# Sum List vs Flatwise

The clearest difference is price: Flatwise at Free against Sum List's $1.99. Flatwise also leads on update cadence (every 8 days vs every 3 months). Sum List's advantage is iOS requirement (15.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Flatwise is free to download; Sum List costs $1.99 up front. Sum List sells 1 one-off in-app purchase and Flatwise sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sum List ships an update every 3 months, Flatwise every 8 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sum List | Flatwise |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 8 days** |
| Size | 1 MB | 43 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Erdem Met](https://appshunter.io/developer/1632731422) | [Lukas Kamm](https://appshunter.io/developer/1772305262) |

## What reviewers say

### Sum List

[App page](https://appshunter.io/ios/app/sum-list/id1632731420)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iCloud Extension | $1.99 | one-time |


### Flatwise

[App page](https://appshunter.io/ios/app/flatwise/id6807201004)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flatwise Plus | $1.99 | one-time |


## Frequently asked questions

### Is Sum List free?

Sum List costs $1.99, and also offers in-app purchases.

### Is Flatwise free?

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

### Do Sum List or Flatwise have ads?

Neither Sum List nor Flatwise shows ads.

### Which is updated more often, Sum List or Flatwise?

Sum List ships an update every 3 months, and Flatwise every 8 days. Most recently, Sum List was updated on November 3, 2026 and Flatwise on October 31, 2026.

---

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