# PowerBoost vs DayMark

The clearest difference is update cadence: DayMark at every 3 weeks against PowerBoost's every 2 months. On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. PowerBoost sells 1 one-off in-app purchase and DayMark sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

PowerBoost ships an update every 2 months, DayMark every 3 weeks. The most recent releases landed on October 9, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PowerBoost | DayMark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/daymark-countdown-days/id6782615760/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 28 MB | 65 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Duc Lai](https://appshunter.io/developer/1763002953) | [ELTEGANI MOHAMED](https://appshunter.io/developer/1872703964) |

## What reviewers say

### PowerBoost

[App page](https://appshunter.io/ios/app/powerboost-battery-saver-pro/id6547845173)

Extend your device's battery life and enhance performance with smart optimization tools. Monitor battery health, manage power consumption, and identify high-drain apps for a smoother, longer-lasting experience. Enjoy advanced diagnostics and custom power modes.

**Highlights:** Extend battery life, Accelerate performance, Monitor battery health, Smart battery saver, App usage tracker, Custom power modes, Advanced diagnostics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Power Boost Pro: Premium | $4.99 | one-time |


### DayMark

[App page](https://appshunter.io/ios/app/daymark-countdown-days/id6782615760)

This app helps you anticipate and enjoy important upcoming events by providing clear countdowns and gentle reminders. Organize your dates by category and visualize your progress towards each milestone. Unlock advanced features like unlimited tracking and home screen widgets with a Pro subscription.

**Highlights:** Countdown to any date, Count up from any date, Organize events by category, Gentle reminders, Progress bar and percentage, Widgets for home and lock screen, Milestones and notes per event

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Annual Subscription | $14.99 | per year |
| Lifetime Subscription | $24.99 | one-time |


## Frequently asked questions

### Is PowerBoost free?

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

### Is DayMark free?

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

### Do PowerBoost or DayMark have ads?

Neither PowerBoost nor DayMark shows ads.

### Which is updated more often, PowerBoost or DayMark?

PowerBoost ships an update every 2 months, and DayMark every 3 weeks. Most recently, PowerBoost was updated on October 9, 2026 and DayMark on October 25, 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.*