# Days Matter Air vs KeepProof

The clearest difference is update cadence: KeepProof at every 3 weeks against Days Matter Air's every 2 months. Days Matter Air's advantage is iOS requirement (12.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Days Matter Air sells 4 one-off in-app purchases and KeepProof sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Days Matter Air ships an update every 2 months, KeepProof every 3 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Days Matter Air | KeepProof |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (338 ratings)](https://appshunter.io/ios/app/days-matter-air-countdown/id1113365292/reviews)** | — |
| Number of ratings | **338** | — |
| Positive reviews | 84.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 161 MB | 5 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [iDaily Corp.](https://appshunter.io/developer/364264742) | [YangJiYun](https://appshunter.io/developer/421617952) |

## What reviewers say

### Days Matter Air

[App page](https://appshunter.io/ios/app/days-matter-air-countdown/id1113365292)

Track important upcoming and past events with a visual countdown. Supports a vast date range, custom categories, and widgets. Never miss a birthday, anniversary, or bill payment again.

**Highlights:** Countdown/count up to 10,000 years, Support for various widgets, Customizable event categories, Lunar calendar support, Pin important dates to the top, Passcode protection

**Features:** macOS Compatibility, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Days Matter Air Pro | $1.99 | one-time |
| 咖啡 | $2.99 | one-time |
| 银币 | $5.99 | one-time |
| 金币 | $14.99 | one-time |

**What reviewers like**

- 💻 Convenient and easy to use
- 🎨 Beautiful and intuitive interface
- ⏱️ Helpful countdown and reminders
- 🗓️ Customizable event backgrounds
- 📆 Tracks important dates well

**What reviewers complain about**

- 🌐 Some Chinese language elements
- 🔔 Inconsistent notification behavior
- 🔍 Lack of search functionality
- ⌚ Limited Apple Watch integration
- 🔒 Sync issues with iCloud/Apple Watch

**Reported bugs**

- Occasional app crashes
- Widget disappearing from Notification Center
- Incompatibility with newer iOS versions

**Requested features**

- Add note/description field for events
- Provide more language options
- Improve Apple Watch app functionality
- Implement backup and restore options
- Add sorting/filtering for event lists


### KeepProof

[App page](https://appshunter.io/ios/app/keepproof/id6786592216)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KeepProof Pro Monthly | $1.99 | per month |
| KeepProof Pro Yearly | $14.99 | per year |
| KeepProof Pro (Lifetime) | $29.99 | one-time |


## Frequently asked questions

### Is Days Matter Air free?

Days Matter Air is free to download, with in-app purchases available.

### Is KeepProof free?

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

### Do Days Matter Air or KeepProof have ads?

Neither Days Matter Air nor KeepProof shows ads.

### Which is updated more often, Days Matter Air or KeepProof?

Days Matter Air ships an update every 2 months, and KeepProof every 3 weeks. Most recently, Days Matter Air was updated on October 29, 2026 and KeepProof on October 24, 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.*