# Challenges Alarm Clock vs mod.Reminder

The clearest difference is ads: mod.Reminder at none against Challenges Alarm Clock's shown. mod.Reminder also leads on update cadence (every 10 days vs monthly) and iOS requirement (18.5 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Challenges Alarm Clock sells 3 in-app purchases, starting at $2.99 per month and mod.Reminder sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Challenges Alarm Clock ships an update monthly, mod.Reminder every 10 days. The most recent releases landed on October 15, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Challenges Alarm Clock | mod.Reminder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (2.3K ratings)](https://appshunter.io/ios/app/challenges-alarm-clock/id1247289889/reviews)** | — |
| Number of ratings | **2.3K** | — |
| Positive reviews | 26.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | Subscription | — |
| Size | 44 MB | 8 MB |
| Requires iOS | 26.0 | **18.5** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [duytu tran](https://appshunter.io/developer/1244491336) | [SATOSHI NAGASAKA](https://appshunter.io/developer/1826446450) |

## What reviewers say

### Challenges Alarm Clock

[App page](https://appshunter.io/ios/app/challenges-alarm-clock/id1247289889)

This alarm clock uses challenging games to ensure you wake up on time. It eliminates snooze and offers bedtime reminders with a clean interface. Turn your mornings into a game and never oversleep again.

**Highlights:** Unstoppable alarm with challenge games, No snooze or stop button, Bedtime reminder notifications, Clean and modern interface, Math, Maze, Shake, Remember Number, Lucky 777 games

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 month | $2.99 | per month |
| Premium 1 year | $9.99 | per year |
| Lifetime Premium | $19.99 | one-time |

**What reviewers like**

- ⭐ Good app that wakes up user
- 🔔 Alarm is effective at waking up heavy sleepers
- 🧠 Challenges help get brain working in the morning

**What reviewers complain about**

- 🚫 Ads make the app unusable
- 🔇 Alarm doesn't make any sound, only vibrates
- 🤯 Challenges are too difficult or confusing
- ⏰ Alarm turns off on its own without completing challenges

**Reported bugs**

- Alarm doesn't go off at scheduled time
- App crashes when trying to set alarm
- Notifications and messages are glitchy or inappropriate

**Requested features**

- More customizable alarm sounds and challenges
- Option to choose specific challenge type
- Ability to set own custom challenges


### mod.Reminder

[App page](https://appshunter.io/ios/app/modreminder/id6748593483)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| mod.Reminder - Full Version | $2.99 | one-time |


## Frequently asked questions

### Is Challenges Alarm Clock free?

Challenges Alarm Clock is free to download, with in-app purchases available.

### Is mod.Reminder free?

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

### Do Challenges Alarm Clock or mod.Reminder have ads?

Challenges Alarm Clock shows ads; mod.Reminder does not.

### Which is updated more often, Challenges Alarm Clock or mod.Reminder?

Challenges Alarm Clock ships an update monthly, and mod.Reminder every 10 days. Most recently, Challenges Alarm Clock was updated on October 15, 2026 and mod.Reminder on October 8, 2026.

---

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