invoice Them Pro Yearly | $79.99 | per year |


## Frequently asked questions

### Is SparkFlow by Ignite free?

SparkFlow by Ignite is free to download, with no in-app purchases.

### Is Invoice Them free?

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

### Do SparkFlow by Ignite or Invoice Them have ads?

Neither SparkFlow by Ignite nor Invoice Them shows ads.

### Which is updated more often, SparkFlow by Ignite or Invoice Them?

SparkFlow by Ignite ships an update every 9 days, and Invoice Them every 3 days. Most recently, SparkFlow by Ignite was updated on October 31, 2026 and Invoice Them on October 31, 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.*