# 火星教练 vs Penny

The clearest difference is in-app purchases: 火星教练 at none against Penny's 1. 火星教练 also leads on iOS requirement (9.0 vs 17.0). Penny's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Penny sells 1 one-off in-app purchase. 火星教练 asks for nothing beyond the download.

火星教练 ships an update every 3 weeks, Penny every 3 days. The most recent releases landed on September 6, 2026 and June 9, 2026 respectively.

## The numbers

| Metric | 火星教练 | Penny |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/penny-simple-expense-tracker/id6760332242/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 21 MB | 10 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [苏州卡炊宁网络科技有限公司](https://appshunter.io/developer/1381332440) | [晓丰 张](https://appshunter.io/developer/1877015444) |

## What reviewers say

### 火星教练

[App page](https://appshunter.io/ios/app/id1270142410)

**In-app purchases:** none


### Penny

[App page](https://appshunter.io/ios/app/penny-simple-expense-tracker/id6760332242)

This minimal expense tracker helps you quickly record income and expenses, organize transactions by category, and review monthly spending trends. Understand where your money goes with clear summaries and budget progress reminders.

**Highlights:** Quickly record income and expenses, Organize transactions by category, Review monthly spending trends, Track budget progress, Category insights, Data export

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Penny Pro | $1.99 | one-time |


## Frequently asked questions

### Is 火星教练 free?

火星教练 is free to download, with no in-app purchases.

### Is Penny free?

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

### Do 火星教练 or Penny have ads?

Neither 火星教练 nor Penny shows ads.

### Which is updated more often, 火星教练 or Penny?

火星教练 ships an update every 3 weeks, and Penny every 3 days. Most recently, 火星教练 was updated on September 6, 2026 and Penny on June 9, 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.*