# IOUly vs FlashBill

The clearest difference is update cadence: FlashBill at every 3 days against IOUly's every 10 days. IOUly's advantage is iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. IOUly sells 4 in-app purchases, starting at $4.99 per month and FlashBill sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

IOUly ships an update every 10 days, FlashBill every 3 days. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | IOUly | FlashBill |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 3 days** |
| Size | 53 MB | 89 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Serdar OZKAN](https://appshunter.io/developer/1539288181) | [Jesus Alberto Duerto Prado](https://appshunter.io/developer/1892580376) |

## What reviewers say

### IOUly

[App page](https://appshunter.io/ios/app/iouly-iou-tracker/id6760676140)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Whos Pro: Monthly | $4.99 | per month |
| Whos Pro: Yearly | $29.99 | per year |
| Lifetime · One-Time Offer | $39.99 | one-time |
| Whos Pro: Lifetime | $69.99 | one-time |


### FlashBill

[App page](https://appshunter.io/ios/app/flashbill-expense-tracker/id6762032588)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Individual Monthly | $1.99 | per month |
| Individual Annual | $19.99 | per year |


## Frequently asked questions

### Is IOUly free?

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

### Is FlashBill free?

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

### Do IOUly or FlashBill have ads?

Neither IOUly nor FlashBill shows ads.

### Which is updated more often, IOUly or FlashBill?

IOUly ships an update every 10 days, and FlashBill every 3 days. Most recently, IOUly was updated on October 22, 2026 and FlashBill on October 24, 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.*