# OnceOne vs Loopless GTD

The clearest difference is in-app purchases: Loopless GTD at none against OnceOne's 3. Loopless GTD also leads on update cadence (every 3 days vs weekly) and iOS requirement (13.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. OnceOne sells 3 in-app purchases, starting at $0.99 per month. Loopless GTD asks for nothing beyond the download.

OnceOne ships an update weekly, Loopless GTD every 3 days. Both last shipped on September 5, 2026.

## The numbers

| Metric | OnceOne | Loopless GTD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Size | 3 MB | 176 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dongliang Yin](https://appshunter.io/developer/1030365061) | [Shubhi Jain](https://appshunter.io/developer/1820235478) |

## What reviewers say

### OnceOne

[App page](https://appshunter.io/ios/app/onceone-grouping-to-do-tasks/id6744550176)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro(Monthly) | $0.99 | per month |
| Pro(Annual) | $9.99 | per year |
| Pro(Lifetime) | $24.99 | one-time |


### Loopless GTD

[App page](https://appshunter.io/ios/app/loopless-gtd/id6754224791)

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

**In-app purchases:** none


## Frequently asked questions

### Is OnceOne free?

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

### Is Loopless GTD free?

Loopless GTD is free to download, with no in-app purchases.

### Do OnceOne or Loopless GTD have ads?

Neither OnceOne nor Loopless GTD shows ads.

### Which is updated more often, OnceOne or Loopless GTD?

OnceOne ships an update weekly, and Loopless GTD every 3 days. Most recently, OnceOne was updated on September 5, 2026 and Loopless GTD on September 5, 2026.

---

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