# Todo Flow vs ShelfSense

The clearest difference is in-app purchases: Todo Flow at none against ShelfSense's 2. Todo Flow also leads on iOS requirement (16 vs 18.0). ShelfSense's advantage is update cadence (every 6 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. ShelfSense sells 2 in-app purchases, starting at $2.99 per month. Todo Flow asks for nothing beyond the download.

Todo Flow ships an update every 3 weeks, ShelfSense every 6 days. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Todo Flow | ShelfSense |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Size | 40 MB | 43 MB |
| Requires iOS | **16** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Chengdu Dance Elephant Technology Co., LTD.](https://appshunter.io/developer/1741861571) | [NoordWell B.V.](https://appshunter.io/developer/6781168789) |

## What reviewers say

### Todo Flow

[App page](https://appshunter.io/ios/app/todo-flow-task-reminder/id6670187897)

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

**In-app purchases:** none


### ShelfSense

[App page](https://appshunter.io/ios/app/shelfsense/id6794229047)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShelfSense Pro Monthly | $2.99 | per month |
| ShelfSense Pro Yearly | $29.99 | per year |


## Frequently asked questions

### Is Todo Flow free?

Todo Flow is free to download, with no in-app purchases.

### Is ShelfSense free?

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

### Do Todo Flow or ShelfSense have ads?

Neither Todo Flow nor ShelfSense shows ads.

### Which is updated more often, Todo Flow or ShelfSense?

Todo Flow ships an update every 3 weeks, and ShelfSense every 6 days. Most recently, Todo Flow was updated on October 15, 2026 and ShelfSense on October 9, 2026.

---

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