# 火花Memo vs One Earthling

The clearest difference is in-app purchases: 火花Memo at none against One Earthling's 3. 火花Memo also leads on iOS requirement (15.1 vs 18.0). One Earthling's advantage is update cadence (every 3 days vs every 8 days). On price, ads and device support there is nothing between them.

Both are free to download. One Earthling sells 3 in-app purchases, starting at $0.99 per month. 火花Memo asks for nothing beyond the download.

火花Memo ships an update every 8 days, One Earthling every 3 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 火花Memo | One Earthling |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 3 days** |
| Monetization | Free | — |
| Size | 132 MB | 52 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Chong Qing Code Loop Tech Technology Co., Ltd.](https://appshunter.io/developer/1721515299) | [杰强 葛](https://appshunter.io/developer/6790356313) |

## What reviewers say

### 火花Memo

[App page](https://appshunter.io/ios/app/memo/id6789061729)

Engage in daily sweet tasks with your loved one, accumulating "love sparks" to make your time together more meaningful and fun. Explore couple quizzes,默契 challenges, and shared moments to deepen your connection and create lasting memories.

**Highlights:** Daily couple tasks, Customizable couple quizzes, 默契 challenges, Share daily moments, Drawing challenges, Shared mood diary, Instant messaging

**Features:** macOS Compatibility

**In-app purchases:** none


### One Earthling

[App page](https://appshunter.io/ios/app/one-earthling/id6811782342)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Membership | $0.99 | per month |
| Annual Membership | $5.99 | per year |
| Lifetime Membership | $14.99 | one-time |


## Frequently asked questions

### Is 火花Memo free?

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

### Is One Earthling free?

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

### Do 火花Memo or One Earthling have ads?

Neither 火花Memo nor One Earthling shows ads.

### Which is updated more often, 火花Memo or One Earthling?

火花Memo ships an update every 8 days, and One Earthling every 3 days. Most recently, 火花Memo was updated on November 8, 2026 and One Earthling 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.*