# Sundialbum vs Forerunner

The clearest difference is update cadence: Forerunner at every 3 days against Sundialbum's every 3 weeks. Sundialbum's advantage is iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sundialbum sells 3 in-app purchases, starting at $0.99 per month and Forerunner sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Sundialbum ships an update every 3 weeks, Forerunner every 3 days. The most recent releases landed on October 28, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Sundialbum | Forerunner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/forerunner-running-tracker/id6745802851/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 55 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [虹 刘](https://appshunter.io/developer/1785084379) | [Forerunner](https://appshunter.io/developer/1813997430) |

## What reviewers say

### Sundialbum

[App page](https://appshunter.io/ios/app/sundialbum-emo-media-diary/id6739420041)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 按月订阅 | $0.99 | per month |
| 按年订阅 | $6.99 | per year |
| 终身订阅 | $24.99 | one-time |


### Forerunner

[App page](https://appshunter.io/ios/app/forerunner-running-tracker/id6745802851)

This app helps runners improve performance with VDOT analysis and condition management. Track progress, adjust training, and monitor fatigue to prevent injuries and run smarter. It offers customizable data analysis and home screen widgets for easy access to your running records.

**Highlights:** VDOT-based precision analysis, Customizable periodic analysis, Fatigue & condition monitoring, Home screen widgets, Full VoiceOver support

**Features:** Apple Watch app

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Monthly | $9.99 | per month |
| Yearly | $29.99 | per year |
| Lifetime | $49.99 | one-time |
| Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Sundialbum free?

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

### Is Forerunner free?

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

### Do Sundialbum or Forerunner have ads?

Neither Sundialbum nor Forerunner shows ads.

### Which is updated more often, Sundialbum or Forerunner?

Sundialbum ships an update every 3 weeks, and Forerunner every 3 days. Most recently, Sundialbum was updated on October 28, 2026 and Forerunner on October 30, 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.*