# 时间痕迹 vs SubSum

The clearest difference is in-app purchases: SubSum at none against 时间痕迹's 1. 时间痕迹's advantage is update cadence (every 9 days vs every 4 months) and iOS requirement (14.0 vs 17). On price, ads and device support there is nothing between them.

Both are free to download. 时间痕迹 sells 1 one-off in-app purchase. SubSum asks for nothing beyond the download.

时间痕迹 ships an update every 9 days, SubSum every 4 months. The most recent releases landed on October 17, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | 时间痕迹 | SubSum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/id6474723208/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 30 MB | 2 MB |
| Requires iOS | **14.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [德勇 谢](https://appshunter.io/developer/1714484090) | [桥 汪](https://appshunter.io/developer/1658027527) |

## What reviewers say

### 时间痕迹

[App page](https://appshunter.io/ios/app/id6474723208)

A minimalist life logging tool that records your time allocation with a single tap. Visualize your daily activities on a timeline and review weekly or monthly time spent on tasks. Customize your experience with personalized colors and icons.

**Highlights:** One-tap time logging, Daily timeline visualization, Weekly/monthly time statistics, Customizable card colors, Customizable icons

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Membership | $0.99 | one-time |


### SubSum

[App page](https://appshunter.io/ios/app/subsum/id6754885566)

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

**In-app purchases:** none


## Frequently asked questions

### Is 时间痕迹 free?

时间痕迹 is free to download, with in-app purchases available.

### Is SubSum free?

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

### Do 时间痕迹 or SubSum have ads?

Neither 时间痕迹 nor SubSum shows ads.

### Which is updated more often, 时间痕迹 or SubSum?

时间痕迹 ships an update every 9 days, and SubSum every 4 months. Most recently, 时间痕迹 was updated on October 17, 2026 and SubSum on October 12, 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.*