# TIMECHAIN CALENDAR vs 21 Pulse

The clearest difference is rating: TIMECHAIN CALENDAR at 5.0 against 21 Pulse's 3.3. TIMECHAIN CALENDAR also leads on update cadence (weekly vs every 2 weeks) and ratings volume (16 vs 3). 21 Pulse's advantage is in-app purchases (none vs 2). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. TIMECHAIN CALENDAR sells 2 in-app purchases, starting at $2.99 per month. 21 Pulse asks for nothing beyond the download.

TIMECHAIN CALENDAR holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: TIMECHAIN CALENDAR has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

TIMECHAIN CALENDAR ships an update weekly, 21 Pulse every 2 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | TIMECHAIN CALENDAR | 21 Pulse |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (16 ratings)](https://appshunter.io/ios/app/timechain-calendar/id6749210824/reviews)** | [3.3 (3 ratings)](https://appshunter.io/ios/app/21-pulse/id6757953169/reviews) |
| Number of ratings | **16** | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Freemium | **Free** |
| Size | 34 MB | 6 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Timechain Calendar LLC](https://appshunter.io/developer/1829307598) | [Heiko Mattern](https://appshunter.io/developer/1869902214) |

## What reviewers say

### TIMECHAIN CALENDAR

[App page](https://appshunter.io/ios/app/timechain-calendar/id6749210824)

Visualize the Bitcoin network with this protocol explorer and live data dashboard. Search past blocks, estimate future ones, and enhance your experience with subscriber-only mobile tools like a special moment camera and customizable alerts.

**Highlights:** Bitcoin protocol visualization, Timechain block search, Future block estimation, Block and price data camera overlays, Customizable alerts, Home and lock screen widgets

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Yearly Subscription | $29.99 | per year |


### 21 Pulse

[App page](https://appshunter.io/ios/app/21-pulse/id6757953169)

This Bitcoin-focused app provides real-time price tracking, market sentiment indicators, and a map of merchants accepting Bitcoin. It also offers educational resources, a portfolio tracker, and various tools for enthusiasts and merchants.

**Highlights:** Real-time Bitcoin price and charts, Fear & Greed Index and on-chain stats, Bitcoin merchant locator (Lightning SatMap), Educational resources on Bitcoin, Portfolio tracker with DCA plans, Home screen widget for live price

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

**In-app purchases:** none


## Frequently asked questions

### Is TIMECHAIN CALENDAR free?

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

### Is 21 Pulse free?

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

### Which has better reviews, TIMECHAIN CALENDAR or 21 Pulse?

TIMECHAIN CALENDAR is rated higher. TIMECHAIN CALENDAR averages 5.0 out of 5 from 16 ratings, while 21 Pulse averages 3.3 from 3 ratings.

### Do TIMECHAIN CALENDAR or 21 Pulse have ads?

Neither TIMECHAIN CALENDAR nor 21 Pulse shows ads.

### Which is updated more often, TIMECHAIN CALENDAR or 21 Pulse?

TIMECHAIN CALENDAR ships an update weekly, and 21 Pulse every 2 weeks. Most recently, TIMECHAIN CALENDAR was updated on November 5, 2026 and 21 Pulse on October 31, 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.*