# Simple Task Manager vs IOU Slip

The clearest difference is in-app purchases: IOU Slip at none against Simple Task Manager's 3. IOU Slip also leads on update cadence (every 4 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Simple Task Manager sells 3 in-app purchases, starting at $3.99 per month. IOU Slip asks for nothing beyond the download.

Simple Task Manager ships an update every 3 weeks, IOU Slip every 4 days. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Simple Task Manager | IOU Slip |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/iou-slip-promise-tracker/id6758438592/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | — | Free |
| Size | 1 MB | 4 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [KAZUHO MOROFUJI](https://appshunter.io/developer/1862359039) | [GROUPOO PTE. LTD.](https://appshunter.io/developer/1747245669) |

## What reviewers say

### Simple Task Manager

[App page](https://appshunter.io/ios/app/simple-task-manager-one-task/id6756692582)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Task AI Monthly | $3.99 | per month |
| OneTask AI Yearly | $24.99 | per year |
| One Task Plus | $1.99 | one-time |


### IOU Slip

[App page](https://appshunter.io/ios/app/iou-slip-promise-tracker/id6758438592)

This app helps you record personal promises and favors, focusing on relationships and trust rather than monetary debt. It serves as a digital reminder of bonds between people, like offering a massage or a future coffee. It's designed to cherish connections and the spirit of giving.

**Highlights:** Record personal promises, Track favors and bonds, Digital note of promises, Focus on relationships, Reminder of trust

**In-app purchases:** none


## Frequently asked questions

### Is Simple Task Manager free?

Simple Task Manager is free to download, with in-app purchases available.

### Is IOU Slip free?

IOU Slip is free to download, with no in-app purchases.

### Do Simple Task Manager or IOU Slip have ads?

Neither Simple Task Manager nor IOU Slip shows ads.

### Which is updated more often, Simple Task Manager or IOU Slip?

Simple Task Manager ships an update every 3 weeks, and IOU Slip every 4 days. Most recently, Simple Task Manager was updated on October 15, 2026 and IOU Slip on October 11, 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.*