# BM DIAG vs TradeFlex

The clearest difference is in-app purchases: BM DIAG at none against TradeFlex's 3. TradeFlex's advantage is update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. TradeFlex sells 3 in-app purchases, starting at $1.99 per month. BM DIAG asks for nothing beyond the download.

BM DIAG ships an update every 2 months, TradeFlex every 2 days. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | BM DIAG | TradeFlex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tradeflex/id6751715293/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | — | Freemium |
| Size | 396 MB | 33 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [Woyou Intelligent Technology(Shenzhen) Co., Ltd.](https://appshunter.io/developer/1788255603) | [ZONGKUN YU](https://appshunter.io/developer/1836392911) |

## What reviewers say

### BM DIAG

[App page](https://appshunter.io/ios/app/bm-diag/id6740069707)

**Features:** macOS Compatibility

**In-app purchases:** none


### TradeFlex

[App page](https://appshunter.io/ios/app/tradeflex/id6751715293)

This app is a professional trading journal and portfolio management tool. It allows users to record, organize, and analyze trades across various markets and currencies. Features include custom fee rules, dividend tracking, and cash flow management, all stored locally for privacy.

**Highlights:** Multiple independent portfolios, Fast trade logging with automatic calculations, Customizable commission models, Dividend and cost basis tracking, Support for complex trades and short selling, Strategy tagging and P/L analysis, Local data storage for privacy

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $19.99 | per year |
| Lifetime | $34.99 | one-time |


## Frequently asked questions

### Is BM DIAG free?

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

### Is TradeFlex free?

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

### Do BM DIAG or TradeFlex have ads?

Neither BM DIAG nor TradeFlex shows ads.

### Which is updated more often, BM DIAG or TradeFlex?

BM DIAG ships an update every 2 months, and TradeFlex every 2 days. Most recently, BM DIAG was updated on October 7, 2026 and TradeFlex on October 24, 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.*