# HappyMaintenance vs DDNotes

The clearest difference is update cadence: DDNotes at every 3 weeks against HappyMaintenance's every 3 months. DDNotes also leads on iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HappyMaintenance ships an update every 3 months, DDNotes every 3 weeks. The most recent releases landed on March 6, 2026 and December 23, 2025 respectively.

## The numbers

| Metric | HappyMaintenance | DDNotes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 16 MB | 8 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LAVA BRANDS DMCC](https://appshunter.io/developer/1469373321) | [Beijing SKYG Information Technology Co., Ltd.](https://appshunter.io/developer/1221868812) |

## What reviewers say

### HappyMaintenance

[App page](https://appshunter.io/ios/app/happymaintenance/id1497448516)

**Features:** macOS Compatibility

**In-app purchases:** none


### DDNotes

[App page](https://appshunter.io/ios/app/ddnotes/id1571619254)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HappyMaintenance free?

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

### Is DDNotes free?

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

### Do HappyMaintenance or DDNotes have ads?

Neither HappyMaintenance nor DDNotes shows ads.

### Which is updated more often, HappyMaintenance or DDNotes?

HappyMaintenance ships an update every 3 months, and DDNotes every 3 weeks. Most recently, HappyMaintenance was updated on March 6, 2026 and DDNotes on December 23, 2025.

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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.*